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One of the slowest events on Earth that can change the shape of the land is erosion.
What does the term erosion mean? Example: The erosion of the beach left many homes at risk for collapse. The sand is still sliding and moving closer to the ocean.
Erosion is an event that happens daily on Earth, but it happens very slowly. Erosion is the movement of the broken down materials from weathering. The dirt, plant matter, rocks, and other materials are moved to a new location, and new landforms are created while others are destroyed or changed.
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The Grand Canyon is one of the United State’s best examples of erosion. Wind, rain, and the Colorado River slowly created it. These forces cut and shaped the area into what it is today. The Appalachian Mountains were a towering mountain range millions of years ago. Today their highest point is 6,684 feet tall. That same peak used to be an estimated 20,000 feet high. Erosion over time has worn the mountains down and changed them forever.
Which keywords or phrases from this text show that these events happened slowly?
Erosion is an extremely slow process, but the results are extraordinary. The clues in the text that let readers know this is a slow-moving process is "slowly," "were a towering mountain range millions of years ago," "erosion over time," and "used to be." These words and phrases all hint to something taking a long time to happen. Some processes on earth happen quickly, but not erosion!
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Which photo shows an Earth event that happens slowly (in months or years)?
The photo that shows a slowly occurring Earth event would be the cliffsides of a beach. These have been worn away over many years (millions) as the dirt, sand, and rocks eroded. Lightning strikes, tropical storms, and wildfires are all quickly occurring events.
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Why is this photo an example of an event on Earth that happens slowly?
The provided photo depicts a stream or river racing through a carved out section of a canyon. This process is called weathering and erosion and takes millions of years to happen. The river beating into the sides of the canyon breaks apart small pieces of rock and sand, and the water pushes it downstream. The results are a carved section with deposits of debris downstream.
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What is the definition of weathering? Example: Weathering is an important factor in the creation of new landforms.
Weathering is the process of breaking down or wearing down the Earth with wind or water. As rivers move through areas banks and canyons are formed. Wind and rain beat on the cliffsides and cause pieces to break away. These are examples of the slow-moving process of weathering.
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The Grand Canyon is one of the United State’s best examples of erosion. Wind, rain, and the Colorado River slowly created it. These forces cut and shaped the area into what it is today. The Appalachian Mountains were a towering mountain range millions of years ago. Today their highest point is 6,684 feet tall. That same peak used to be an estimated 20,000 feet high. Erosion over time has worn the mountains down and changed them forever.
What conclusion can the reader make about the formation of mountains?
Erosion is a prolonged process, but the results are extraordinary. The clues in the text that let readers know this is a slow-moving process is "slowly," "were a towering mountain range millions of years ago," "erosion over time," and "used to be." These words and phrases all hint to something taking a long time to happen. Some processes on Earth happen quickly, but not erosion!
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California had two significant events that took place today that shook residents up. The first was a sudden wildfire that struck the forested area outside of Los Angeles and terrified residents! It didn't rage for very long before firefighters put it out. A flick of a match is all it takes to start a massive fire. There were no injuries or deaths, luckily. The other event was a slippery mess. Northern California had been experiencing heavy rains for days, and because of years of erosion to cliffsides and roads, a terrible mudslide began. It is still ongoing, and there is no real way to stop it, it has to run its course. Unfortunately, when land is broken down over time, it becomes more dangerous in the case of prolonged rainstorms.
What are the keywords/phrases in this text that allude to an event that happens slowly?
In the passage given, the event that happened slowly was the mudslide. Events on Earth can happen at different speeds. The wildfire is described as "sudden," "didn't rage for long," and "a flick of a match" can start them. This is all language that shows how quickly the fire started. The mudslide, on the other hand, is described as happening after "heavy rain for days," and that "years of erosion" led to the right conditions. The text also states that the mudslide is "still ongoing" and that "when land is broken down over time," conditions become more dangerous. This demonstrates an event that takes a long time or happens slowly.
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Why is this photo an example of an event on Earth that happens slowly?
Cliffsides are formed over thousands, if not millions of years of weathering and erosion. Waves, wind, rain, and possible vegetation and ice wear away the rock and break it over the years. Water and wind carry the broken pieces away to new places. This is a very slow-moving process.
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Tsunamis are severe oceanic storms that cause extreme devastation. They are a series of waves that can be miles long, up to 100 feet high, and can travel at 400 miles per hour. They are caused by significant and sudden disturbances of the sea’s surface. Volcanic eruptions, landslides, earthquakes can trigger a tsunami. A massive wall of water will wash ashore, and there is very little time or warning for those who live in the communities nearby. The series of waves can last for hours, and massive flooding adds to the problem. If you find yourself in a tsunami, get to high ground, keep calm, do not drive, and follow instructions from local officials.
What words/phrases let readers know these are events that do NOT happen slowly?
Volcanic eruptions, landslides, earthquakes, and tsunamis are all events that happen quickly. Events that occur slowly are weathering and erosion, creating new landforms. The keywords that let readers know this event does NOT occur slowly are "sudden" and "very little time or warning."
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Erosion happens very slowly over time. It is the movement of broken rocks, dirt, and sediment caused by weathering. Which answer choice gives an example of erosion?
Erosion is the movement of broken materials, and only once answer choice mentions moving the pieces, "A river carrying broken rocks downstream." This example shows that water in the form of a river is moving the broken parts of the material. The other examples are weathering, which is the process of breaking the materials.
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