Originated from Indo-European word “we” meaning wind,
and “vydra” meaning storm
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What is a cold front?
An air mass sliding underneath the warm air and pushing it away
Creates clouds, strong winds, and rain
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What is the troposphere?-
We live here, closest to the earth
7 miles high
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What is a thunderstorm?
Must have moisture
Produce lightning, rain and wind
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What is wind?
Movement of air across the atmosphere
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Where and when were the first weather observations made?
500 BCE in Greece
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What is a warm front?
Air moves in over a cold front
Creates gentle winds and light rain
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What is the stratosphere?-
Hot air balloons and planes fly here
-Top of thunderstorms reach here
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What is a hurricane?
Major tropical storms
Evaporation from salt water increases the power of the storm
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What is the jet stream?
Band of high-speed winds in the upper troposphere that blows or travels from West to East
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What is weather and climate
Weather is happening right now, and climate is weather over a long period of time.
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What is a stationary front?
Cold and warm fronts meet
often Clouds will form, but this front hangs around giving it its name
Weather generally stays the same but when the masses move the weather changes
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What is Mesosphere?-
Meteorites burn here
-Shooting stars fly here
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What is a tornado?
It is a fiercely rotating column of air that comes from the air onto the ground
Its rotation comes from a change in the wind direction and increased wind speed
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How is wind measured?
You use the Beauford scale, the wind speed, which is determined by the anometer, the smaller the wind speed, the smaller the number on the Beauford scale
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What is a cloud made of?
Made of tiny drops of water surrounded by dust particles.
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What is the color of clouds?
Reflect the light from sun
All of the colors of the rainbow reflected equally, they look white
if too many collect together, black out light, turn grey
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What is Thermosphere?
-Northern and southern lights are here
-Temperature is thousands of degrees Fahrenheit
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What is a blizzard?
Strong winds
Large amounts of snow
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What is air pressure?
Air in the atmosphere pressing down on Earth’s surface
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How do clouds form?
The water vapor close to the ground rises, cools and expands, water droplets gather around dust particles. When they cool down, they can’t hold as much water, it rains.
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What is movement of clouds vs. floating of clouds?
Move- pushed along with air
Float-stay warmer than air
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What is the Exosphere?-
Satellites are here
-Boundary between earth and space
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What is a sandstorm?
Tops layers of loose sand whipped up by strong winds in dry, desert areas
Clouds of dust form a cloud about 20 in. above the ground