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The Earth in Space

TermDefinition
solar system planets, along with their moons, asteroids and other bodies, and the sun
orbit specific path each planet follows around the sun
revolution one complete circuit around the sun
leap year year with 366 days, which happens every fourth year to make calenders match Earth's movement around the sun
rotate to spin on an axis
axis imaginary line that passes through the center of Earth from the North Pole to the South Pole
atmosphere layer of oxygen and other gases that surrounds Earth
summer solstice day that has the most daylight hours and the fewest hours of darkness
winter solstice day of the year that has the fewest hours of sunlight and the most hours of darkness
equinox either of the days in spring and fall in which the noon sun is overhead at the Equator and day and night are of equal length in both the Northern and Southern Hemispheres
Tropics area between the Tropic of Cancer and the Tropic of Capricorn, which has generally warm temperatures because it receives the direct rays of the sun for much of the year
significant important
reverse opposite
identical exactly the same
 



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