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16 terms

4th Grade Solar System

STUDY
PLAY
rotation
the act of spinning around an axis
revolution
one complete trip around an object in circular or nearly circular paths
orbit
the path an object takes as it travels around another object
axis
a real or imaginary line that a spinning object turns around
phase
a temporary state of being, often used to describe a change in the appearance of the moon
gravity
a force of attraction or pull between all objects
meteor
a piece of rock, ice, or metal that burns up in the Earth's atmosphere causing a streak of light to appear in the sky
planet
a large sphere in space that obrits a star
solar system
the sun and all the objects that orbit around it
star
a hot sphere of gases in space that makes its own light
constellation
a group of stars that appear to form a pattern in the night sky
a blocking of the moon's light when the moon passes into Earth's shadow; happens when Earth is directly between the sun and the moon
lunar eclipse
a blocking of the sun's light that happens when Earth passes through the moon's shadow; at that time the moon is between the Earth and the sun
solar eclipse
apparent motion
the way something appears or seems to move; is not real motion ex:the sun appears to rise in the east and seems to set in the west
Jupiter, Saturn, Uranus, Neptune
Gas planets
Mercury, Venus, Earth, Mars
Rocky planets