science ch. 15 exam
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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| atmosphere | a mixture of gasses that surrounds the Earth
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| troposphere | the lowest, densest layer of the atmosphere
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| stratosphere | the atmospheric layer above the troposphere
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| mesosphere | the middle layer of the atmosphere. It is also the coldest layer.
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| thermosphere | uppermost layer of the atmosphere
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| Why does wind occur? | differences in air pressure caused by unequal heating of the earth
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| We breathe mostly... | oxygen
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| Know the diagram of winds and the degrees in which they fall | *See book
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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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