NUMS - Grade 7 Science - Chapter 3 - Sections 1 and 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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| Air Mass | A huge body of air that has similar temperature, pressure, and humidity throughout.
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| Anticyclone | A high pressure center of dry air.
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| Continental | A dry air mass that forms over land.
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| Cyclone | A swirling center of low air pressure.
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| Flash Flood | A sudden, violent flood that occurs within a few hours, or even minutes, of a heavy rainstorm.
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| Front | The area where air masses meet and do not mix.
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| Maritime | A humid air mass that forms over oceans.
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| Occluded | Cut off, as the warm air mass at an occluded front is cut off from the ground by cooler air beneath it.
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| Polar | A cold air mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high air pressure.
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| Tropical | A warm air mass that forms in the tropics and has low air pressure.
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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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