Card 0 of 20
"Jupiter's Moons" by Brooke Petruzzelli (2013)
The planet Jupiter has many moons. The most well known moons are the four biggest moons. The Italian astronomer, Galileo Galilei, discovered these four moons in 1610. They are named Europa, Ganymede, Callisto, and lo. The biggest of these four moons is Ganymede with a diameter of 5,262.4 km. In fact, if Ganymede were not bound to Jupiter, it would be considered a planet in its own right. Callisto is almost an exact twin of the planet Mercury, Europa is very smooth, and lo is has many active volcanoes. Although there are 57 moons that have been discovered around Jupiter, these four are the most well known.
What is the main idea of this passage?
Since this passage is mostly about the four biggest moons of Jupiter, this is considered the main idea. There are many specific details about the moons, but they are all related to the main idea: Jupiter has four big moons.
Compare your answer with the correct one above
Baseball is a great game. It’s one of my favorite pastimes. It’s a great way to spend a lazy summer afternoon. I love going to watch the nine inning game played on a beautifully mowed lawn, listening to the Umpire yell “STRIKE,” singing “Take Me Out to the Ballgame” during the seventh-inning stretch, and I especially love the sound of the bat going "crack!!" when it hits the ball. Baseball is definitely my favorite sport.
What is the main idea of this passage?
Since the passage is all about her love of baseball, this is the main idea.
Compare your answer with the correct one above
Keeping Gusland Amusement Park clean is no small task. Workers use 900 brooms, 90 dust pans and 800 mops a year to keep the park looking its best. Workers collect approximately 12 tons of trash during a busy day—about 8.7 million pounds annually, but not all of the refuse collected in the park goes to the landfill. Every year, Gusland Park recycles approximately 3.1 million pounds of cardboard; 1.1 million pounds of green waste; 270,000 pounds of office paper; 331,260 pounds of glass bottles; 270,280 pounds of plastic bottles; and 14,240 pounds of aluminum cans. The streets of Gusland are washed and steam-cleaned after closing each day. Keeping Gusland looking clean takes teamwork and a lot of hard work!
What is the main idea of this passage?
Since all of the information in this passage relates to keeping Gusland clean, you can say that the main idea is that "It takes a lot of hard work to keep Gusland Park clean."
You can also look at the topic sentence (Keeping Gusland Park clean is no small task.) and the concluding sentence (Keeping Gusland looking clean takes teamwork and hard work!) of the passage to give you clues. They are very similar and both sentences describe the hard work it takes to keep Gusland clean.
Compare your answer with the correct one above
Adapted from A Child’s History of England by Charles Dickens (1905)
King Henry the Seventh did not turn out to be as fine a man as the nobility and people hoped, in the first joy of their parting from Richard the Third. He was very cold, crafty, and calculating, and would do almost anything for money. He possessed considerable ability, but his chief merit appears to have been that he was not cruel when there was nothing to be gained by being so.
Which of these is not a negative quality attributed to King Henry the Seventh?
The author describes how King Henry is “cold, crafty and calculating, and would do almost anything for money.” The only negative quality not mentioned is his cruelty. Rather, the author says that his lack of cruelty is a positive quality.
Compare your answer with the correct one above
Adapted from The Great Round World and What Is Going On In It, Vol. 2., No. 24 (June, 1898)
There is a very interesting account of the origin of the Red Cross Society. About forty years ago, M. Henry Dimont, a native of Switzerland, having witnessed the unnecessary suffering of the wounded, from lack of care, at the battle of Solferino, published a book, pointing out the necessity of forming a group of nurses to work in the cause of humanity in time of war, regardless of nationality of the injured, and who should be permitted to aid the wounded on the battle-field, under the protection of a flag which should be recognized as neutral. So much interest was taken in the idea that the outcome was a convention held at Geneva in 1864, which was attended by representatives from sixteen of the great nations of the world, who signed an agreement that they would protect members of the association when caring for the wounded on the field of battle. It was decided that the work of the Red Cross Society should not be confined to times of war, but that in case of disasters and calamities the organization was to provide aid. During the past seventeen years the American Red Cross Society has served in fifteen disasters and famines, and Russians, Armenians, and Cubans have all received aid from this society.
