Understanding Weight and Gravity

Which of the following best explains why weight varies at different locations on Earth?

• The mass of an object changes.

• Gravitational acceleration changes.

• Earth's atmosphere affects weight.

• Weight depends on the Moon's gravity.

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At which location on Earth would you weigh slightly less due to the centrifugal force caused by Earth's rotation?

• At the poles

• At the equator

• At sea level

• On a mountain

What causes the difference in gravitational pull at the equator and the poles?

• Earth's magnetic field

• The Earth's rotation and oblate shape

• The tilt of Earth's axis

• The influence of the Sun's gravity

How does altitude affect weight?

• Weight increases as altitude increases.

• Weight decreases as altitude increases.

• Weight remains constant regardless of altitude.

• Weight depends on the Moon's position at higher altitudes.

If a person weighs 600 N at sea level, how would their weight change on a mountain?

• Increase slightly

• Decrease slightly

• Remain the same

• Double

Which region on Earth experiences the least gravitational acceleration due to its distance from Earth's center?

• At the North Pole

• At the equator

• At the South Pole

• In the middle of the ocean

Why do astronauts in space experience "weightlessness"?

• There is no gravity in space.

• Their mass becomes zero in space.

• They are in free fall, creating microgravity.

• The Moon's gravity cancels Earth's gravity.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

What role do local geological features, such as dense mineral deposits, play in weight differences?

• They increase the centrifugal force.

• They create localized variations in gravity.

• They shift the center of Earth's mass.

• They reduce the mass of objects above them.

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NGSS.HS-PS2-4

How does Earth's rotation contribute to weight differences?

• It increases gravity at all locations.

• It reduces effective gravity at the equator.

• It cancels gravity at the poles.

• It has no impact on weight.

What is the primary factor that determines the strength of gravitational acceleration at a given location?

• The temperature of the Earth's surface

• The altitude and latitude of the location

• The size of the object's mass

• The time of day