Weight vs. Mass: Understanding Gravity in Space

Why do objects appear weightless on the International Space Station?

• There is no gravity in space
• The space station cancels out Earth's gravity
• Objects are in constant freefall around Earth
• Astronauts use special anti-gravity technology

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NGSS.MS-PS2-5

How does an astronaut's weight on the Moon compare to their weight on Earth?

• It's the same
• It's one-sixth of their Earth weight
• It's twice their Earth weight
• It's zero

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

What is the correct equation for weight?

• W = m / g
• W = m + g
• W = m x g
• W = m - g

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NGSS.MS-PS2-4

Which of the following is NOT dependent on gravity?

• Weight
• Mass
• Freefall
• Orbital velocity

What is the approximate speed of the International Space Station as it orbits Earth?

• 17,500 mph
• 25,000 mph
• 10,000 mph
• 5,000 mph

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NGSS.MS-PS3-1

How would the mass of an object change if moved from Earth to the Moon?

• It would decrease
• It would increase
• It would become zero
• It would stay the same

What causes the sensation of weightlessness on the International Space Station?

• The absence of gravity
• Constant freefall around Earth
• Special weightlessness chambers
• The station's artificial gravity system

Which force keeps the Moon in orbit around Earth?

• Magnetic force
• Centrifugal force
• Gravity
• Solar wind

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What would happen if you tried to arm wrestle in microgravity?

• One person would win easily
• It would be impossible to do
• You'd spin around uncontrollably
• It wouldn't work as expected due to lack of friction

How does the acceleration due to gravity (g) near Earth's surface compare to that on the International Space Station?

• It's the same on both
• It's slightly less on the ISS
• It's zero on the ISS
• It's greater on the ISS