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Answer Key
Grade 3 Reading — Science
1.
solid, liquid, and gas
2.
Solids keep their shape; liquids take the shape of their container.
3.
Gas particles spread out and move quickly; solid particles stay close and vibrate in place.
4.
ice melting into water
5.
air (including oxygen and nitrogen)
6.
six
7.
the pivot point on which a lever rests
8.
a ramp (or sloping surface)
9.
a pulley
10.
a bicycle or can opener
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