AnswersOC27 EarthSpace Sci-2001310-S1-NelsonEnergy in the Atmosphere

Lesson 4.2 Energy in the Atmosphere Answers

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1
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Which process causes Earth’s surface to warm?

t
the conduction of heat by air above Earth's surface
t
the radiation of the Sun’s electromagnetic waves
t
the convection of warm air from the atmosphere
t
the reflection of electromagnetic waves off bodies of water
2
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How do ice and water on the ground affect incoming solar radiation?

T
They filter 22 percent of solar radiation that reaches the surface.
T
They reflect 4 percent of solar radiation that reaches the surface.
T
They absorb 100 percent of solar radiation that reaches the surface.
T
They scatter 5 percent of solar radiation that reaches the surface.
3

Which color of visible light has the shortest wavelength?

g
green
r
red
v
violet
y
yellow
4

How does convection occur in the troposphere?

T
The Sun’s rays heat Earth’s surface.
W
Warm air rises and cool air sinks.
T
The warm ground heats the air above it.
T
The Sun’s electromagnetic waves reflect off clouds.
5

What percent of solar radiation is filtered by clouds and may cause sunburn on cloudy days?

3
3 percent
1
14 percent
2
22 percent
3
31 percent
6

Why is the sky orange and red at sunrise and sunset?

G
Gases absorb orange and red light.
B
Blue wavelengths are absorbed by the atmosphere.
T
The thick atmosphere scatters all but longer wavelengths.
O
Only short wavelengths are radiated from the Sun in the morning and evening.
7

Which part of Earth most likely has the highest albedo value?

s
smooth ocean ice when the Sun is at a 30-degree angle
s
smooth ocean ice when the Sun is at a 15-degree angle
c
choppy ocean water when the Sun is at a 30-degree angle
c
choppy ocean water when the Sun is at a 15-degree angle
8

What happens to the particles of a substance as its temperature increases?

T
They move faster.
T
They move slower.
T
They lose some energy.
T
They move in a circular direction.
9

How do the magnetic and electrical components of electromagnetic waves travel in relation to each other?

a
at right angles
t
toward each other
i
in a circular motion
p
parallel to each other
10

What causes different colors to appear in the sky?

t
the absorption of light by air molecules
t
the reflection of light by bodies of water
t
the greenhouse effect in Earth’s atmosphere
t
the scattering and reflection of light by dust particles

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