Atmosphere (Isabella)
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1
What is the atmosphere?
The thin envelope of gasses that surround the planet
2
What is air pressure?
the pressure caused by the weight of a column of air pushing down on an area
3
What is altitude?
elevation from sea level
4
Which gas makes up 78% of the atmosphere?
nitrogen
5
Which gas makes up 21% of the atmosphere?
oxygen
6
Which gas make up the remaining atmosphere
argon, carbon dioxide, methane, and ozone
7
Not including nitrogen/oxygen, what do the other elements in the atmosphere do?
trap the heat from the sun to insulate the earth
8
What are the four layers of the atmosphere?
thermosphere, stratosphere, mesosphere, troposphere
9
Which layer is the uppermost and has the lowest density of air?
thermosphere
10
True/False: Mesosphere protects earth from meteorites
True
11
Which layer has the ozone layer?
Stratosphere
12
True/False: Weather occurs in the stratosphere?
no; occurs in troposphere
13
How does altitude affect air pressure?
higher altitude = less air pressure since less gravity to pull air particles down on an area
14
What is precipitation?
any form of water that falls from the clouds and reaches Earth’s surface as rain, snow, sleet, or hail
15
True/False: Transpiration is the process of molecules on the surface of a liquid becoming a gas
False; evaporation
16
What is the change in state from a gas to liquid?
condensation
17
True/False: Transpiration is the process by which water is lost through a plant’s leaves
True
18
What is respiration?
Everytime a person or animal breathes out they release water vapor
19
What are three ways that water vapor enters the atmosphere?
transpiration, evaporation, respiration
20
True/False: Condensation is a method where water enters into the atmosphere.
False
21
What is humidity?
measure of the amount of water vapor that is in the air
22
True/False: A meteorologist studies meteors.
False; they study and predict weather
23
What is an air mass?
a huge body of air that has similar temperature, humidity, and air pressure at any given height
24
What is a front?
boundary where unlike air masses meet but don’t mix
25
How does a cold front form?
cold air mass + warm air mass
26
What can a cold front cause?
heavy rain, winds, thunderstorms, and tornadoes
27
How does a warm front form?
fast moving warm air mass overtakes a slow cold air mass
28
What can a warm front cause?
light rain, snow; clouds can be up for days
29
How does an occluded front form?
warm air mass gets caught between two cold air masses forming it
30
What can an occluded front cause?
clouds to gather; rain and snow may fall
31
How does a stationary front form?
sometimes cold and warm air masses meet, but neither move one another
32
What can a stationary front cause?
many clouds and sometimes precipitation
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