What is the central idea of this unit?

• Nutrition impacts our health and development.

• Nutrition is important for astronauts.

• Astronauts should eat healthy.

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How many calories should an astronaut eat?

• 1000

• Between 1500 and 3200

• Less than 500

• More than 4000

Astronaut food is usually:

• Hot

• Wet

• Dehydrated

• Junk

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How long do astronauts usually stay in space?

• about six years

• about 1 year

• about 10 months

• about six months

What are calories?

• A calorie is a unit of sugar.

• A calorie is a unit of water.

• A calorie is a unit of energy.

• A calorie is a unit of mass.

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What is the system for preserving food better?

• Heating

• Freezing

• Vacuum

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If an astronaut is not careful, his food will float away. Food floats in space because _____.

• Space air is too dense.

• There is no gravity in space.

• Gravity is strong in space.

• All astronaut food is turned into a light powder.

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Today, astronauts on the International Space Station _____.

• Can enjoy foods like spaghetti

• Cannot warm foods

• Must eat all foods out of tubes

• Cannot eat due to zero gravity

The kitchen in a spaceship is called a _____.

• Space station

• Space shuttle

• Galley

• Kitchen

How big were rations for astronauts 60 years ago?

• There were normal rations.

• It was based on army survival rations.

• Very big.