Physical Science - 3rd Grade Science
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Brad and Brian must separate a mixture prepared by their teacher. She asks them which items in the container could be removed by using a magnet and why. The things they have are toothpicks, sand, pebbles, marbles, iron filings, paper clips, chocolate chips, broken crayons, and bits of notebook paper.
Which items can they remove with a magnet, and why?
Brad and Brian must separate a mixture prepared by their teacher. She asks them which items in the container could be removed by using a magnet and why. The things they have are toothpicks, sand, pebbles, marbles, iron filings, paper clips, chocolate chips, broken crayons, and bits of notebook paper.
Which items can they remove with a magnet, and why?
Brad and Brian can use their scientific knowledge of magnets to determine which objects can be removed from the mixture. The items that can be removed have the quality of being magnetic. Bran and Brian can remove the iron filings and paperclips from the mix because they are both metal and magnetic. The other objects are made of materials that would not be attracted to the magnet.
Brad and Brian can use their scientific knowledge of magnets to determine which objects can be removed from the mixture. The items that can be removed have the quality of being magnetic. Bran and Brian can remove the iron filings and paperclips from the mix because they are both metal and magnetic. The other objects are made of materials that would not be attracted to the magnet.
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Drew has a metal toy car, and he has been asked to steer it through a maze, but he is not allowed to touch it at all. Which object could he select to move the car through the maze without touching it?
Drew has a metal toy car, and he has been asked to steer it through a maze, but he is not allowed to touch it at all. Which object could he select to move the car through the maze without touching it?
This problem can be solved, but it is tricky! Not touching the car is the hardest part because everyone is used to steering them with their hands. Drew could use a magnet to solve this problem because magnets do not need to touch to attract other magnetic items. He could hold the magnet above the car and steer it through the maze.
This problem can be solved, but it is tricky! Not touching the car is the hardest part because everyone is used to steering them with their hands. Drew could use a magnet to solve this problem because magnets do not need to touch to attract other magnetic items. He could hold the magnet above the car and steer it through the maze.
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Which item relies on magnetism to solve problems for hikers?
Which item relies on magnetism to solve problems for hikers?
These are all items that hikers use, and they solve problems for them while they are out in the woods. The only thing that relies on magnets though, is the compass. A water bottle, hiking boots, and a map are all helpful but do not rely on magnets. A compass works because the magnet responds to Earth's magnetic field. Earth is like a giant magnet that creates a magnetic field. The north end of a compass is drawn to align with Earth's magnetic North Pole. While the hikers move through the woods, the compass' needle moves towards the North end of to help them find their way.
These are all items that hikers use, and they solve problems for them while they are out in the woods. The only thing that relies on magnets though, is the compass. A water bottle, hiking boots, and a map are all helpful but do not rely on magnets. A compass works because the magnet responds to Earth's magnetic field. Earth is like a giant magnet that creates a magnetic field. The north end of a compass is drawn to align with Earth's magnetic North Pole. While the hikers move through the woods, the compass' needle moves towards the North end of to help them find their way.
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Why are magnets beneficial for solving simple problems dealing with movement?
Why are magnets beneficial for solving simple problems dealing with movement?
Magnets seem like they might only be suitable for holding the grocery list on the refrigerator, but they have many uses and can solve simple problems dealing with movement. Magnets can attract/pull and repel/push other magnetic objects creating movement. If something needs to be moved and it has a magnetic quality using a magnet is a simple way to complete the task.
Magnets seem like they might only be suitable for holding the grocery list on the refrigerator, but they have many uses and can solve simple problems dealing with movement. Magnets can attract/pull and repel/push other magnetic objects creating movement. If something needs to be moved and it has a magnetic quality using a magnet is a simple way to complete the task.
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Mrs. Addly wants to display her students' work on the metal door for other classes to see. She hangs up the work and uses magnets to keep it in place.
Why does this solution work?
Mrs. Addly wants to display her students' work on the metal door for other classes to see. She hangs up the work and uses magnets to keep it in place.
Why does this solution work?