Why was the Red Cross Society created?
The purpose of the Red Cross Society was “of forming a group of nurses to work in the cause of humanity in time of war, regardless of nationality of the injured.” Although there is some mention of the Red Cross expanding to provide food and water, it is not the reason that the Society was created.
Compare your answer with the correct one above
Adapted from "Marvels of Men’s Making" in Chatterbox Periodical edited by J. Erskine Clark (1906)
When two large cities stand opposite to one another on the banks of a river, it is not likely they can do very well without a bridge to connect them. Yet the citizens of New York and Brooklyn were obliged to manage as best they could for a good many years before they had their bridge. There were many difficulties in the way. For one thing, the river is very broad; for another, the tall-masted ships ply up and down so frequently that it would never do to build anything which would obstruct their passage; and to overcome these difficulties would mean the expenditure of a vast sum of money. But the folk who earned their daily bread in New York and lived in Brooklyn grew thoroughly tired of spending chilly hours in foggy weather on the river-side piers, waiting for the ferry-boat to come and take them across, and at last they began an agitation which resulted in the Brooklyn Bridge.
Why do the people of Brooklyn start demanding that a bridge be built?
The author tells us that the people of Brooklyn began to demand a bridge because they “grew thoroughly tired of spending chilly hours in foggy weather on the river-side piers, waiting for the ferry-boat to come and take them across, and at last they began an agitation which resulted in the Brooklyn Bridge.” None of the other answer choices are either directly or indirectly mentioned.
Compare your answer with the correct one above
Adapted from Early European History by Hutton Webster (1917)
The Phoenicians were a Syrian people whose country was a narrow stretch of coast, about one hundred and twenty miles in length, seldom more than twelve miles in width, between the Lebanon Mountains and the sea. This tiny land could not support a large population. As the Phoenicians increased in numbers, they were obliged to betake themselves to the sea. The Lebanon cedars furnished soft, white wood for shipbuilding, and the deeply indented coast offered excellent harbors. Thus, the Phoenicians became preeminent sailors. Their great cities, Sidon and Tyre, established colonies throughout the Mediterranean and had an extensive commerce with every region of the known world.
Why could the Phoenician land not support a large population?
The author states that the reason why the Phoenician land could not support a large population is because “their country was a narrow stretch of coast, about one hundred and twenty miles in length, seldom more than twelve miles in width, between the Lebanon Mountains and the sea. This tiny land could not support a large population.”
Compare your answer with the correct one above
Adapted from Early European History by Hutton Webster (1917)
The Phoenicians were a Syrian people whose country was a narrow stretch of coast, about one hundred and twenty miles in length, seldom more than twelve miles in width, between the Lebanon Mountains and the sea. This tiny land could not support a large population. As the Phoenicians increased in numbers, they were obliged to betake themselves to the sea. The Lebanon cedars furnished soft, white wood for shipbuilding, and the deeply indented coast offered excellent harbors. Thus, the Phoenicians became preeminent sailors. Their great cities, Sidon and Tyre, established colonies throughout the Mediterranean and had an extensive commerce with every region of the known world.
Which of these is NOT one of the reasons why the Phoenicians became "preeminent sailors"?
The author talks about how the Phoenicians lived in a small, coastal country, so when their population grew too large, they took to the sea. The author also mentions the availability of Lebanese wood to help build ships and the perfect design of the coastline for constructing natural harbors. All of the answer choices played a part in making the Phoenicians "preeminent sailors."
Compare your answer with the correct one above
Adapted from Early European History (1917) by Hutton Webster
A medieval village usually contained several classes of laborers. There might be a number of freemen, who paid a fixed rent, either in money or produce, for the use of their land. Then there might also be a few slaves in the lord's household or at work on his domain. By this time, however, slavery had about died out in Western Europe. Most of the peasants were serfs.
