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Earth and its moon
Term | Definition |
---|---|
axis | the imaginary line that passes through earth's center from the north pole to the south pole. earths rotates once on its axis every 24 hours |
rotation | the spinning of earth on its axes; one rotation of earth equals one day , earth rotates from west to east on its axis, making the sun ,moon, and stars look as though they are moving from east to west |
revolution | one complete trip of the earth around the sun; one revolution equals one year |
orbit | the earths path around the sun; In the shape of an ellipse or flattened circle` |
hemisphere | one half of a sphere; especially of the earth |
phases of the moon | the regular changes in the way the moon looks from earth; caused by changes in the parts of the moon that reflects light from the sun to the earth |
eclipse | one object in space casting its shadow on another object in space; examples are eclipse of the moon and eclipse of the sun |
shadow | a dark shape made by something blocking out light |