8/8/2019 What is the Difference Between Mass and Weight Answers

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Name __________________________

What is the difference between mass and weight?

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Mass is measured in kilograms, kg, and is the amount of material contained within an object. Your mass is the samewherever you are.

Weight is the force of gravity on the object and is measured innewtons, N. Your weight will change depending on which

planet you are on. In deep space, you may well be weightlessbut you will never be massless.

Most people use the word weight when they should use theword mass .

Watch the clips of the Apollo astronauts on the Moon.

1. What has changed: the astronauts’ mass or their weight?

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2. What observations lead to this conclusion?

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3. What does this tell you about the gravity on the Moon compared with gravityon Earth?

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4. What is wrong with this statement: “My weight is 60 kg.”

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Their weight has changed.

When they jump up, they fall more slowly on the Moon.Their mass is the same – their legs still need to push the forward .

Gravity on the Moon is weaker than gravity on the Earth.

The person should say: “My mass is 60 kg”.