Serfdom represented a stage between slavery and freedom. A slave belonged to his master; he was bought and sold like other belongings. A serf had a higher position, for he could not be sold apart from the land nor could his holding be taken from him. He was fixed to the soil. On the other hand, a serf ranked lower than a freeman, because he could not change his house, nor marry outside the manor, nor hand down his goods, without the permission of his lord.
Which of these accurately states the hierarchy between serfs, slaves, and freemen in Medieval Europe?
The author discusses how freemen are former slaves who have been granted freedom. He goes on to list the various things that freemen can do that serfs cannot; this suggests that freemen have more independence than serfs. Likewise, serfs are not directly property in the way that slaves are, which suggests serfs have more independence than slaves. The correct answer is therefore “Serfs are freer than slaves, but less free than freemen.” This is confirmed by the author when he says, “Serfdom represented a stage between slavery and freedom.”
Compare your answer with the correct one above
Adapted from The Boy Heroes of Crecy and Poitiers by Treadwell Walden (1879)
There was only one road to success or fame in those days, and that was the profession of fighting. The ambition of every high-born young fellow was to become a knight. Knighthood was something that both king and nobles regarded as higher in some respects than even the royalty or nobility to which they were born. No one could be admitted into an order of the great brotherhood of knights, which extended all over Europe and formed an independent society, unless he had gone through severe discipline, and had performed some distinguished deed of valor. Then he could wear the golden spurs; for knighthood had its earliest origin in the distinction of fighting on horseback, while ordinary soldiers fought on foot. Although knighthood changed afterward, the word "chivalry" always expressed it, from the French word cheval, a horse. And in addition to valor, which was the result of physical strength and courage, the knight was expected to be generous, courteous, faithful, devout, truthful, high-souled, high-principled. Hence the epithet, "chivalrous," which, even today, is so often heard applied to men of especially fine spirit. "Honor" was the great word which included all these qualities then, as it does in some measure now.
Why did some of the kings and nobles regard knighthood higher than royalty?
The author tells us that many nobles regarded knighthood as higher than royalty because “No one could be admitted into an order of the great brotherhood of knights, which extended all over Europe and formed an independent society, unless he had gone through severe discipline, and had performed some distinguished deed of valor.” Basically, if you wanted to be a knight, you had to earn it, whereas people were often born into royal families and didn't have to earn royal status.
Compare your answer with the correct one above
Adapted from A Man Who Coveted Washington’s Shoes by Frank E. Stockton (1896)
The person whose story we are now about to tell was not a Jerseyman, but, as most of the incidents which make him interesting to us occurred in this state, we will give him the benefit of a few years' residence here.
This was General Charles Lee, who might well have been called a soldier of fortune. He was born in England, but the British Isles were entirely too small to satisfy his wild ambitions and his bold spirit. There are few heroes of romance who have had such a wide and varied experience, and who have engaged in so many strange enterprises. He was a brave man and very able, but he had a fault which prevented him from being a high-class soldier: he could not bear authority and was always restive under command of another, and, while always ready to tell other people what they ought to do, was never willing to be told what he ought to do.
He joined the British army when he was a young man, and he first came to this country in 1757, when General Abercrombie brought over an army to fight the French. For three years, Lee was engaged in the wilds and forests, doing battle with the Native Americans and French, and no doubt he had all the adventures an ordinary person would desire, but this experience was far from satisfactory.
What is General Charles Lee’s primary fault, according to the author?
The author states that Lee had many positive traits, but one serious negative one: “He was a brave man and very able, but he had a fault which prevented him from being a high-class soldier: he could not bear authority and was always restive under command of another, and, while always ready to tell other people what they ought to do, was never willing to be told what he ought to do.” The author faults Lee for being disobedient and disrespectful towards authority.
