The Atmosphere Review Chapter 3 Water and the Atmosphere
The amount of __________in the air varies greatly from place to place andtime to time. A molecules B water vapor C properties D airplanes
Gases in air that are present in very small amounts are called ____________gases A small B tiny C trace D insignificant
Earth is surrounded by an envelope of gases called the _____________. A atmosphere B ionosphere C sphere of air D crust
Clouds form when water vapor ________ out of the air. A vaporize B evaporates C precipitates D condenses
The term used to describe the condition of Earth’s atmosphere at a given place ortime is ___________. A Air pressure B Weather C Forecast D Climate
What do dust, smoke, salt, andchemicals have in common? a They are gases in air. b They make up water vapor in air. C They are particles in air. d They are found only in pure air.
Which of these does a fire need toburn? a argon b carbon dioxide C nitrogen d oxygen
Which of these do plants need tomake food? a argon b carbon dioxide C nitrogen d oxygen
Which of these makes up about21 percent of the atmosphere? a argon b carbon dioxide C nitrogen d oxygen
True or False To calculate the density of a substance divide its mass by itsweight.
True or False The higher the altitude, the lower the air pressure
True or False As altitude increases, the density of the air increases.
True or False Air pressure is the result of the weight of a column of airpushing on an area.
Air pressure at sea level is __________ than air pressure at the top of amountain. A the same B higher C lower D colder
The amount of mass in a given volume of air is its __________. A density B weight C pressure D volume
Air pressure doesn’t crush you because molecules in air push __________. A in one direction B in two directions C up D in all directions
True of False The troposphere is thickest over the equator.