Pt8

Question 1

Describe the composition of Earth’s atmosphere in terms of greenhouse and non-greenhouse gases.

Answer 1

Earth’s atmosphere is composed of 99% non-greenhouse gases, which include nitrogen (N2), oxygen (O2), water (H2O), and 1% greenhouse gases, primarily carbon dioxide (CO2) and methane (CH4).

Question 2

Define the primary non-greenhouse gases in Earth’s atmosphere.

Answer 2

The primary non-greenhouse gases in Earth’s atmosphere are nitrogen (N2), oxygen (O2), and water vapor (H2O).

Question 3

Explain the role of carbon dioxide in Earth’s atmosphere.

Answer 3

Carbon dioxide (CO2) is a greenhouse gas that contributes to the greenhouse effect, trapping heat in the atmosphere and influencing global temperatures.

Question 4

How does methane compare to carbon dioxide in terms of its greenhouse effect?

Answer 4

Methane (CH4) is a more potent greenhouse gas than carbon dioxide (CO2), having a greater heat-trapping ability over a shorter time frame, although it is present in smaller quantities.

Question 5

List the main components of Earth’s atmosphere and their respective percentages.

Answer 5

The main components of Earth’s atmosphere include nitrogen (N2) at approximately 78%, oxygen (O2) at about 21%, and trace amounts of other gases including carbon dioxide (CO2) and methane (CH4).

Question 6

Describe the significance of water vapor in the atmosphere.

Answer 6

Water vapor (H2O) is a significant component of the atmosphere, acting as a greenhouse gas and playing a crucial role in weather and climate systems.

Question 7

Describe the impact of global warming on coastal areas.

Answer 7

Global warming leads to increased sea levels and more frequent and severe storms, resulting in coastal flooding and erosion.

Question 8

Explain how global warming affects ecosystems.

Answer 8

Global warming alters habitats, leading to shifts in species distribution, changes in migration patterns, and increased extinction rates.

Question 9

Define the changes in water supply due to global warming.

Answer 9

Global warming can cause alterations in precipitation patterns, leading to droughts in some areas and flooding in others, affecting water availability.

Question 10

Do changes in global temperatures influence weather patterns?

Answer 10

Yes, rising global temperatures can lead to more extreme weather events, including hurricanes, heatwaves, and heavy rainfall.

Question 11

How does global warming impact wildlife?

Answer 11

Global warming affects wildlife by disrupting food chains, altering habitats, and increasing the risk of extinction for vulnerable species.