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Worksheets2024-25 Physical Sciences Final (8th grade Amplify FM, MF, TE)
Total questions: 28
Worksheet time: 14mins
Quincy and Tyshawn work at a grocery Store. After the grocery store closed, they were playing a game with a shopping cart and Quicy's skateboard. They crashed the skateboard and the shopping cart two times. The shopping cart had more mass in Crash 2 than it did in Crash 1. Use the information in the diagram to answer: In which crash did the skateboard experience a stronger force? Why?
The skateboard did not experience a force; only the shopping cart experienced a force in the crashes.
Crash 2; the force on the cart was stronger in this crash, so the force on the skateboard was also stronger.
The diagram doesn’t tell you anything about the force on the skateboard. It only gives information about the force on the shopping cart.
The skateboard experienced the same force in both crashes. The shopping cart changed speed by the same amount in each crash, so the force on the skateboard was the same each time.
Michelle pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters. Why did the block stop moving?
The floor exerted a force that is opposite to the direction of the block’s motion.
The block ran out of force.
The floor absorbs force from the block.
All objects stop moving because their natural state is to be still.
Miniature golf is a game in which players hit a golf ball with a club, which causes the ball to roll along the flat ground. Three golf balls with the same mass were rolling on the ground. Each ball was hit by a golf club, but not from the same direction. All the golf balls changed speed as a result of being hit. Use the information in the diagram to answer. Which golf ball(s) experienced the strongest force when hit? How do you know?
The white and purple golf balls because they gained force, while the green golf ball lost force.
The green golf ball because it takes a stronger force to slow something down than to speed something up.
The green golf ball because it changed speed the most.
The white golf ball because it has the fastest ending speed.
Hockey is a sport in which players use hockey sticks to push a puck across smooth ice. At practice one day, three different-colored hockey pucks were sliding on the ice. The green hockey puck has less mass than the black and purple hockey pucks, which have the same mass. A player hit each hockey puck with a stick, but not from the same direction. Use the information in the diagram to answer. Which puck(s) experienced the strongest force when hit? How do you know?
All three hockey pucks experienced the same force because they changed speed by the same amount.
The black hockey puck; it is more massive and it has the fastest ending speed.
The purple hockey puck; it takes a stronger force to slow down a more massive object than to speed it up.
The black and purple hockey pucks; they have more mass than the green puck, but changed speed by the same amount.
Three friends were kicking soccer balls at a neighborhood field. Three soccer balls were rolling across the field. The black soccer ball has less mass than the blue and orange balls, which have equal mass. All three soccer balls were kicked by one of the friends, but not all from the same direction. Use the information in the diagram to answer. Which soccer ball(s) experienced the strongest force? How do you know?
All three soccer balls experienced the same force because they changed speed by the same amount.
The orange soccer ball; it has more mass and the fastest ending speed.
The blue soccer ball; it takes a stronger force to slow down a more massive object than to speed it up.
The blue and orange soccer balls; they have more mass than the black soccer ball, but changed speed by the same amount.
Scientists created models that show a rocky asteroid crashing into a moon (less mass) and a planet (more mass). In both crashes, the asteroid was the same mass. Scientists want to know what happened to the asteroid. Use the information in the diagram to answer. In which crash did the asteroid experience a stronger force? How do you know?
Crash 2; the force on the planet was stronger in this crash, so the force on the asteroid was also stronger.
There was no force on the asteroid. Only the moon and planet experienced a force in each crash.
The diagram doesn’t tell you anything about the force on the asteroid. It only gives information about the force on the planet and the moon.
The force was the same in both crashes. The planet and moon changed speed by the same amount so that means the force on the asteroid was the same in both crashes.
At dinner, Cory passed the salt shaker to his sister Chloe by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters. Why did the salt shaker stop moving?
The salt shaker ran out of force.
The table exerts a force that is opposite to the salt shaker’s motion.
The table absorbs force from the salt shaker.
All objects stop moving because their natural state is to be still.
Curling is a sport in which players push large stones across smooth ice. Three curling stones that have the same mass were sliding across the ice. They were each pushed by a player, but not all from the same direction. Each curling stone changed speed as a result of being hit. Use the information in the diagram to answer: Which curling stone(s) experienced the strongest force when hit? How do you know?
The blue curling stone experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.
The blue curling stone experienced the strongest force because it changed speed the most.
The orange curling stone experienced the strongest force because it has the fastest ending speed.
The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.
In a computer simulation, Jayson moves a magnet (Magnet 2) toward another magnet (Magnet 1) that cannot move. What happens to the potential energy in the system of magnets?
