Science 12.2

Bill Nye: Forests

Video Worksheet

1. Almost one third of all the land on Earth is covered by forests.

2. The basement of a forest where the roots of trees grow is called the

sub floor.

3. The ground in the forest is called the floor.

4. Where the smaller plants grow is called the under story.

5. The sunlight is found in the forest canopy.

6. The age of a tree is determined by

by counting the number of rings.

7. insects  turn dead stuff into soil for the forest floor.

8. Dry, dead leaves are called litter.

9. Moldy leaves are called duff .

10. Decomposed leaves that look like soil are called humus.

11. The tallest trees in the world are the Redwoods of the west

coast of the United States.

12. The overheating of the Earth is called global warming.

13. The cypress forests in Florida grow in wetlands.

14. In Texas, the  forests shed their leaves in the fall.

15. In a fog forest, moisture condenses on the needles and leaves.

16. On a mountain, the point where trees can no longer grow is called the timber line.