Compare your answer with the correct one above
Adapted from Early European History by Hutton Webster (1917)
History cannot easily go back beyond written records. These alone will preserve a full and accurate account of man's achievements. Manuscripts and books form one class of written records. The old Babylonians used tablets of soft clay, on which signs were impressed with a metal instrument. The tablets were then baked hard in an oven. The Egyptians made a kind of paper out of the papyrus, a plant native to the Nile valley. The Greeks and Romans at first used papyrus, but later they employed the more lasting parchment prepared from sheepskin. Paper seems to have been a Chinese invention. It was introduced into Europe by the Arabs during the twelfth century of our era.
History, based on written records, begins in different countries at varying dates. A few manuscripts and inscriptions found in Egypt date back three or four thousand years before Christ. The annals of Babylonia are scarcely less ancient. Trustworthy records in China and India do not extend beyond 1000 B.C. For the Greeks and Romans the commencement of the historic period must be placed about 750 B.C. The inhabitants of northern Europe did not come into the light of history until about the opening of the Christian era.
What does the author think “alone will preserve a full and accurate account of man’s achievements"?
In context, the author states, “History cannot easily go back beyond written records. These alone will preserve a full and accurate account of man's achievements.” In this first sentence, he establishes that it is difficult to study a history without written records of what happened. In the second sentence, he says that as a result of this, written records will preserve the story of man’s achievements. To provide further help, “records” are stories or information about what has happened.
Compare your answer with the correct one above
"The Dangers of Sugar" by Daniel Morrison (2014)
Sugar is a highly addictive substance that plays a dangerous role in the health and well-being of people around the world. It is particularly threatening to American health, as it is placed in everything from carbonated sodas to beef jerky and vegetable juice. The average American consumes seventy-five pounds of sugar every year—that is roughly the weight of a elementary school child. Many health experts believe that sugar is the number one contributing factor in the high rates of obesity, heart disease, and diabetes that can be found in the contemporary United States.
Why does the author believe that sugar is “particularly threatening to American health”?
Answering this question first requires understanding what “particularly threatening” means. Something that is “threatening” looks like it could cause harm. When the author says “particularly,” he means that Americans are more threatened by sugar than people in other countries. The reason the author gives for this is that, in America, sugar “is placed in everything from carbonated sodas to beef jerky and vegetable juice.” So, you can say that sugar is “particularly threatening to American health” because “it is found in so many different products in the United States.”
Compare your answer with the correct one above
"The Dangers of Sugar" by Daniel Morrison (2014)
Sugar is a highly addictive substance that plays a dangerous role in the health and well-being of people around the world. It is particularly threatening to American health, as it is placed in everything from carbonated sodas to beef jerky and vegetable juice. The average American consumes seventy-five pounds of sugar every year—that is roughly the weight of a elementary school child. Many health experts believe that sugar is the number one contributing factor in the high rates of obesity, heart disease, and diabetes that can be found in the contemporary United States.
What is the author’s main point in this passage?
It is true that in the second paragraph the author talks about how too much sugar “is unhealthy” and he does seem to suggest that “the United States eats more sugar than any other country.” Both of these factor as parts of the author’s main point, which is “that sugar consumption is dangerously high in the United States.” This is shown by excerpts such as “The average American consumes seventy-five pounds of sugar every year - that is roughly the weight of a elementary school child.” And, “Many health experts believe that sugar is the number one contributing factor in the high rates of obesity, heart disease, and diabetes that can be found in the contemporary United States.”
Compare your answer with the correct one above
"Soccer" by Daniel Morrison (2014)
Soccer is considered by some Americans to be a European and Latin American sport. For numerous reasons, the sport has struggled to take hold professionally in the United States, but there is growing participation in the sport at the youth level. This can probably be attributed to the relative dangers faced by those playing soccer and those playing America’s traditional favorite youth sport—American football.
