The atmosphere
14 review questions with answers for The atmosphere. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
Most abundant gas in dry air?
- Oxygen
- NitrogenRight answer
- Argon
- Carbon dioxide
What this set covers
The makeup of dry air and what humans add to it. Nitrogen, oxygen, argon and carbon dioxide percentages appear, along with photosynthesis, methane, global warming, ozone, carbon monoxide, sulfur dioxide, oxides of nitrogen and particulates.
- Common mix-up
- Students often mix up carbon dioxide and carbon monoxide: carbon dioxide is a greenhouse gas, while carbon monoxide is the toxic gas made when fuels burn in too little oxygen.
- Review tip
- Make a table of each pollutant with its source and its effect, and cover one column at a time to test yourself from memory.
All 14 questions and answers
Most abundant gas in dry air?
Answer: Nitrogen
Approximate percentage of nitrogen in dry air?
Answer: 78%
Approximate percentage of oxygen in dry air?
Answer: 21%
Approximate percentage of carbon dioxide in dry air today?
Answer: 0.04%
Noble gas that makes up almost 1% of dry air?
Answer: Argon
Process by which plants and algae raised oxygen levels in the atmosphere?
Answer: Photosynthesis
Greenhouse gas released by cattle and rice paddies?
Answer: Methane
Rising greenhouse gas levels are linked to…?
Answer: Global warming
Gas high in the atmosphere that absorbs harmful UV radiation?
Answer: Ozone
Toxic, colourless gas formed by incomplete combustion of fuels?
Answer: Carbon monoxide
Acidic gas, released by volcanoes and coal-fired power stations, that causes acid rain?
Answer: Sulfur dioxide
Pollutants formed from air at the high temperatures inside car engines?
Answer: Oxides of nitrogen
Tiny solid specks of soot from diesel engines that damage the lungs?
Answer: Particulates
Positive test for oxygen?
Answer: Relights a glowing splint
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.