2 Our Planet, Earth Key Ideas
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| orbit | path one object makes as it circles around another
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| axis | imaginary line running through Earth between the North and South Poles
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| solstice | point at which days are longest in one hemisphere and shortest in another
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| revolution | circular journey around the sun
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| equinox | point at which, everywhere on Earth, days and nights are nearly equal in length
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| rotation | complete turn
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| time zones | areas sharing the same time
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| core | sphere of very hot metal at the center of Earth
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| atmosphere | thick layer of gases or air
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| landform | shapes and types of land
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| crust | thin layer of rocks and minerals that surrounds Earth's mantle
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| weathering | process that breaks rocks down into tiny pieces
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| valley | stretch of low land between mountains or hills
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| erosion | process in which water, ice, or wind remove small pieces of rock
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| deposition | process of depositing material eroded and carried by water, ice, or wind
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| plateau | large, mostly flat area that rises above the surrounding land
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| plain | large area of flat or gently rolling land
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| delta | a flat plain formed on the seabed where a river deposits material over many years
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| plate tectonics | theory that explains how huge blocks of Earth's crust called "plates" move
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| magma | stream of soft, nearly molten rock
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| plate | block of rock and soil that makes up Earth's crust
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| fault | seam in Earth's crust
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
marydykstra
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