Axis - An imaginary line through the Earth from the North Pole to the South Pole. The Earth spins on its axis., Tilt - The Earth is tilted 23.5° on its axis. This tilt causes the seasons., Orbit - The path the Earth follows around the Sun. It takes 365 days to complete one orbit., Solstice - Happens twice a year when the Sun is most tilted toward or away from a hemisphere, causing the longest or shortest day., Equinox - Happens twice a year when day and night are equal in length because the Sun is directly over the equator., Rotation - When the Earth spins on its axis, it takes 24 hours and causes day and night., Revolution - When the Earth orbits around the Sun, taking 1 year (365.25 days) to complete., Equator - An imaginary line around the middle of the Earth that divides it into Northern and Southern Hemispheres., Southern Hemisphere - The half of Earth south of the equator — includes Australia, South America, and parts of Africa., Northern Hemisphere - The half of Earth north of the equator — includes Europe, North America, and most of Asia.,

Earth Space Science Revision Flash Cards

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