D
E
V
I
L
100
Which air is lighter -- cool air or warm air?
warm air
100
VOCABULARY -- a column of wind lifted up on one end by upward winds and pressed down on the other end by downward winds
Tornado
100
What type/temperature of air has gas particles closer together?
cool air
100
What cools more quickly -- land or water?
Land
100
What type of storm has the most destructive winds?
Hurricane
200
What direction do winds generally blow over the United States?
West to East
200
What happens to temperatures as you get further away from Earth?
They decrease
200
VOCABULARY -- measures air pressure
Barometer
200
VOCABULARY -- measures wind speed
Anemometer
200
VOCABULARY -- the average weather conditions for many years BONUS: What do you call weather conditions in one place at one specific time?
Climate BONUS -- weather
300
When 2 air masses of different temperatures come together, what is formed?
Convection current
300
What is the top layer of Earth's atmosphere called?
Exosphere
300
VOCABULARY -- A boundary between 2 air masses
Front
300
VOCABULARY -- A band of very fast wind
Jet stream
300
VOCABULARY -- a large body of air with generally the same temperature and moisture
air mass
400
Where (what layer) do most weather conditions exist?
Troposphere
400
Tell 2 things that can cause a sudden climate change.
--volcanic eruption --meteorite --asteroid
400
What fraction of the air we breathe is nitrogen?
8/10
400
How do air currents move during the 3 stages of a thunderstorm?
1st stage -- Up 2nd stage -- Up & down 3rd stage -- Down
400
VOCABULARY -- a circular current of air
Convection current
500
What do hurricanes get their energy from?
Warm ocean waters
500
What are the 5 layers of the atmosphere -- starting at the Earth?
5) Exosphere 4) Thermosphere 3) Mesosphere 2) Stratosphere 1) Troposphere ------------------- Earth
500
Why do thunderstorms rarely occur in the winter?
The air is NOT warm enough
500
Name and describe the 4 types of air masses
- Continental Polar -- cold & dry - Continental Tropical -- warm & dry - Maritime Polar -- cold & moist - Maritime Tropical -- warm & moist
500
Name 3 ways tornadoes and hurricanes are different.
Tornadoes -- last a few minutes; high winds; hundreds of meters wide Hurricanes -- last days; less strong winds; heavy rains; flooding; huge waves; hundreds of kilometers wide