REVIEW: Forces, Mass vs. Weight

When an astronaut carries a wooden block to the moon, which of the following properties of the block remains unchanged compared to its state on Earth?

• weight

• mass

• color

• volume

A compass is placed near a certain type of metal. The needle on the compass moves. What type of force causes the needle to move?

• Electrical force

• Frictional force

• Gravitational force

• Magnetic force

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Evan rubbed a balloon on his hair and held the balloon next to several small pieces of paper. He observed the small pieces of paper stick to the balloon. Which of the following is responsible for the balloon sticking to the wall?

• Electrical force

• Frictional force

• Gravitational force

• Magnetic force

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Which of the following describes a similarity between magnetic force and gravitational force?

• Magnetic force and gravitational force are both contact forces.

• Magnetic force and gravitational force only work at close distances.

• Magnetic force and gravitational force both exhibit a push and pull force.

• Magnetic force and gravitational force are both non-contact forces.

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Which of the following is an example of a contact force?

• Gravity acting on a falling apple.

• Magnetic force on a piece of iron near a magnet.

• Friction between a car's tires and the road.

• Electrostatic force between two charged bodies.

Which statement best describes the relationship between mass and weight?

• Weight is dependent on mass and gravity.

• The mass will always be greater than the weight.

• Weight is always needed to calculate mass.

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Which of the following satellites experiences the least gravitational force from the Earth?

• A 500 kg satellite orbiting 200 miles above Earth's surface.

• A 750 kg satellite orbiting 2,000 miles above Earth's surface.

• A 500 kg satellite orbiting 2,000 miles above Earth's surface.

• A 750 kg satellite orbiting 200 miles above Earth's surface.

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Mass remains constant regardless of location, but weight can change. Which scenario would result in a decrease in a person's weight without altering their mass?

• Traveling to the moon.

• Swimming in a deep ocean.

• Exercising regularly on Earth.

• Eating a balanced diet.

Which of the following statements is true regarding the Law of Gravity?

• The closer the objects are the greater the gravitational force.

• The larger the object the weaker it's gravitational force.

• The smaller the object the stronger the gravitational force.

• The farther apart the objects are the greater the gravitational force.

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Which of the following factors does not affect the gravitational force between two objects?

• The distance between the two objects.

• The color of the objects.

• The mass of the objects.

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