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19 Cards in this Set
- Front
- Back
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axis
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a straight line around which an object turns
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atmosphere
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the air space above Earth or another planet
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mass
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a measure of the amount of matter in an object
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rusted iron
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a metal that is covered with a reddish-brown material
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unbearable
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describes a condition that is painful and difficult to live with
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grammar
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rules that govern the correct use of language
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an excerpt
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a portion or section of a text that has been removed from a larger or longer text
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particles
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small pieces of something
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energy
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the power to do work
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carbon dioxide
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a gas with no color, has no odor
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water vapor
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water that has changed from liquid to gas and usually cannot be seen
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reddish
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somewhat red
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a mission
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a group of a people sent somewhere for a purpose
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a sample
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a single thing that shows one example of things in a larger group
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an astronaut
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a person who travels in a spacecraft
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a space probe
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a man-made machine that goes into outer space without a crew of humans
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gravity
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a natural force that pulls objects to the ground
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a spacecraft
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a vehicle that is used to travel beyond earth's atmosphere
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Neil Armstrong
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the first human being to step foot on Earth's moon
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