Compostion Of The Atmosphere

Question 1

What is the atmosphere

Answer 1

The layer of gasses surrounding the Earth surface

Question 2

What are the main gases in the atmosphere?

Answer 2

Nitrogen, Oxygen, Argon, and Carbon Dioxide

Question 3

What percentage of the atmosphere is Nitrogen (N₂)?

Answer 3

Approximately 78%.

Question 4

What percentage of the atmosphere is Oxygen (O₂)?

Answer 4

21%

Question 5

What percentage of the atmosphere is Argon (Ar)?

Answer 5

0,09%

Question 6

What are trace gases?

Answer 6

Gases that make up a very small part of the atmosphere

Question 7

Why is Nitrogen important in the atmosphere?

Answer 7

It is important for plant growth

Question 8

Why is Oxygen important in the atmosphere

Answer 8

It is essential for respiration in animals and humans.

Question 9

What role does Carbon Dioxide play in the atmosphere?

Answer 9

It is used by plants in photosynthesis and helps trap heat (greenhouse gas).

Question 10

What is the role of water vapor in the atmosphere?

Answer 10

Important for climatic processes such as rainfall and forms clouds and precipitation

Question 11

What happens if the balance of gases in the atmosphere changes?

Answer 11

It can lead to climate change, global warming, and breathing difficulties.

Question 12

What is the structure of the atmosphere based on?

Answer 12

The temperature changes with altitude.

Question 13

What are the four main layers of the atmosphere (from lowest to highest)?

Answer 13

Troposphere, Stratosphere, Mesosphere, Thermosphere.

Question 14

What is the Troposphere?

Answer 14

The lowest layer (0–10 km); where weather occurs and most life exists.Highest amount of oxygen and water vapor.Temperature decreases with altitude

Question 15

What separates the troposphere by the stratosphere

Answer 15

Tropopause

Question 16

What is the Stratosphere?

Answer 16

The second layer (10–50 km); contains the ozone layer.

Question 17

What is the importance of stratosphere

Answer 17

Airplanes fly in this layer,airplanes uses winds in this layer to pick up speed

Question 19

What happens to temperature in the Stratosphere?

Answer 19

It increases with height due to ozone absorbing sunlight.

Question 20

What is the Mesosphere?

Answer 20

The third layer (50–80 km); where meteors burn up.

Question 21

What is the importance of mesosphere

Answer 21

Prevents rocks from space entering the lowering atmosphere

Question 22

What happens to temperature in the Mesosphere?

Answer 22

It decreases with height; it’s the coldest layer.(-80)

Question 23

What is the Thermosphere?

Answer 23

The fourth layer extends from 80km to merge the space; where auroras occur and satellites orbit.

Question 24

What happens to temperature in the Thermosphere?

Answer 24

It increases with height; temperatures can get very hot due to solar radiation.

Question 25

Which layer contains the ozone layer?

Answer 25

The Stratosphere.

Question 26

Which layer is closest to Earth’s surface?

Answer 26

The troposphere

Question 27

A negative lapse rate

Answer 27

negative lapse rate means that temperature increases with height

Question 28

What is positive lapse rate

Answer 28

temperature decreases with height

Question 29

What happens in the exosphere?

Answer 29

Satellites orbit here, and gas particles are so far apart they can escape into space.

Question 30

Where is it found

Answer 30

outer layer of the thermosphere

Question 31

What is the ozone layer?

Answer 31

A layer in the stratosphere that contains a high concentration of ozone (O₃) gas.

Question 32

What is the main function of the ozone layer?

Answer 32

absorbs harmful ultraviolet (UV) radiation from the Sun, protecting living organisms.

Question 33

In which layer of the atmosphere is the ozone layer found?

Answer 33

The stratosphere

Question 34

What is ozone made of?

Answer 34

Three oxygen atoms (O₃).

Question 35

What is the ozone hole?

Answer 35

A thin area of the ozone layer, especially over Antarctica, caused by CFCs.

Question 36

Why is the ozone layer important for life on Earth?

Answer 36

It helps prevent skin cancer, eye damage, and harm to plants and animals by blocking UV rays.

Question 37

Give me 4 causes of ozone depletion

Answer 37

•The release of chemical compounds from industry and other human activity •Supersonic jet flights release ozone attacking gases in the stratosphere •using nitrogen fertilizer •Coolant in refrigerator and air conditioning

Question 38

Name effects of ozone layer on humans

Answer 38

Cuses skin cancer,cataracts,lowering immune system,increase incidence of malaria

Question 39

Name the effects on animals

Answer 39

Skin cancer,lowering the immune system,Reduce plant growth,Cataracts animals eyes

Question 40

Strategies to reduce ozone depletion

Answer 40

Use of ozone friendly products,Plant more trees to release oxygen through photosynthesis, regulation against the burning of fossil fuels,use of solar and wind energy to reduce the burning of fossil fuels,reduce production of CFK