The potential energy does not change because the magnets in the system do not change
The potential energy increases because Magnet 2 moves against the magnetic force
The potential energy decreases because Magnet 2 moves against the magnetic force.
The potential energy decreases because Magnet 2 moves in the same direction as the magnetic force.
Based on the magnetic field line diagrams, what will happen next with these two sets of magnets?
The magnets in Set 1 will repel, and the magnets in Set 2 will attract.
The magnets in Set 1 will attract, and the magnets in Set 2 will repel.
The magnets in Set 1 will not move, and the magnets in Set 2 will attract.
In both sets, the magnets will attract.
Leynard moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement? (The letters N and S show the magnetic poles.)
The potential energy decreases because the train moves in the same direction as the magnetic force.
The potential energy decreases because the train moves against the magnetic force.
The potential energy increases because the train moves against the magnetic force.
The potential energy does not change because the magnets in the system do not change.
A spaceship is traveling through space. Suddenly, its speed increases. What can you say about the kinetic energy of the spaceship?
It increases.
It decreases.
It remains the same.
It becomes zero.
What happens to the energy in a system of magnets when the magnetic force causes two magnets to move?
The potential energy in the system increases.
The kinetic energy in the system decreases.
Some kinetic energy changes into potential energy.
Some potential energy changes into kinetic energy.
Charla puts two magnetic toy trains very close to each other on a track. What will happen next, and why? (The letters N and S show the magnetic poles.)
The trains will move closer to each other because the magnetic force will pull the trains together.
The trains will move away from each other because the magnetic force will push the trains apart.
The trains will move away from each other because the magnets are not touching.
Dominick sets identical magnetic carts on two tracks. At the end of each track is a large magnet that cannot move. Lin can move the carts one space to the left or one space to the right. Which movement will increase the potential energy in the system the most?
Moving the cart on Track 2 one space to the right (→).
Moving the cart on Track 2 one space to the left (←).
Moving the cart on Track 1 one space to the right (→).
All these movements will result in the same change in potential energy because they each move a magnetic cart the same distance.
Based on the magnetic field line diagrams, what will happen next with these sets of magnets?
The magnets in Set 1 will attract, and the magnets in Set 2 will repel.
The magnets in Set 1 will attract, and the magnets in Set 2 will not move.
The magnets in Set 1 will repel, and the magnets in Set 2 will attract.
In both sets, the magnets will attract.
Brayden puts two magnetic toy vehicles very close to each other. What will happen next, and why? (The letters N and S show the magnetic poles.)
The toy vehicles will not move because the magnets are not touching.
The toy vehicles will move closer to each other because the magnetic force will pull the vehicles together.
The toy vehicles will move away from each other because the magnets are not touching.
The toy vehicles will move away from each other because the magnetic force will push the toy vehicles apart.
The letters N and S show the magnetic poles. An engineer is experimenting with two identical magnetic roller coaster cars on different sides of a center magnet that cannot move. The engineer is planning to move one car one space. Which movement will result in the largest increase in potential energy?
Moving Car 1 one space toward the center magnet.
Moving Car 1 one space away from the center magnet.
Moving Car 2 one space away from the center magnet.
All these movements will result in the same change in potential energy because they each move a roller coaster car the same distance.
A spaceship is traveling through space. Suddenly, its kinetic energy decreases. What is most likely to be true about the speed of the spaceship?
The speed increases as the kinetic energy is converted into speed.
The speed decreases as the kinetic energy decreases.
The speed remains the same because speed and kinetic energy are not related.
The speed increases to make up for the decrease in kinetic energy.
How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?
The magnetic force increases the potential energy in the system.
The magnetic force decreases the kinetic energy in the system.
The magnetic force changes kinetic energy into potential energy.
The magnetic force changes potential energy into kinetic energy.
A space shuttle is covered with two layers of carbon. The two layers are the same size and have the same number of molecules. When the space shuttle is sitting on the ground, the layers do not touch, as shown in the diagram above. When the space shuttle takes off, the layers move so that they are touching. Use the information in the diagram to answer the question:
How does the temperature of the outer layer compare with the temperature of the inner layer before the layers touch? What will happen after the layers have been touching for a while?
Before the layers touch, the outer layer is hotter than the inner layer. Once the layers are touching, the outer layer will transfer kinetic energy to the molecules in the cooler inner layer until both layers reach the same temperature, which will be in between their starting temperatures.
Before the layers touch, the outer layer is hotter than the inner layer. Once the layers are touching, the cooler inner layer will gain kinetic energy until the molecules of both layers have an energy of 90, because hotter things increase the temperature of cooler things.
