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Schrift - wk 3.1 Earth

Astronomy the study of the moons, stars and other objects in space
Axis an imaginary line that passes through Earth's center and the North and South Poles, about which the Earth rotates
Rotation The spinning motion of a planet about its axis
Revolution The movement of an object around another object
Orbit The path of an object as it revolves around another object in space
Phase One of the different shapes of the moon as seen from Earth
Eclipse The partian or total blocking of one object by another
Solar Eclipse The blocking of sunlight to Earth that occurs when the moon is between the sun and Earth
Lunar eclipse The blocking of sunlight to the moon that occurs when Earth is directly between the sun and moon
Tide The rise and fall of the level of water in the ocean
Gravity The attractive force between two objects, how much force depends on their masses and the distance between them
Telescope A device built to study distance objects by making them appear closer
Crater A round pit n the moon's surface
The cause of seasons Tilt of the Earth
atmosphere the layer of air that surrounds the Earth like a blanket, is made up of a mixture of gases plus small amounts of tiny solids and liquids, and keeps temperatures on Earth just right to support life.
greenhouse effect a natural heating process that occurs when certain gases (carbon-dioxide) and water vapor in Earth's atmosphere trap heat.
global warming an increase in earth's average temperature that has occurred over the last 100 years because too much carbon dioxide stops the Earth’s heat from going through the atmosphere and into space
Why does earth have seasons? because the earth is tilted on its axis, causing parts of earth to be closer to the sun at different times throughout the year
Climate the pattern of weather that occurs in an area over many years
the time it takes the Earth to revolove around the sun on time one year
How many days are in one year? 365
Created by: kschrift