Unit 1 Test Review

Imagine Sophia, Evelyn, and Nora are having a race with their toy carts along a track. What happens to the energy of Sophia's cart as it zooms past point B on the track?

• Potential energy is transformed to kinetic energy.

• Kinetic energy is transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

• Potential energy decreases and kinetic energy stays the same.

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Imagine William, Noah, and Zoe are playing with a toy car. What would you call the force they exert on the toy car?

• a pull exerted on an object

• a measure of how heavy an object is

• a push, pull or twist exerted on an object

• a change in the direction of motion of an object

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NGSS.3-PS2-1

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Rohan, Ava, and Aria are planning a science experiment to demonstrate Newton’s third law during the collision of two objects. They are debating on what kind of objects they should use to best illustrate their point. Can you help them decide?

• They should use objects with the same mass, making the result of equal forces easier to see.

• They should use a larger object and a smaller object. The larger object would exert more force on the smaller object, showing unequal forces instead of equal ones.

• They should use objects that are the same diameter, showing equal forces during a collision, proving Newton's 3rd law.

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NGSS.MS-PS2-1

Imagine Samuel, Aria, and Arjun are racing their remote-controlled cars. The speed of these cars determines how much kinetic energy they have. Can you describe the relationship between the speed and kinetic energy of their cars?

• There is no relationship between speed and kinetic energy.

• There is a linear relationship between speed and kinetic energy.

• There is a constant relationship between speed and kinetic energy.

• There is a nonlinear relationship between speed and kinetic energy.

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NGSS.MS-PS3-1

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Imagine Kai and Benjamin are playing catch. What kind of force allows the ball to drop if they don't catch it? (Gravity)

• Contact Force

• Non Contact Force

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Rohan, Aiden, and Charlotte are having a debate. Rohan says that the frictional force is a contact force, while Aiden believes it's a non-contact force. Who do you think is correct?

• Rohan

• Aiden

Aiden, Aria, and Arjun are having a debate. Aiden thinks that air resistance force is a contact force, while Aria believes it's a non-contact force. Who do you think is correct?

• Aiden

• Aria

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NGSS.MS-PS2-5

Ava and Aiden are having a debate. Ava says magnetic force is a contact force, while Aiden believes it's a non-contact force. Abigail, who do you think is correct?

• Ava

• Aiden

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NGSS.MS-PS2-3

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Evelyn and Liam are playing a game of tug-of-war. What kind of force is Evelyn applying on the rope? (Applied Force)

• Contact

• Non Contact

Imagine Daniel and Ava are having a fun playtime with their toys. Suddenly, David comes up with a challenge. He wants to move all the toys to the shelves. But, he needs to calculate the amount of work required to lift each toy. Which data do you think David would need to collect?

• the length of each shelf

• the time it took for David to move each toy

• the amount of force David needed to lift each toy

• the strength of David who moved the toy