Chapter 3 Review

Charlotte and Julian investigate gravity on a playground. Which of their observations shows that a ball has overcome the force of gravity.

• A basketball is at rest on the ground.

• A baseball soaring in the air.

• A rubber ball is falling to the ground.

• A soccer ball is rolling down a hill.

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The class looks for objects that have overcome the force of gravity. Which objects could they identify? Select three answer choices.

• A bee that is flying

• A boat floating on a lake.

• A falling leaf

• a hot air balloon in the sky

• An airplane that is taking off

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Manuel investigates the force of gravity by dropping a pencil. What does the investigation show? Select the words that complete the equation.

Gravity can ________ objects across a distance. Gravity _________ have to touch objects to move them.

• Push;

  does

• pull;

  does

• push;

  does not

• pull;

  does not

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NGSS.5-PS2-1

The students are working on a science poster. They cut up old magazines to find five images of objects that can overcome the force of gravity. Which object would require the greatest force to overcome Earth's gravitational pull?

• a hot air balloon with passengers

• a toy rocket

• a rocket carrying astronauts

• a hummingbird

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You are watching a nature program on television. You observe animals jumping or leaping in the air. Which animal must use the greatest force to lift off the ground?

• a mouse, which is a small animal

• a rabbit, which is a fast animal

• a frog, which jumps most often

• a jaguar, which is a heavy animal

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In which position will the planet experience the greatest gravitational pull?

• The planet closest to the sun

• The planet farthest away from the sun

• The largest planet

• The smallest planet

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Four identential rockets take different payloads into space. Examine the rockets and their payloads. Which rocket needs the LEAST force?

Rocket A: 25,000 kg

Rocket B: 150,000 kg

Rocket C: 2,000 kg

Rocket D 63,000 kg

• Rocket A: 25,000 kg

• Rocket B: 150,000 kg

• Rocket C: 2,000 kg

• Rocket D: 63,000 kg

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Imagine you travel to a planet that is less massive than Earth. Compared to Earth, how much force would it take for you to jump off the ground?

• more force

• less force but not zero force

• zero force

• The same amount of force

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At what point is gravity pulling on a baseball after it is hit?

• when the ball is rising

• when the ball is falling

• When the ball is at its highest point

• at all times

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NGSS.MS-PS3-5

Which of the following statements is true about our solar system?

• Earth and the Sun have equal gravitational force.

• The gravitational force of the sun has no impact on Earth's orbit.

• The Sun has a gravitational pull on Earth, but Earth does not have a gravitational pull on the sun.

• The Sun has a greater gravitational pull on Earth because it is so much larger than Earth.

Tags

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