Page 53 - Curriculum Visions Dynamic Book

crater A deep bowl-shaped depression in the surface of a body formed by the high-speed impact of another, smaller body.
crystal An ordered arrangement of molecules in a compound. Crystals that grow freely develop flat surfaces.
meteorite A meteor that reaches the Earth’s surface.
micron A millionth of a metre.
mineral A solid crystalline substance.
silt Particles with a range of 2 microns to 60 microns across.
solar wind The flow of tiny charged particles (called plasma) outward from the Sun.
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