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Earth's Atmosphere Flashcards | StudBud
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Earth's Atmosphere
Earth's Atmosphere
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Designed for the Atmosphere Unit of the Virginia Earth Science course.
Flashcards
32 cards
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Practice quiz
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Questions
32
Answers
1
Why is the equator always hot and the poles always cold?
Earth's surface is curved; equator's energy is more direct
equator gets more direct energy since Earth is flat
polar regions lose their energy due to higher altitudes
equator is closer to the sun
2
According to the table shown, which ball has the lowest density?
Y
Z
They all have equal densities.
X
3
What effect do CFCs have on Earth's atmosphere?
they add ash and dust to the atmosphere, cooling it
they contribute to smog formation
as greenhouse gases, they contribute to climate change
they break down ozone in the stratosphere
4
This energy transfer method describes how the troposphere is warmed directly by Earth's surface
radiation
convection
conduction
condensation
5
Meteorite impacts may cause large amounts of _______ to enter the atmosphere, cooling climate.
methane
leaves
dust and ash
carbon dioxide
6
According to the diagram shown, which object has the greatest ratio of mass to volume?
X
Y
Z
They all have equal ratios.
7
What is the percentage of oxygen in Earth's modern atmosphere?
21%
less than 1%
1%
78%
8
In which layer of the atmosphere does weather occur?
stratosphere
troposphere
mesosphere
thermosphere
9
What is the main source of carbon dioxide thought to be causing climate change?
cellular respiration
combustion of fossil fuels
release of CFCs through aerosols and refrigerants
combustion of forests
10
In which layer of the atmosphere do meteors usually burn up?
thermosphere
stratosphere
mesosphere
troposphere
11
Which gas is most abundant in Earth's modern atmosphere?
argon
oxygen
nitrogen
carbon dioxide
12
Land and sea breezes occur due to
land heating and cooling slower than water
the sun's energy being less concentrated during the day
the sun's energy being less concentrated at night
water changing temperature more slowly than land
13
List the four main layers of the atmosphere in order from low to high altitude.
stratosphere, thermosphere, mesosphere, troposphere
troposphere, stratosphere, mesosphere, thermosphere
thermosphere, stratosphere, mesosphere, troposphere
thermosphere, mesosphere, stratosphere, troposphere
14
What was the source of gases for Earth's second atmosphere?
volcanic outgassing
the sun
blue-green algae
animals
15
Which biological process removes carbon dioxide from the atmosphere?
oxygen
condensation
photosynthesis
respiration
16
In which layer of the atmosphere do auroras form?
stratosphere
thermosphere
mesosphere
troposphere
17
Which of the following air masses would exert the highest pressure? Degrees are Fahrenheit.
65 degrees
30 degrees
92 degrees
80 degrees
18
Which stage of Earth's atmospheric development is represented by the diagram shown?
This was never Earth's atmosphere
2nd Stage
1st Stage
3rd Stage
19
Which stage in the development of Earths atmosphere is represented by the image shown?
Stage 3
Stage 1
This is not a stage in development of the atmosphere
Stage 2
20
What is the largest reservoir on Earth for carbon dioxide?
plants
the atmosphere
the ocean
rocks
21
The layer of gases that surrounds Earth is called its
lithosphere
biosphere
atmosphere
ocean
22
What is the role of radiation in Earth's atmosphere?
the main way energy is transferred within the atmosphere
it's how energy warms the troposphere from Earth's surface
it's how energy arrives from the sun
it's how energy is transferred from land to water
23
How may volcanic eruptions affect the atmosphere?
add a lot of gases and ash
add a lot of carbon dioxide
add a lot of heat
add a lot of oxygen
24
How long ago did the atmosphere form?
15 million years ago
4.6 billion years ago
4.6 million years ago
15 billion years ago
25
Pressure in the atmosphere ______________ as you move from the troposphere to the thermosphere.
increases
increases, then decreases
decreases, then increases
decreases
26
Compared to Earth, the atmosphere of Venus is much ______.
thinner, and mainly carbon dioxide with no oxygen
thinner, and mainly carbon dioxide with little oxygen
thicker, and mainly carbon dioxide with no oxygen
thicker, and mainly methane with no oxygen
27
Wind always flows from _____ to _____.
high altitude to low altitude
high pressure to low pressure
low altitude to high altitude
low pressure to high pressure
28
What is the name of the biological process that adds oxygen to the environment?
oxygen
cyanobacteria
respiration
photosynthesis
29
Cyanobacteria are thought to be responsible for which atmospheric gas?
methane
nitrogen
oxygen
carbon dioxide
30
In which atmospheric layer is ozone most abundant?
thermosphere
troposphere
mesosphere
stratosphere
31
What is the main mechanism for energy transfer in the troposphere?
radiation
convection
transpiration
conduction
32
What happens to sea level if glaciers melt?
sea level will rise
sea level will begin to fluctuate more
sea level will fall
sea level will not be affected
