Topic C9 - Chemistry Of The Atmosphere

Question 1

What gases did the early atmosphere contain?

Answer 1

Mainly carbon dioxide and virtually no oxygen.

Question 2

Why has nitrogen increased?

Answer 2

• volcanoes produced nitrogen
• denitrifying bacteria produced nitrogen
• ammonia was converted to nitrogen

Question 3

Why has oxygen increased?

Answer 3

Algae and plants produced oxygen
By photosynthesis

Question 4

What does sultry dioxide cause?

Answer 4

Respiratory probs
Acid rain

Question 5

Oxides of nitrogen - causes

Answer 5

Respiratory probs
Acid rain

Question 6

What do particulates causeV

Answer 6

Global dimming
Health probs for humans

Question 7

Greenhouse gas purpose?

Answer 7

Maintain temperatures on Earth high enough to support life

Question 8

What is the greenhouse effect?

Answer 8

They allow short wavelength radiation from sun to pass thru atmosphere to earths surface, but absorb the outgoing long wavelength radiation, causing an increase in temperature

Question 9

Define carbon footprint 👣

Answer 9

The total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product