Earth's Structure; Lessons 1 - 3
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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| Sphere | A ... is shaped like a ball, with all points on the surface at an equal distance from the center.
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| Geosphere | The ... is Earth's entire solid body.
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| Gravity | ... is the force that every object exerts on every other object because of their masses.
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| Density | ... is the amount of mass in a material per unit volume.
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| Crust | The brittle, rocky outer layer of Earth is called the ...
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| Mantle | The ... is the thick middle layer in the solid part of Earth.
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| Lithosphere | Scientists group the crust and the uppermost mantle into a rigid layer called the ...
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| Asthenosphere | This plastic layer within the mantle is called the ...
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| Core | The dense metallic center of Earth is the ..., as shown in Figure 10.
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| Magnetosphere | The outer part of the magnetic field that interacts with these particles is called the ...
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| Landform | ... are topographic features formed by processes that shape Earth's surface.
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| Plain | ... are landforms with low relief and low elevation, as illustrated in Figure 15.
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| Plateau | ... are areas with low relief and high elevation.
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| Mountain | ... are landforms with high relief and high elevation.
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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.
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.
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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