7Th Grade Science-Atmosphere

Front 1

What is the layer of gases that surround the Earth?

Back 1

ATMOSPHERE

Front 2

The 2 most abundant gases in the atmosphere are ?

Back 2

nitrogen and oxygen

Front 3

Earth's atmosphere has 4 times more ______ as it does _____.

Back 3

NITROGEN
OXYGEN

Front 4

Aside from nitrogen and oxygen, gases make up what percentage of dry air?

Back 4

1%

Front 5

What is a form of oxygen with 3 oxygen atoms in each molecule?

Back 5

ozone

Front 6

Water vapor is-water in the form of what?

Back 6

A GAS

Front 7

The less mass in a given volume of the more or less dense the air?

Back 7

Less dense the air

Front 8

Why does air in the atmosphere have pressure?

Back 8

Air has mass

Front 9

How can density be determined?

Back 9

Density= Mass/Volume

Front 10

When water combines with ____ ___you get one of the acids in acid rain.

Back 10

sulfur oxides

Front 11

Photochemical smog comes from the interactio of pllutants in the presence of __________.

Back 11

sunlight

Front 12

A fine powdery material produced by many plants is called what?

Back 12

POLLEN

Front 13

Where does most pollution in the atmosphere come from?

Back 13

Burning fossil fuels

Front 14

Which layer in the atmosphere where weather occurs.

Back 14

troposphere

Front 15

When you climb a mountain, why do you tend to get out of breath as you climb higher?

Back 15

there is less oxygen in each cubic meter

Front 16

How is an aneroid barometer different from a mercury barometer?

Back 16

Does not contain a liquid

Front 17

What are instruments called that measure air pressure?

Back 17

BAROMETER

Front 18

How does the National Weather Service measure air pressure ?

Back 18

In units called MILLIBARS

Front 19

What are the main layers in our atmosphere from Earth to space?

Back 19

Troposphere
Stratosphere
Mesosphere
THermosphere
(a sentence that might help is "Tell Soldiers Many THanks"

Front 20

When the air pressure increases what happens to the column of mercury in a barometer?

Back 20

IT RISES

Front 21

As the mass increases in density what happens to the air?

Back 21

The volume of air INCREASES TOO.

Front 22

When nitrogen oxides react with other air pollutants in the prescense of sunlight, what forms?

Back 22

PHOTOCHEMICAL SMOG

Front 23

Dry air is composed of 78% oxygen and 21% ____ .

Back 23

Oxygen

Front 24

Radio waves are reflected back to Earth in ______?

Back 24

IONOSPHERE

Front 25

What is the first layer of atmosphere that an astronaut passes through during reentry from space?

Back 25

EXOPHERE

Front 26

WHAT DOES THE STATOSPHERE ABSORB IN THE OZONE LAYER?

Back 26

ultraviolet radiation

Front 27

Condition of earth's atmosphere at a particular time and place is known as ______?

Back 27

Weather

Front 28

The atmosphere traps solar and water exists in _____ form on Earth so that living things can use it?

Back 28

LIQUID

Front 29

The human activity tha tcauses the most airpollution is the burning of what?

Back 29

FOSSIL FUELS

Front 30

One result of air pollution is ___ ____ which is precipitation that contains more acid than normal.

Back 30

acid rain

Front 31

What is the weight of a column of air pushing on an object?

Back 31

air pressure

Front 32

the ____ of air can be calculated if the mass and volume of air are known.

Back 32

density

Front 33

A mountaintop's distance above sea level is called___?

Back 33

altitude

Front 34

Give the numer and name of the layer in which Earth's weather occurs?

Back 34

1 layer named troposphere