Unit 3 Earth and Space Vocabulary

What is made up of a star, planets and other bodies that revolve around it?

• Universe
• Solar System
• Galaxy
• Space

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A __________________ is a large round body that revolves around a star in a clear orbit.

• planet
• moon
• sun
• asteroid

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The unit of measure scientists use to measure distances in our solar system is called?

• kilometers
• light years
• days
• astronomical unit

To turn like a top means to

• revolve
• spin
• rotate
• twirl

The force that pulls objects toward each other is called

• friction
• gravity
• repel
• orbit

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The path an object takes around another object in space.

• gravity
• axis
• revolution
• orbit

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Earth rotates around an imaginary line called an ________________.

• orbit
• pole
• axis
• gravity

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Earth ________________ or travels around the sun.

• revolves
• rotates
• spins
• turns

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The changes in the appearance of the moon's shape are known as ________________

• moon reflections
• moon phases
• moon light
• moon rotations

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A _____________ is an object that moves around another larger object in space.

• reflection
• comet
• crater
• satellite

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