Clouds
Severe Weather
Air Masses
Winds
Other
100
This type of cloud is thick and puffy, like a heap of cotton balls.
Cumulus
100
Where do hurricanes usually form?
Over warm, moist ocean waters, off the coast of Africa.
100
What is known as the boundary between 2 air masses?
A Front
100
Which is a current of wind found 6 miles above the ground and blows fast around the globe?
Jet stream
100
This is when the water in the eastern Pacific Ocean is unusually warmer than normal. It causes flooding in the western USA and S. America.
El Nino
200
This type of cloud is thin and wispy. It is found high in the atmosphere and is usually made of ice crystals.
Cirrus
200
Where are Tornadoes most likely to occur?
Over flat ground, typically in the middle states of the USA, known as Tornado Alley.
200
Where is air pressure greater - at sea level or on top of a mountain?
sea level
200
These winds blow weather in the USA from west to east. They blow all of the time.
Prevailing Westerlies
200
The molecules in warm air spread out and cause it to rise. This is because warm air is ________ _________.
less dense
300
This type of cloud covers most of the sky like a blanket. They are found in the lower atmosphere. They can cause overcast skies.
Stratus
300
Which has winds that reach up to 300 mph? Hurricanes or Tornadoes?
Tornadoes
300
Which pressure system brings fair, sunny weather?
High pressure system
300
What is it called when air moves due to warm air rising and cooler air sinking?
Convection Cell
300
How does the atmosphere help the earth?
It protects us from harmful UV rays, it helps regulate temperatures, and provides us with air to breathe.
400
This means "rain". These clouds are dark and gray.
Nimbus or Nimbo
400
Which type of severe weather brings a dangerous storm surge?
Hurricanes
400
Which type of front occurs when a cold air mass moves in under a warm mass of air?
cold front
400
What do we call the area near the equator where little or no winds blow - it is calm there most of the time?
Doldrums
400
What is the layer closest to the earth called? It is where all weather occurs.
Troposphere
500
This cloud is found near the ground. It's caused when warm water in/on the ground has been cooled quickly after it has evaporated.
Fog
500
Which type of severe weather is predicted early, but causes more costly destruction, due to the fact that it is so widespread?
Hurricanes
500
Which pressure system brings wind, clouds, and possible storms? This is where hurricanes form over the warm oceans, too.
Low pressure system
500
What do we call it when winds curve, due to the spinning of the earth?
Coriolis Effect
500
What instrument is used to measure humidity?
hygrometer or psychrometer
M
e
n
u