This solution works because the metal is magnetic, so a magnet will be attracted to it and stick to it. The paper is light, so a strong magnet is not needed. If the door were made of a material that does not have a magnetic quality, the magnet would not work, and an alternate solution would be required.
This solution works because the metal is magnetic, so a magnet will be attracted to it and stick to it. The paper is light, so a strong magnet is not needed. If the door were made of a material that does not have a magnetic quality, the magnet would not work, and an alternate solution would be required.
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Mindy needs to get iron filings out of a pile of sand, rice, and dirt in science class. The iron filings are tiny and fine so they blend in and disappear with the mixture. What would be the best tool to remove the filings from the sand?
Mindy needs to get iron filings out of a pile of sand, rice, and dirt in science class. The iron filings are tiny and fine so they blend in and disappear with the mixture. What would be the best tool to remove the filings from the sand?
Using scientific knowledge about magnets and their capabilities can help solve problems that we face in the real-world. If Mindy needs to remove the iron filings, she can use a magnet to remove them from the sand, dirt, and rice. The sand, dirt, and iron filings would slip through the sifter because they are so tiny, tweezers would not be able to sort the small filings out of the mixture, and a microscope would help Mindy see the iron filings better but would not help her separate them.
Using scientific knowledge about magnets and their capabilities can help solve problems that we face in the real-world. If Mindy needs to remove the iron filings, she can use a magnet to remove them from the sand, dirt, and rice. The sand, dirt, and iron filings would slip through the sifter because they are so tiny, tweezers would not be able to sort the small filings out of the mixture, and a microscope would help Mindy see the iron filings better but would not help her separate them.
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Mrs. Harley wants to display a large wooden sign on her metal door to welcome students. She finds a small magnet and attempts to hang it up. The sign keeps sliding down the door.
What can Mrs. Harley do to solve this problem?
Mrs. Harley wants to display a large wooden sign on her metal door to welcome students. She finds a small magnet and attempts to hang it up. The sign keeps sliding down the door.
What can Mrs. Harley do to solve this problem?
Mrs. Harley had a good idea to use a magnet to hold the sign up because the metal door has magnetic properties, but the sign is too heavy for the size magnet she selected. Mrs. Harley will need to choose a larger or stronger magnet to hold up the weight of the sign. Wood can be dense and heavy, so it is dragging the magnet down and falling off the door. A stronger magnet will solve this problem.
Mrs. Harley had a good idea to use a magnet to hold the sign up because the metal door has magnetic properties, but the sign is too heavy for the size magnet she selected. Mrs. Harley will need to choose a larger or stronger magnet to hold up the weight of the sign. Wood can be dense and heavy, so it is dragging the magnet down and falling off the door. A stronger magnet will solve this problem.
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Melissa needs to solve a common problem using magnets for a classroom project. How can she use magnets to solve a common problem?
Melissa needs to solve a common problem using magnets for a classroom project. How can she use magnets to solve a common problem?
Melissa could use any of the solutions for her class project. All of the solutions use a magnet to solve a common problem and are reasonable ideas. Keeping a bag sealed, reaching metal objects up high, and keeping a door closed are all issues a magnet (or two) could solve.
Melissa could use any of the solutions for her class project. All of the solutions use a magnet to solve a common problem and are reasonable ideas. Keeping a bag sealed, reaching metal objects up high, and keeping a door closed are all issues a magnet (or two) could solve.
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Mrs. Allen always loses her glasses. She doesn't want to wear them on her head or around her neck, and she doesn't always have pockets to put her glasses in. They are made of metal. She has brick walls and a magnetic whiteboard in the classroom. What could she do to keep her glasses handy using a magnet to solve the problem?
Mrs. Allen always loses her glasses. She doesn't want to wear them on her head or around her neck, and she doesn't always have pockets to put her glasses in. They are made of metal. She has brick walls and a magnetic whiteboard in the classroom. What could she do to keep her glasses handy using a magnet to solve the problem?
Mrs. Allen wants to keep her glasses handy but doesn't want to wear them on her neck, head, or in a pocket. Her glasses are made of metal, and she has a magnetic whiteboard so she could use a magnet to attach them. Placing the magnet on the board and then attaching the glasses to the magnet will keep them from getting lost, and they will be in an easy to find place.
