1. What are the layers of the atmosphere?
A. Troposphere, Stratosphere, Lithosphere, Hydrosphere, Exosphere B. Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere C.Troposphere, Hydrosphere, Biosphere, Lithosphere, Exosphere
D. Biosphere, Ionosphere, Lithosphere, Hydrosphere

2. What is the layer of the atmosphere closest to the earth's surface?
A.Troposphere
B.Mesosphere
C.Stratosphere
D.Thermosphere

3.It is the layer of the atmosphere where meteors and rock fragments burn up.
A.Trosposphere
B.Mesosphere
C.Stratosphere
D.Thermosphere

4.What accounts for the rising and sinking of air?
A.Uneven heating on the earth's surface.
B.Rotation of the earth on its axis.
C.Difference in the pressure at atmosphere's layers.
D.Presence of land and water forms on earth.

5.What is the difference between weather and climate?
A.Weatheris the condition of the atmosphere over a short period of time,and climate is how the atmosphere "behaves" over relatively long periods of time.
B.Climate is the condition of the atmosphere over a short period of time,and weather is how the atmosphere "behaves" over relatively long periods of time.
C.Climate can change from minute-to-minute or hour-to-hour while weather can change from day-to-day or season-to-season
D.Weather is the average of climate over time and space.
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