Vocabulary
The envelope of gases that surrounds the planet.
Atmosphere
What is first layer of the atmosphere?
Troposphere
Is air pressure greater at sea level?
Yes
Water vapor condenses to form _____.
Clouds
Name the layers of the atmosphere (in order) :
Troposphere, startosphere, mesosphere, thermosphere, exosphere
The condition of Earths atmosphere at a particular time and place.
Weather
What is the layer of the atmosphere that is about 50 kilometers above Earths surface?
Stratosphere
Air pressure _______ as altitude ______.
Decreases, increases
_____- low level, layers like a blanket, composed of water.
Stratus
What is the most abundant gas in the atmosphere?
Nitrogen
The amount of mass in a given volume of air.
Density
What is the layer that protects Earths surface from meteoroids?
Mesosphere
How can you calculate density?
Mass/Volume
_______- extend through all levels, rain, storm
Nimbus
Where does all weather occur?
L
The troposphere
An instrument that is used to measure air pressure.
Barometer
What layer extends 80 kilometers above Earths surface?
Thermosphere
_______, or elevation, is the distance above sea level, the average level of the surface of the oceans.
Altitude
What cloud has a high level, wispy, curly, composed of ice crystal.
Cirrus cloud
Why do plants and animals need oxygen to survive?
To release energy from food.
The result of the weight of air pushing down on an area.
Air pressure
What are the two layers in the thermosphere?
Ionosphere & Exosphere
As you go up through the atmosphere, the density of the air ________.
Decreases
Are fogs clouds?
Yes, fogs are clouds but just at ground level.
What is air?
The atmosphere used in breathing and photosynthesis.