CHAPTER 22 SECTION 1 VOCABULARY AND QUESTIONS
*Atmosphere- a mixture of gases that surrounds a plant such as earth.
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QUESTIONS
1. Describe the composition of dry air at sea level.
-Oxygen, Carbon dioxide, varying amounts of dust and pollen, trace gases such as methane,ozone, hydrogen,carbon monoxide.
2. Identify five main components of the atmosphere.
-nitrogen, oxygen, water vapor, ozone and particulates.
3. Explain the cause of atmospheric pressure
-is caused by the weight of air molecules as elevation increases, fewer air molecules are present. Therefore, atmosphere pressure always decreases with increasing height.
4. Explain how the two types of barometers measure atmospheric pressure.
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5.identify the layer of atmosphere in which weather occurs.
-weather happens in the troposphere.
6.compare the four main layers of the atmosphere.
- troposphere contains more of the earths atmosphere than the other layers. the stratosphere is the layer where most jet airplanes fly in. Ozone layer that absorbs the harmful UV rays from sun in this layer The mesosphere is the coldest layer of the atmosphere as altitude increases, temperature decreases. meteors burn up in this layer. the hemosphere contains the ionosphere which aids in propagation of radio signals over great distances hottest layer of the atmosphere
7. Identify the two atmospheric layer that contain air as warm as 25*C
-two atmospheric layers that contain air as warm as 25*C are the Themosphere, and the Stratosphere.
LAYERS OF THE ATMOSPHERE
THERMOSPHERE
temperature; INCREASES, 2,000*C at top
Characteristics;
1.temps get up to 2000*C
2.air molecules are 1 km apart!
temperature; INCREASES, 2,000*C at top
Characteristics;
1.temps get up to 2000*C
2.air molecules are 1 km apart!
MESOSPHERE
temperature; DECREASES, -100*C
Characteristics;
1. protects earth from meteors
2. coldest region of atmosphere
temperature; DECREASES, -100*C
Characteristics;
1. protects earth from meteors
2. coldest region of atmosphere
STRATOSPHERE
temperature: INCREASES, to about -20*C
Characteristics:
1. contains most of atmosphere's ozone
2. where jets and manned balloons have gone
temperature: INCREASES, to about -20*C
Characteristics:
1. contains most of atmosphere's ozone
2. where jets and manned balloons have gone
TROPOSPHERE
temperature; DECREASES, 6.5*C per km
Characteristics: to about -60*C
1. most weather occurs here where we live
2. convection currents
temperature; DECREASES, 6.5*C per km
Characteristics: to about -60*C
1. most weather occurs here where we live
2. convection currents
MAGNETOSPHERE
Characteristics;
1. Earth's magnetic field
2. causes aurora borealis
(Northern Lights)
Characteristics;
1. Earth's magnetic field
2. causes aurora borealis
(Northern Lights)
EXOSPHERE
Characteristics:
1.upper part of thermosphere
2.artificial satellites orbit here
Characteristics:
1.upper part of thermosphere
2.artificial satellites orbit here
IONOSPHERE
Characteristics:
1, lower part of thermosphere
2. Radio waves bounce back to
Earth's surface
Characteristics:
1, lower part of thermosphere
2. Radio waves bounce back to
Earth's surface
OZONOSPHERE
Characteristics:
1. Ozone is made of 3 oxygen atoms
2. protects the surface from sun's UV rays
3. Humans are causing Ozone depletion
Characteristics:
1. Ozone is made of 3 oxygen atoms
2. protects the surface from sun's UV rays
3. Humans are causing Ozone depletion
1. list the four main layers.
-exosphere, ionosphere , ozonesphere, magnetosphere
2. list the four minor layers
-thermosphere, mesosphere, stratosphere, troposphere
3.which two minor layers of parts of a main layer?
-ionosphere and exosphere
4.which layers is the most important to you and why?
-troposphere __ this is where we live
5.what two layers protect you?
-Mesosphere and Stratosphere
6. which layer acts like a giant magnet? what does it attract?
-magnetosphere_ due to the field around the earth which attracts particles and keeps us safe
7. what does the air in the troposphere do as it heats up from the sun
-it gets warmer
8. what cloud indicates the top of the troposphere ?
-cirrus and cumvlonimbus
9.what runs along the top of the troposphere?
-the jetstream
10. what attaches itself to this jetstream and, in a sense , tells you stratosphere begins?
-the troposphere
-exosphere, ionosphere , ozonesphere, magnetosphere
2. list the four minor layers
-thermosphere, mesosphere, stratosphere, troposphere
3.which two minor layers of parts of a main layer?
-ionosphere and exosphere
4.which layers is the most important to you and why?
-troposphere __ this is where we live
5.what two layers protect you?
-Mesosphere and Stratosphere
6. which layer acts like a giant magnet? what does it attract?
-magnetosphere_ due to the field around the earth which attracts particles and keeps us safe
7. what does the air in the troposphere do as it heats up from the sun
-it gets warmer
8. what cloud indicates the top of the troposphere ?
-cirrus and cumvlonimbus
9.what runs along the top of the troposphere?
-the jetstream
10. what attaches itself to this jetstream and, in a sense , tells you stratosphere begins?
-the troposphere