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Weather Unit Review

An instrument that measures temperature, either in Celsius, Fahrenheit or Kelvin is called a .......... thermometer
An instrument that measures air pressure, changes in air pressure that indicate changes in weather are coming is called a...... barometer
Two types of barometers are..... Aneroid and Mercury Barometers
Which instrument would you use to measure wind speed? anemometer
Which instrument would you use to measure wind direction? weather vane
What is the name of the person that studies weather? meteorologist
You would use this type of instrument to measure the relative humidity in the air. It will tell you is it is wet or dry. psychrometer/hygrometer
Scientists use this instrument to measure how much rain has fallen. rain guage
The study of weather is called..... meteorology
Any form of water that falls to the Earth; Rain, sleet, hail, or snow precipitation
During winter storms, when rain falls from the clouds and freezes as it is falling it is called...... sleet
What type of precipitation falls when wind moves an ice crystal back up into a cloud several times before it falls to the ground? hail
This occurs every 3-7 years when trade winds weaken causing the Pacific Ocean to become warmer and bringing unusually heavy rains to the Southeastern U.S. El Nino
The Atlantic Ocean current, originating in the Gulf of Mexico that influences weather on the northeastern coast of the U.S. and England. Gulf Stream
Thin, white, feathery, high altitude clouds that contain ice crystals are called.... Cirrus
Layered clouds that produce steady, light precipitation. Stratus
Puffy white clouds that are often in the sky during fair weather. Cumulous
The boundary between a cold air mass and a warm air mass. front
What type of front forms when a warm air mass pushes a cold air mass and slips over the cold air? warm front
What does "H" represent on a weather map? high pressure
What type of weather would you expect to have if you "H" on a map? fair weather
A storm that develops when low pressure forms over the warm ocean water with winds blowing more than 74 MPH. hurricane
A violently rotating column of air stretching from a cloud to the ground that is often spun from a severe thunderstorm. tornado
A front in which cold air is replacing warm air at the surface. Usually bring cooler weather, clearing skies, and a sharp change in wind direction. cold front
A front in which warm air replaces cooler air at the surface. After the front, the area experiences warm weather. warm front
When two cool air masses cut a warm air mass off from the ground, which kind of front forms? occluded front
This type of front is a boundary between two air masses that are not moving. They bring precipitation which can lasts a few days. stationary front
This type of air mass forms over the tropics, so they are warm and will have low air pressure. tropical
This type of air mass forms north/south of 50º latitude. So they are cold and will have high pressure. polar
This type of air mass forms over the oceans so they are humid. maritime
This type of air mass forms over the middle of continents (land) so they are dry. continental
All winds are caused by differences in....... air pressure
The flow of air from land to a body of water is called a........ land breeze
The flow of air from the sea to land is called..... sea breeze
In what direction do air masses generally move in the US? west to east
Created by: mrs.verano