7.9A Earth Systems
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| Atmosphere | show 🗑
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| show | Gas in Earths atmosphere that absorbs most of the damaging high-energy UV radiation from the Sun.
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| show | A portion of the electromagnetic spectrum emitted by the Sun; can cause tanning, sunburns, and skin cancers.
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| show | A continuous stream of charged particles from the Sun, with variations in the stream causing beautiful aurorae displays (northern lights) as well as geomagnetic storms that knock out power grids on Earth.
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| show | Magnetic lines of force from Earth's polar north and south, acting like a giant magnet.
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| show | An area that deflects and traps harmful particles; resulting from an interaction of Earth's magnetic field with solar wind (charged plasma) streaming from the Sun.
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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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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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