Earth science - units 13-14 test plz

1. is constantly changing, and it refers to the state of the atmosphere at any given time.
a. climate
b. weather
c. humidity

2. which of the following makes up the largest portion of the atmosphere?
a. nitrogen
b. oxygen
c. water vapor

3. in what way do humans contribute to airborne pollution?
a. driving cars
b. energy production
c. industrial processes
d. all of the above

4. which layer of the atmosphere is the layer that surrounds earth and that weather occurs in?
a. troposphere
b. mesosphere
c. stratosphere

5. the spinning of earth on its axis is called .
a. revolution
b. rotation
c. precession

6. the of earth causes seasonal variations in the northern and southern hemispheres.
a. rotation
b. tilt
c. precession

7. what type of heat transfer causes circulation within a fluid as the air or liquid rises when it warms and sinks as it cools.
a. conduction
b. convection
c. radiation

8. which heats faster, land or water?
a. land
b. water

9. which of the following can affect the temperature of an area?
a. altitude - how high up the location is
b. geography - how close it is to water or mountains
c. latitude - how far north or south of the equator it is
d. all of the above

10. (2 points) what two factors can affect humidity? pick two
a. increasing the air pressure
b. change in temperature
c. changes in wind direction
d. adding or removing water vapor

11. what must be present for water vapor to condense to form a cloud?
a. precipitation
b. mountains
c. condensation nuclei

12. orographic lifting involves that act as a barrier to air, causing it to rise.
a. a cold front
b. a pocket of warm air
c. mountains

13. what causes surface wind?
a. differences in air pressure
b. rotation of earth
c. friction

14. what type of pressure center is associated with bad weather?
a. high pressure
b. low pressure

15. what type of air mass is characterized by low moisture and warm temperatures.
a. maritime tropical
b. maritime polar
c. continental tropical

16. which of the following are considered to be the most powerful storms on earth?
a. mid-latitude cyclones
b. tornadoes
c. hurricanes

plz you