Mrs. Allen wants to keep her glasses handy but doesn't want to wear them on her neck, head, or in a pocket. Her glasses are made of metal, and she has a magnetic whiteboard so she could use a magnet to attach them. Placing the magnet on the board and then attaching the glasses to the magnet will keep them from getting lost, and they will be in an easy to find place.
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Gluing magnets onto the sides of salt and pepper shakers, so they don't get separated is a solution to a common problem.
Gluing magnets onto the sides of salt and pepper shakers, so they don't get separated is a solution to a common problem.
The statement in the question is true. A common problem is something that can often happen and in someone's everyday, ordinary life. Salt and pepper shakers are sold as a set but can easily get separated if someone sets one down and forgets about it rather than putting them back together. If they have magnets attached to the sides of them, they can be stuck together, so they never get separated.
The statement in the question is true. A common problem is something that can often happen and in someone's everyday, ordinary life. Salt and pepper shakers are sold as a set but can easily get separated if someone sets one down and forgets about it rather than putting them back together. If they have magnets attached to the sides of them, they can be stuck together, so they never get separated.
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How are magnets used in our everyday lives to solve a problem?
How are magnets used in our everyday lives to solve a problem?
All of the problems listed can be solved with a magnet. When we want to display a picture or holiday card, we can use a magnet on the refrigerator. The freezer door is sealed shut and keeps our food cold when the magnets within are close to each other, and the attraction keeps it closed. If a mixture is presented with metallic objects within the magnet can be used to separate those items based on their magnetic properties. These are simple problems and have a simple solution, magnets!
All of the problems listed can be solved with a magnet. When we want to display a picture or holiday card, we can use a magnet on the refrigerator. The freezer door is sealed shut and keeps our food cold when the magnets within are close to each other, and the attraction keeps it closed. If a mixture is presented with metallic objects within the magnet can be used to separate those items based on their magnetic properties. These are simple problems and have a simple solution, magnets!
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Which situation could you help solve with a magnet?
Which situation could you help solve with a magnet?
All of these answer choices are problems that people may be faced with every day, and only one can be solved with a magnet, "Randi dropped paperclips in her water bottle and needs to remove them.". This problem would be solved by putting a magnet near or in the bottle, and the metallic paperclips would be attracted to the magnet, and Randi could pull them out.
All of these answer choices are problems that people may be faced with every day, and only one can be solved with a magnet, "Randi dropped paperclips in her water bottle and needs to remove them.". This problem would be solved by putting a magnet near or in the bottle, and the metallic paperclips would be attracted to the magnet, and Randi could pull them out.
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A hiker is lost in the woods and needs to get something from his pack to help him find his way back to the campsite.
Which magnetic item could help him solve this problem?
A hiker is lost in the woods and needs to get something from his pack to help him find his way back to the campsite.
Which magnetic item could help him solve this problem?
A magnetic item in his backpack that could help him find his way back to the campsite would be the compass. The other things are helpful during hiking but do not use magnets and would not help him find his way back to camp. A compass uses the Earth's natural magnetic field to point towards the North Pole for people to use as a guide for direction.
A magnetic item in his backpack that could help him find his way back to the campsite would be the compass. The other things are helpful during hiking but do not use magnets and would not help him find his way back to camp. A compass uses the Earth's natural magnetic field to point towards the North Pole for people to use as a guide for direction.
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What problem is this junkyard magnet solving?
What problem is this junkyard magnet solving?
Junkyard magnets were an ingenious invention that solved a daily problem for the workers. Instead of breaking their backs lifting heavy materials, they were able to steer the magnet, and it could do all the lifting for them. A driver can control the magnet and move cars, scrap metal, and old appliances in seconds. Not only does this save the workers from lifting heavy things, but it speeds up the job too!
Junkyard magnets were an ingenious invention that solved a daily problem for the workers. Instead of breaking their backs lifting heavy materials, they were able to steer the magnet, and it could do all the lifting for them. A driver can control the magnet and move cars, scrap metal, and old appliances in seconds. Not only does this save the workers from lifting heavy things, but it speeds up the job too!
