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| The earth’s movement around the sun. |
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| The study of the moon, stars and other objects in space. |
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| An imaginary line passes through the Earth’s center at the North and South poles. |
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| The north axis points towards this. |
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| When the earth spins on its axis. |
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| One complete revolution around the sun |
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| The path the earth follows. |
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| Egyptians used the appearance of this star to count the days in a year. |
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| summer in the northern hemisphere and winter in the southern hemisphere |
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| What season is it when the north end of the axis is tilted towards the sun? |
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| winter in the northern hemisphere and summer in the southern hemisphere |
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| What season is it when the north end of the axis is tilted away from the sun? |
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| the sun on two days of each year, reaches exactly 23.5 degrees north or south latitude |
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| Halfway between solstices – neither hemisphere is tilted towards or away from the sun. Means equal night. |
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| spring equinox – is around March 21, marks the beginning of spring |
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| fall equinox – is around September 23, marks the beginning of fall |
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| occurs when the moon’s shadow hits Earth or Earth’s shadow hits the moon. |
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| when the moon passes between Earth and the sun, blocking sunlight from reaching earth. |
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| darkest part of the moon’s shadow (sun is completed blocked out) |
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| the faint outer atmosphere of the sun seen during a total eclipse. |
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| moon casts a less dark shadow on a larger space – part of the sun is still visible. |
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| when the earth is directly between the sun and a full moon. |
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| when the moon is in earth’s umbra you can see earth’s shadow on the moon. |
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| moon casts a less dark shadow on a larger space – part of the sun is still visible. |
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| sun is completed blocked out. |
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| when the moon passes partly into the umbra of Earth’s shadow causing it to appear blurry and creating a lighter shadow. |
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| A natural or artificial object that revolves around an object in space. |
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| Italian astronomer who created his own telescope by putting two lenses in a wooden tube and began to study the moon. |
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