dwgaegeat

1. Where is “bad” ozone located? a. The mesosphere b. The troposphere c. The stratosphere d. The amazon

2. What kind of chemicals destroy ozone? a. Sulfuric acid b. CFCs c. Bubble soap d. Pancakes

3. How long has the ozone layer been being depleted? a. 6 months b. A year c. 87,000,000,000 years d. About two decades

4. When is the “hole” in the ozone the largest? a. Spring b. Winter c. Summer d. Fall

5. How many molecules of ozone can one molecule of chlorine destroy? a. 1 b. 100 c. 100,000 d. 1,000,000

6. How long do scientists believe it will take for the ozone layer to return to normal? a. About a decade b. 1,000 years c. 50 years d. A millennium

7. What is the average reading, in Dobson Units, of the ozone layer? a. 100 b. 300 c. 220 d. 500

8. For every 1% of the ozone layer that is depleted, how much more UV rays reach the Earth? a. 1% b. 2% c. 5% d. 10%

9. What kind of microorganism is the building block of the oceanic food chain? a. Manatee b. Walrus c. Plankton d. Seahorse

10. Which continent is the “hole” in the ozone about the size of? a. Africa b. Australia c. South America d. North America