Atmosphere and Air pressure
____________ is what the air outside is like at any given time and place.
weather
What is the gas form of water?
water vapor
Movement of air is called __________.
wind
The place where two air masses meet
front
A large storm that forms over the ocean
hurricane
the weight of air as it presses on objects below or within it
air pressure
When water changes from gas to liquid it is called________?
condensation
A large body of air in the atmosphere is called _____________.
air masses
__________ is the weather patterns in a place over a long period of time.
climate
Winter storm that is very windy and with a lot of snow
Greatest hazard:
blizzard. Greatest hazard: Cause power outages, roads to close
Air contains mostly __________ gas.
nitrogen
___________ is the measure of how much water vapor the air in a place contains.
humidity
The direction from which air moves when wind blows
wind direction
Name the 4 seasons.
summer, fall, winter, spring
A rotating column of air that extends from a cloud and move along the ground
Greatest hazard:
tornado. Greatest hazard: destructive winds tear down homes and buildings.
The higher up in the atmosphere, the (lower/higher) the air pressure is.
lower
When water changes from liquid to gas it is called____________? What causes it to change?
Evaporation. Energy from the sunlight cause water to evaporate.
_____________ is how fast wind blows over a certain distance and time
wind speed
Describe a meteorologist’s job.
-Studies weather conditions and patterns. Use data and computers to find patterns and predict weather as accurate as possible.
A long period of weather with less precipitation than normal
drought. Greatest hazard: Food shortages, wildfires
The skies are usually clear and sunny when the air pressure is (high/low)
high
Name 4 types of precipitation
rain, snow, sleet, hail
What causes wind?
When a high-pressure air mass comes in contact with a low pressure mass, the high-pressure air moves to the low pressure.
What causes seasons?
The earth’s tilt toward the sun.
Engineers design solutions for extreme weather hazards using the engineering design process. Name the steps of the process.
1.Define the problem. 2. Plan a solution. 3. Make a model. 4. Test the model. 5. Evaluate and design.