Young children who play American football are at high risk of several catastrophic injuries such as concussions, fractures and spinal damage. The universal concern among parents to protect the health of their children has lead many to encourage their child to take up soccer as opposed to American football. If this trend continues, which it almost certainly will as our society becomes more aware of the degree of damage done by repeated collisions in American football, it will not be long before the popularity of soccer spreads upwards to the professional level.
What is the main idea of this passage?
The main idea of this passage is that soccer is a relatively safe game for American children compared to American football. The author clearly believes that the growing emphasis of American parents to protect the health of their children means that soccer will continue to grow in popularity at the professional level. This argument is stated by the author when he says “it will not be long before the popularity of soccer spreads upwards to the professional level" at the end of the passage.
Compare your answer with the correct one above
Adapted from "America the Old World" by L. Agassiz in Wonders of Earth, Sea, and Sky (1902, ed. Edward Singleton Holden)
There is, perhaps, no part of the world where the early geological periods can be studied with so much ease and precision as in the United States. Along their northern borders, between Canada and the United States, there runs the low line of hills known as the Laurentian Hills. Insignificant in height, nowhere rising more than fifteen hundred or two thousand feet above the level of the sea, these are nevertheless some of the first mountains that broke the uniform level of the earth's surface and lifted themselves above the waters. Their low stature, as compared with that of other more lofty mountain ranges, is in accordance with an invariable rule, by which the relative age of mountains may be estimated. The oldest mountains are the lowest, while the younger and more recent ones tower above their elders, and are usually more torn and dislocated also. So it is known the Alps, Rockies, and Himalayas are considerably younger than the Appalachian mountains.
How do we know that the Appalachians are older than the Alps?
Answering this question requires understanding the main idea of the passage, namely that the taller a mountain range is, generally speaking, the younger it is. So if the Appalachians are not as tall as the Alps, then we know the Appalachians are older than the Alps.
Compare your answer with the correct one above
Adapted from The Story of Mankind by Hendrik Van Loon (1921)
Early in the tenth century a Viking by the name of Rollo had repeatedly attacked the coast of France. The king of France, too weak to resist these northern robbers, tried to bribe them into "being good." He offered them the province of Normandy, if they would promise to stop bothering the rest of his domains. Rollo accepted this bargain and became Duke of Normandy.
But his children remained interested in conquest. Across the channel, only a few hours away from the European mainland, they could see the white cliffs and the green fields of England. Poor England had passed through difficult days. For two hundred years it had been a Roman colony. After the Romans left, it had been conquered by the Angles and the Saxons, two German tribes from Schleswig. Next the Danes had taken the greater part of the country and had established the kingdom of Cnut. The Danes had been driven away and now (it was early in the eleventh century) another Saxon king, Edward the Confessor, was on the throne. But Edward was not expected to live long and he had no children. The circumstances favored the ambitious dukes of Normandy.
In 1066 Edward died. Immediately William of Normandy crossed the channel, defeated and killed Harold of Wessex (who had taken the crown) at the battle of Hastings, and proclaimed himself king of England.
In another story I have told you how in the year 800 a German chieftain had become a Roman Emperor. Now in the year 1066 the grandson of a Norse pirate was recognized as King of England. Why should we ever read fairy stories, when the truth of history is so much more interesting and entertaining?
The primary purpose of this essay is to __________.
The primary purpose of this essay is so that the author can show how fascinating and enjoyable history can be. The author reveals this purpose in the conclusion where he says “Why should we ever read fairy stories, when the truth of history is so much more interesting and entertaining?” Although much of the essay concerns itself with describing the fate of England, the rise of the Normans in England, and the life of William of Normandy, this story is merely used to illustrate why history can be so “interesting and entertaining.”
Compare your answer with the correct one above
Adapted from "Life Growth - Frogs" by Margaret Warner Morley in A Book of Natural History (1902, ed. David Starr Jordan)
Our common frogs, like many of the fishes, do not trouble themselves about the fate of their eggs after they are carefully laid in a safe place. They trust Mother Nature to see the little tadpoles safely through the perils of childhood, to help them avoid being eaten or starving, and cut, not their teeth, but their arms and legs.
