Terms in this set (50)
What are the parts of Earth's atmosphere?
Thermosphere, Mesosphere, Stratosphere, and Troposphere.
Where did Earth's atmosphere come from?
When Earth began to solidify about 4.4 billion years ago, volcanic eruptions released variety of gases. The process called outgassing created the atmosphere.
Which part of the atmosphere do we live in?
Why does the stratosphere get warmer with increasing altitude?
The ozone layer in the stratosphere absorbs solar radiation.
Why does the ionosphere allow radio signals to travel farther at night?
At night, ion density is lower because fewer solar rays pass through the ionosphere. They can go higher in the atmosphere before being bounced back by ionized particles.
How does life on Earth benefit from ozone in the upper atmosphere?
Protects living things on Earth from much of the sun's radiation.
How does the Greenhouse effect work?
Certain atmospheric gases keep Earth warm by absorbing radiation from the sun and returning it to Earth.
The lowest layer in the atmosphere, in which temperature drops at constant rate as altitude increases. Densest. Clouds, wind, rain, and snow happen there.
The layer of the atmosphere that lies between the troposphere and the mesosphere. Temperature increases as altitude increases. Contains the ozone layer. Lack of water vapor, contains few clouds and no storms.
Coldest layer of the atmosphere. Between the Stratosphere and Thermosphere. Temperature decreases as altitude decreases.
The top layer of the atmosphere. Temperature increases as altitude increases. Very hot.
The warm atmosphere releases some of this energy in the form of radiation and some of it warms Earth's surface.
What happens to water in the troposphere?
Evaporation, transpiration, condensation, and precipitation.
What is air pressure, and by what terms is that also known?
The weight of Earth's atmosphere pressing down on everything on Earth. AKA atmospheric pressure and barometric pressure.
What causes wind?
The difference in pressure from one point on the earth's surface to another.
What are clouds made from?
Made of tiny droplets of liquid water
What does the height of a mercury barometric indicate?
The continuously movement of water between the atmosphere, land, and oceans.
Process in which plants release water vapor into the air.
Any form of water that falls to Earth's surface from the clouds.
Amount of moisture in the atmosphere.
The temperature when the rate of condensation equals the rate of evaporation.
The way Earth's rotation makes winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left.
How do fronts affect the weather?
It can cause clouds, rain, and snow. Precipitation and a change in wind direction and temperature.
How is climate different from weather?
Weather changes from day to day. Climate is the average weather of a region.
What kind of weather typically results from a cold front?
High winds and thunderstorms.
What is the source of the tremendous amount of energy released in a hurricane?
The condensation of rising moist air.
A large body of air throughout which temperature and moisture content are similar.
Boundary between where a cold air mass and a warm air mass meet.
Average weather of a region and is measured over many years.
The rise and fall of a land surface.
Explain how carbon dioxide in the atmosphere relates to the greenhouse effect
Carbon dioxide in the atmosphere allows the sun's rays to enter, but prevents much of the infrared radiation from escaping. The radiation builds up heat instead in the greenhouse gases. This warming is called the "greenhouse effect", because the same sort of thing happens in a greenhouse
How is the ozone formed
The sun's uv rays strike molecules of 02 which break apart. The single atoms of oxygen bond with 02 molecule to make ozone03. It then absorbs much of the sun's damaging uv radiation.
Describe the formation of a warm front
A mass of warm air moves towards over a slower, denser mass of cold air.
Explain the difference between weather and climate.
Weather changes from day to day. Climate is measured over many years.
Describe the relationship between air, temperature, and humidity
warm air is usually more humid than cold air
How does a storm become a hurricane
Hurricanes form when the warm water evaporates and the water vapor rises. The intense low pressure ares are called tropical depressions. Hurricanes are powered by the energy released as water vapor condenses to form clouds.
Describe the water cycle
Precipitation, condensation, transpiration, and evaporation all make it up. It is when water is continuously being moved through the troposphere.
Almost all of the water vapor in the atmosphere is in the
Clouds form when water vapor in the air condenses as
The air is cooled.
Chemicals that are used as refrigerants and as propellants in spray cans, are partly to blame for the reduction of stratospheric
Winds in the Northern Hemisphere curve clockwise because of the
Cumulonimbus and nimbostratus clouds both
What is a temperature inversion
When cool air gets trapped beneath warm air.
Explain the differences in seasons between the Northern Hemisphere and the Southern Hemisphere
Northern Hemisphere is north of the equator, cold around the holidays in winter. Hot in summer. Southern Hemisphere
Because of dew point, why might you find small droplets of water on grass early in the morning
When the humidity, there is more water vapor in the air, so the water vapor can easier be condensed to liquid water. Higher humidity, higher dew point.
Describe the two common types of barometers
Aneroid and mercury
Which instrument would a meteorologist use to measure weather data from the upper atmosphere
what conditions are necessary for a formation of a tornado
when a moving warm air mass encounters a mountain range the air mass
rises and cools
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