2024-25 Physical Sciences Final (8th grade Amplify FM, MF, TE)

3. 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.

Tags

NGSS.MS-PS2-1

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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.

Tags

NGSS.MS-PS2-2

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.

Tags

NGSS.MS-PS2-1

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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.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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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.

Tags

NGSS.MS-PS2-1

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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.

Tags

NGSS.MS-PS2-2

12. 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.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

2. 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.

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NGSS.MS-PS2-2

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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.

Tags

NGSS.MS-PS2-3

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