Catch the greenhouse gases

Exercise and reference answers

Items

1. Matches the category

   Yes

   Item

   Carbon dioxide

2. Matches the category

   Yes

   Item

   Methane

3. Matches the category

   Yes

   Item

   Nitrous oxide

4. Matches the category

   Yes

   Item

   Water vapour

5. Matches the category

   No

   Item

   Oxygen

6. Matches the category

   No

   Item

   Nitrogen

7. Matches the category

   No

   Item

   Argon

8. Matches the category

   No

   Item

   Helium

Category

Greenhouse gases

Instructions

Catch the gases that trap heat. Let the harmless air gases fall.

Explanation