7th grade: Atmosphere and Space
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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| how many layers are there in the atmosphere? | five
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| which layer is nearest to the Earth where the weather occurs? | troposphere
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| in which layer do jets fly the most? | stratosphere
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| which layer protects the earth from ultraviolet radiation from the sun? | ozone
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| which layer is the coldest layer of the atmosphere and where meteors burn up? | mesosphere
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| which layer is the hottest layer of the atmosphere? | thermosphere
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| which layer is the outermost layer of the atmosphere? | exosphere
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| which gas is most abundant in the Earth's atmosphere? | nitrogen
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| what causes wind? | uneven heating and cooling air; heat rises and cool air sinks
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| what is a convection current? | the up and down air motion
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| what is an orbit? | a curved path that an object takes around a larger object
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| What orbits the Earth? | the moon, space craft and satellites
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| what is gravity? | the force of attraction between two objects
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| what is velocity? | speed in a given direction
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| what is centripetal force? | force that makes an object move in a circular pattern
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| what is orbital velocity? | the speed and direction that an object must maintain to stay in orbit
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| what two properties change with altitude? | air pressure and air temperature
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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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Created by:
mharlan
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