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space and the universe for grade 5 science

sun The star at the center of our solar system.
rotate To spin on an axis
axis An imaginary line that passes through Earth's center and its North and South poles
revolve To travel in a closed path
orbit The path one body takes in space as it revolves around another
equator An imaginary line around Earth equally distant from the North and South Poles
moon Any natural body that revolves around a planet
crater A los, bowl-shaped area on the surface of a planet or moon
moon phase One of the shapes the moon seems to have as it orbits the Earth
eclipse An event that occurs when one object in space passes through the shadow of another object in space
refraction The bending of light as it moves from one material to another
star A huge ball of very hot gases in space
solar system A star and all the planets and other objects that revolve around it
constellation A pattern of stars, named after a sythological or religious figure, an object, or an animal
planet A body that revolves around a star
universe Everything that exists, including such things as stars, planets, gas, dust, and energy
galaxy A grouping of gas, dust, and many stars, plus any objects that orbit those stars
Created by: msmoe5thscience