Big Idea 13 Test Review: Forces & Motion

Motion is caused by familiar forces like

• push, pull, luster

• push, force, friction

• push, pull, gravity, magnetism

• push, pull, motion

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A _______ is a force that causes an object to move away from the force being applied.

• push

• pull

• friction

• gravity

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A pull is a force that causes an object ____...

• to move a force being applied.

• to stop a force being applied.

• to move away from the force being applied.

• to move toward the force being applied.

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Steven and Jonathan are testing different paper airplane designs to see which will allow a plane to travel the farthest distance. Jonathan folds his plane and attaches a paperclip to the front of it. After he throws the plane, it travels about fifty feet and then falls to the ground. Why does the plane eventually fall to the ground?

• The force of air resistance stops acting on the plane.

• The plane was not designed to carry a load like the paperclip.

• The force of gravity is greater than the forces keeping the plane in the air.

• The paperclip creates a magnetic force that attracts the plane to the ground.

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Marc and Maiya are moving a dresser. They are arguing about which direction to move it. Marc is pushing the dresser with a force of 5 Newtons towards Maiya. Maiya is pushing the dresser towards Marc with a force of 10 Newtons.

What happens to the dresser due to the forces applied?

• The dresser does not move.

• The dresser moves towards Marc.

• The dresser moves towards Maiya.

• The dresser moves towards Maiya, then back towards Marc.

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Some mornings Silly Sally Susie rides in her mother’s car to school, and other mornings she rides in her father’s car. Silly Sallie Susie noticed that when she rides in her mother’s car, it takes less time to travel the same distance as when she is in her father’s car. Based on the information above, which of the following statements is true?

• Her mother's car is traveling at a greater speed than her father's car.

• Her father's car is traveling at a greater speed than her mother's car.

• Both cars are traveling at the same speed since they travel the same distance.

• Both cars accelerate at the same rate, but her mother's car has a greater mass.

Magnets have a north and south pole. What happens if you try to touch the north and south ends of two magnets together?

• The north and south poles will repel each other.

• The north and south poles will be attracted to each other.

• The north and south poles will neither attract nor repel each other.

• The north and south poles will create gravity and attract other objects.

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The force of gravity appears to attract all objects equally, regardless of mass. Which of the following demonstrates this idea?

• Two cars traveling along the road at the same speed in opposite directions.

• A rubber ball will bounce much higher than a wooden ball, even if they weigh the same.

• Magnets can both repel and attract each other, depending on how they come into contact.

• A bowling ball and a marble will fall to the ground at the same rate when someone drops them.

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Jordan is playing tug of war with Jesse. They both understand that to win the game of tug of war, one player must pull the flag over their opponent's line, but during this game, the flag tied to the center of the rope is not moving. What is happening to the rope in this example?

• Jordan is applying more force in one direction.

• Jesse s applying more force in one direction.

• Jordan & Jessie are applying equal forces in the same direction.

• Jordan & Jessie are applying equal forces in opposite directions.

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Serenity tried to pound a large nail into a board using a small hammer. Partway into the board, the nail stopped. Serenity switched to using a heavier hammer, and the nail went into the board easily. Why did the larger hammer work?

• The nail could not push the larger hammer out of the way.

• The larger hammer had less mass, so it exerted more force.

• There is more friction between a large hammer and the nail.

• The larger hammer had more mass, so it exerted more force.

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