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Mrs. Addly wants to display her students' work on the metal door for other classes to see. She hangs up the work and uses magnets to keep it in place. Mrs. Addly solved a simple problem using a magnet.
Mrs. Addly wants to display her students' work on the metal door for other classes to see. She hangs up the work and uses magnets to keep it in place. Mrs. Addly solved a simple problem using a magnet.
This statement is true. Mrs. Addly did solve a simple problem by using a magnet. Her door was made of metal, so using something like thumbtacks would not work for hanging the students' work. A magnet would be strong enough to keep the papers up and on display, for all to see.
This statement is true. Mrs. Addly did solve a simple problem by using a magnet. Her door was made of metal, so using something like thumbtacks would not work for hanging the students' work. A magnet would be strong enough to keep the papers up and on display, for all to see.
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Nadine has a crane with a big magnet. She lowers the crane's magnet over a pile of garbage. Which object(s) are strongly attracted to the magnet?
Nadine has a crane with a big magnet. She lowers the crane's magnet over a pile of garbage. Which object(s) are strongly attracted to the magnet?
Magnets attract objects made of certain materials. Objects that are strongly attracted to magnets will stick to them. The plastic fork, sock, and paper plate will not stick to the attraction. These objects are not strongly attracted to the magnet. The metal spoon will stick to the magnet. This object is strongly attracted to the magnet.
Magnets attract objects made of certain materials. Objects that are strongly attracted to magnets will stick to them. The plastic fork, sock, and paper plate will not stick to the attraction. These objects are not strongly attracted to the magnet. The metal spoon will stick to the magnet. This object is strongly attracted to the magnet.
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Based on the table, which statement(s) is true?
Based on the table, which statement(s) is true?
All of the answer choices are correct because they accurately state a fact about magnetic materials. Iron and steel are both magnetic materials and would be attracted to a strong magnet. Plastic, aluminum cans, and cotton are all materials that would not be attracted to a magnet.
All of the answer choices are correct because they accurately state a fact about magnetic materials. Iron and steel are both magnetic materials and would be attracted to a strong magnet. Plastic, aluminum cans, and cotton are all materials that would not be attracted to a magnet.
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Which problem could be solved by using magnets?
Which problem could be solved by using magnets?
The best use for magnets to solve a problem would be securing a broken freezer door. If a magnet is attached to both sides (the door the frame of the freezer) with the opposite sides facing each other, they will be attracted and stick together. Magnets would not keep a dog out of a garden, would not work as a lightbulb, and magnets will not be attracted to a wooden table.
The best use for magnets to solve a problem would be securing a broken freezer door. If a magnet is attached to both sides (the door the frame of the freezer) with the opposite sides facing each other, they will be attracted and stick together. Magnets would not keep a dog out of a garden, would not work as a lightbulb, and magnets will not be attracted to a wooden table.
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Which item(s) below would be attracted to a magnet?
Which item(s) below would be attracted to a magnet?
The iron pipe will be strongly attracted to the magnet because it has magnetic properties. Iron is a magnetic metal, so it would be drawn and stick to the magnet. Copper, plastic, and wood are not magnetic and would not be attracted to the magnet.
The iron pipe will be strongly attracted to the magnet because it has magnetic properties. Iron is a magnetic metal, so it would be drawn and stick to the magnet. Copper, plastic, and wood are not magnetic and would not be attracted to the magnet.
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What could this junkyard magnet pick up that humans can't?
What could this junkyard magnet pick up that humans can't?
Steel objects will be strongly attracted to the junkyard magnet, whereas aluminum, wood, and plastic will not. The magnet will only attract objects with magnetic properties, and of this list, steel is the only object that it would pick up. Steel can be very heavy, and humans cannot easily pick up a large piece by themselves.
Steel objects will be strongly attracted to the junkyard magnet, whereas aluminum, wood, and plastic will not. The magnet will only attract objects with magnetic properties, and of this list, steel is the only object that it would pick up. Steel can be very heavy, and humans cannot easily pick up a large piece by themselves.
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