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Unit Eleven Science Grade Six Flashcards

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1
Q

True or False: Life would be possible without the Earth’s atmosphere.

A

False

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2
Q

True or False: Life would not be possible without the Earth’s atmosphere.

A

True

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3
Q

What are some reasons why life would be impossible without the Earth’s atmosphere?

A

we could not breathe,
too much radiation from the sun and asteroids,
we would freeze at night and burn during the day, and there would be no sound

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4
Q

What gasses make up the atmosphere?

A

nitrogen, oxygen, argon, carbon dioxide, neon, helium, methane, hydrogen, krypton, and water vapor

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5
Q

How much nitrogen is there in the atmosphere?

A

78%

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6
Q

How much oxygen is there in the atmosphere?

A

21%

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7
Q

How much argon is there in the atmosphere?

A

0.9%

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8
Q

How much carbon dioxde is there in the atmosphere?

A

0.04%

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9
Q

The atmosphere there are trace amounts of…

A

neon, helium, methane, hydrogen, krypton, and water vapor

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10
Q

What is what we call how much water vapor is in the atmosphere?

A

humidity

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11
Q

Humidity varies by ________ and __________.

A

places and seasons

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12
Q

Does cold air hold less or more humidity?

A

less humidity

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13
Q

Does warm air hold less or more humidity?

A

more humidity

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14
Q

Greenhouse gases trap what in the atmosphere?

A

heat

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15
Q

What gasses do greenhouses trap in?

A

carbon dioxde

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16
Q

Without the gasses in the greenhouse what would happen to it?

A

the temperature would drop rapidly in the night

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17
Q

Particulates are…

A

solid particles

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18
Q

Particulates are solid particles like _____ and ______.

A

dust, dirt, smoke, and ash

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19
Q

What was 1816 called?

A

the year without a summer

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20
Q

Why was the year of 1816 called the year without a summer?

A

the atmospheric effect of an 1815 volcano in Indonesia

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21
Q

True or False: Air has no mass and volume.

A

False

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22
Q

True or False: Air has mass and volume.

A

True

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23
Q

What is the definition of mass?

A

how much stuff there is (weight)

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24
Q

What is the definition of volume?

A

the amount of space in something

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25
True or False: density=mass divide by volume
True
26
True or False: density=mass x volume
False
27
Since air is a gas do the molecules spread out or are they tight?
spread out
28
Higher Altitudes
less pressure air is less dense
29
Lower Altitudes
more pressure air is more dense
30
Is the air thinner at high altitudes?
yes
31
Is the air thinner at lower altitudes?
no
32
What does warm air do?
rise
33
What does cold air do?
fall
34
True or False: The temperature of the atmosphere changes with altitude.
True
35
How many layers of the atmosphere is there?
four and maybe five
36
What are the layers of the atmosphere from top to bottom?
Exosphere, Thermosphere, Mesosphere, Stratosphere, Troposphere
37
What are the layers of the atmosphere from bottom to top?
Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere
38
Where does the troposphere get its heat from?
Earth's surface
39
The troposphere's temperature ____ with altitudes.
falls
40
Where does the stratosphere get its heat from?
sun
41
The stratosphere's temperature ____ with altitudes.
rises
42
Where does the mesosphere get its heat from?
the stratosphere
43
The mesosphere's temperature ___ with altitudes.
falls
44
Where does the thermosphere get its heat from?
the sun
45
The thermosphere's temperature __ with altitudes.
rises
46
Which layer is the shortest layer in the atmosphere?
troposphere
47
Which layer is the densest layer in the atmosphere?
troposphere
48
Which layer is the lowest layer in the atmosphere?
troposphere
49
How tall is the troposphere?
12km
50
Which layer of the atmosphere is where our weather happens?
troposphere
51
What is the troposphere's top called?
tropospause
52
Where do convection currents happen?
in the troposphere
53
Are convection currents faster or slower in the troposphere, than the mantle?
faster
54
Why is there convection currents in the troposphere?
circulate air in the atmosphere
55
What layer is the stratosphere?
the second layer
56
How tall is the stratosphere?
50 km
57
Which layer has the ozone layer in it?
stratosphere
58
Which layer do planes fly in?
stratosphere
59
Which is the third layer of the atmosphere?
mesosphere
60
How tall is the mesosphere?
85 km
61
What is the top of the mesosphere called?
mesopause
62
What is the temp at the top of the mesosphere?
-100 C
63
What things happen in the mesosphere?
sprite, elves, and meteor showers
64
What is the fourth layer of the atmosphere?
thermosphere
65
How tall is the thermosphere?
600 km
66
Which layer also contains the magnetosphere?
thermosphere
67
What does the magnetosphere protect us from?
solar winds
68
What are the Northern Lights called?
Aurora Borealis
69
What are the Southern Lights called?
Aurora Australis
70
What is above the thermosphere?
exosphere
71
The energy of photon relates to is...
wave length
72
The ______ the wavelength the ______ energy.
shorter and more
73
True or False: Wavelengths corresponds to different colors.
True
74
More energy from the sun get to the equator than the poles. Why?
The sun’s rays are concentrated in a smaller area at the equator than at the poles. and The sun’s rays reach the equator year-round, whereas they do not at the poles.
75
How are winds created?
convection cells
76
What are the 3 main cells?
Hadley cell Ferrel cell Polar cell
77
Hadley cell
Equatorial convection cell with rising warm air at the equator
78
Ferrel cell
Convection cell between Hadley and Polar cells
79
Polar cell
Convection cell with sinking cold air at poles
80
What causes those winds that go north and south at the surface to actually go north-west or south-east or other diagonal directions depending where you are on the globe?
Coriolis effect
81
What are the 3 global winds?
trade winds westlies polar

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