Before the layers touch, the outer layer is cooler than the inner layer. Once the layers are touching, the inner layer will transfer kinetic energy to the molecules in the cooler outer layer until both layers reach the same temperature, which will be in between their starting temperatures.
Before the layers touch, the layers are different temperatures. Once the layers are touching, kinetic energy and cold energy will transfer between the molecules in the two layers until both layers reach the same temperature, which will be in between their starting temperatures.
A plumber is going to put two pipes in a wall, one in front and one in back. The pipes will be touching once they are installed. Both pipes are the same size and have the same number of molecules. The diagram above shows the pipes now, before they have touched. Use the information in the diagram to answer the question. How does the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch? What will happen after the pipes have been touching for a while?
Before the pipes touch, the front pipe is cooler than the back pipe. Once the pipes are touching, the back pipe will transfer kinetic energy to the molecules in the cooler front pipe until both pipes reach the same temperature, which will be in between their starting temperatures.
Before the pipes touch, the two pipes are different temperatures. Once the pipes are touching, the kinetic energy and cold energy will transfer between the molecules in the two pipes until both pipes reach the same temperature, which will be in between their starting temperatures.
Before the pipes touch, the front pipe is hotter than the back pipe. Once the pipes are touching, the cooler back pipe will gain kinetic energy until the molecules in both pipes have an energy of 100, because hotter things increase the temperature of cooler things.
Before the pipes touch, the front pipe is hotter than the back pipe. Once the pipes are touching, the front pipe will transfer kinetic energy
A chef takes four pans from different parts of her kitchen and puts them in two stacks. The diagram above shows the pans before they touch each other. Use the information in the diagram to answer the question. After the pans have been touching for a while, which of the two bottom pans will be cooler, and why?
The smaller bottom pan will be cooler than the larger bottom pan, because less energy has to transfer for the molecules to reach the same temperature as the molecules of the top pan.
The larger bottom pan will be cooler than the smaller bottom pan. It started with more total energy, so less energy had to transfer for both pans to reach the same total energy.
The larger bottom pan will be cooler than the smaller bottom pan, because the energy that transferred to it will have spread out over more molecules.
Mykhla puts a piece of toast on a plate. The toast is hot from the toaster. When she puts the toast on the plate, the energy of the plate increases. What must be true of the energy of the toast?
Its energy stays the same while the energy of the plate increases.
Its energy decreases while the energy of the plate increases.
Its energy increases while the energy of the plate increases.
It is impossible to know without data on the number of molecules in each object.
Puma is cooking rice in a pot. When he leaves the pot on the stove for a while, the temperature of the rice increases. What happens to the molecules of the rice when the temperature of the rice increases?
The energy of the molecules in the rice increases.
The cold energy of the molecules in the rice decreases.
The energy of the molecules in the rice decreases.
More heat molecules combine with the molecules in the rice.
Christina and JaNyah are at a construction site and they are stacking bricks. The diagram above shows the bricks before they touch. Use the information in the diagram to answer the question. After the bricks have been touching for a while, whose top brick will be cooler?
Ralph’s top brick will be cooler than Sheila’s top brick, because less energy has to transfer for Ralph’s brick’s molecules to reach the same temperature as the molecules of his bottom brick.
Sheila’s top brick will be cooler than Ralph’s top brick, because Sheila’s started with more total energy, so less energy had to transfer for both her bricks to reach the same total energy.
Sheila’s top brick will be cooler than Ralph’s top brick, because the energy that transferred to Sheila’s was spread out over more molecules.
Both will be the same temperature, because both bottom bricks had the same amount of energy to transfer and the molecules in the top bricks started with the same energy.
Jaiya and Alyssa are camping and have potatoes wrapped in foil to eat. Alyssa put her potato in the campfire for a while, but Jaiya did not. Now Alyssa's potato has a high temperature. What is the difference between the molecules of the two potatoes?
There is no difference because both potatoes are made of the same type of molecules.
The molecules of Jaiya's potato are smaller than the molecules of Alyssa's potato
The molecules of Alyssa's potato are moving and the molecules of Jaiya's potato are not moving
The molecules of Alyssa's potato are moving faster than the molecules of Jaiya's potato
Blake pours some iced tea into a glass. When he puts the iced tea in the glass, the energy of the glass decreases. What must be true of the energy of the iced tea?
Its energy stays the same while the energy of the glass decreases.
Its energy decreases while the energy of the glass decreases.
Its energy increases while the energy of the glass decreases.
It is impossible to know without data on the number of molecules in each object