In Venezuela, however, there dwells a frog with well developed maternal instinct. The mothers have pockets on their backs, not for their own convenience, but as cradles for their babies. The fathers put the fertilized eggs into the pockets of the mothers, and there they remain, well guarded, until the young are able to care for themselves.
How does the frog found in Venezuela differ from frogs generally found elsewhere?
In the first paragraph, the author talks about how “common frogs” generally do not worry about the fate of their eggs after they have been laid in a safe place. The author then contrasts this with the “maternal instincts” of a certain frog found in Venezuela. “Maternal” means motherly. So, this particular frog in Venezuela differs from other frogs in that it “protects its young after they are born.”
Compare your answer with the correct one above
Adapted from A Catechism of Familiar Things: Their History and the Events Which Led to Their Discovery by the Benziger Brothers (1881)
Iron is one of the most useful and abundant metals, being found in all mineral earths, stones, plants, and animal fluids. Iron is found in great masses, in various states, in the bowels of the earth; it is usually, however, compounded with stone, from which it is separated by the action of fire. In some parts of the world, whole mountains are formed of iron; among these may be mentioned the Pilot Knob and the Iron Mountain, in Missouri, being unsurpassed by anything of the kind found elsewhere.
It is hard, fusible, not very malleable, but extremely ductile, and very tenacious; it is of a greyish color, and nearly eight times heavier than water. Without iron, society could make no progress in the cultivation of the ground, in mechanical arts or trades, in architecture or navigation; it is therefore of the greatest use to man.
The primary argument of this essay is that __________.
The author is making two points in this essay. Firstly, he says that there is a large quantity of iron in the world. This can be seen in excerpts such as “Iron is found in great masses, in various states, in the bowels of the earth." Secondly, he says that this great quantity of iron is of great importance and benefit to mankind. This second point can be seen in statements such as “Without iron, society could make no progress" and "it is therefore of the greatest use to man.” The correct answer is therefore the one that reflects the author’s two main points and the relationship between the two—there is a lot of iron, and mankind needs iron, so it is important that there is a lot of iron.
Compare your answer with the correct one above
Adapted from "Sea-slugs and Cuttlefish" by Charles Darwin in A Book of Natural History (1902, ed. David Starr Jordan)
I was much interested, on several occasions, by watching the habits of a cuttlefish. Although common in the pools of water left by the retiring tide, these animals were not easily caught. By means of their long arms and suckers, they could drag their bodies into very narrow crevices; and when thus fixed, it required great force to remove them. At other times they darted, with the rapidity of an arrow, from one side of the pool to the other, at the same instant discoloring the water with a dark chestnut-brown ink. These animals also escape detection by a very extraordinary, chameleon-like power of changing their color. They appear to vary their tints according to the nature of the ground over which they pass: when in deep water, their general shade was brownish-purple, but when placed on the land, or in shallow water, this dark tint changed into one of a yellowish green.
This cuttlefish displayed its chameleon-like power both during the act of swimming and whilst remaining stationary at the bottom. I was amused by the various arts to escape detection used by one individual, which seemed fully aware that I was watching it. Remaining for a time motionless, it would then stealthily advance an inch or two, like a cat after a mouse; sometimes changing its color, it proceeded, till having gained a deeper part, it darted away, leaving a dusky train of ink to hide the hole into which it had crawled.
The main idea of this passage is that __________.
The main idea of this passage is that cuttlefish are very difficult to catch because they have many different skills that allow them to avoid capture. The author talks about their “chameleon-like power of changing their color,” their “long arms and suckers” with which “they could drag their bodies into very narrow crevices,” and their ability to dart “with the rapidity of an arrow, from one side of the pool to the other, at the same instant discoloring the water with a dark chestnut-brown ink.” The main thesis of the text is probably “Although common in the pools of water left by the retiring tide, these animals were not easily caught.” The other answer choices are common features of this text, but not the main idea of the passage.
Compare your answer with the correct one above