Anticipatory set for watching opening chapter to the video "Life on Earth" .

1. Life on Earth
Video Anticipatory Set
Number your paper 1-10.
Answer “A” if you Agree with the statement or “D” if
you Disagree.

2. 1. There are about 1 million different types of living things
on the earth.

3. 1. There are about 1 million different types of living things
on the earth.
According to the video there are some 4 million different
forms of life on earth.

4. 2. The earth is about 5,000 million (5 billion) years old.

5. 2. The earth is about 5,000 million (5 billion) years old.
By most accounts the age of the earth is about 4,600
million (4.6 billion) years old.

6. 3. The conditions on the earth have not changed since it
was formed.

7. 3. The conditions on the earth have not changed since it
was formed.
Early earth, about 3.5 billion years ago (b.y.a.) was very
tectonically active with an atmosphere of methane,
hydrogen gas, steam and no oxygen.

8. 4. The first living things on earth were multicellular land
animals.

9. 4. The first living things on earth were multicellular land
animals.
While some colonial unicellular organisms existed 1.4
b.y.a., true multicellular organisms did not appear until
about 1b.y.a.

10. 5. The first living things appeared on the earth about 10,000
years ago.

11. 5. The first living things appeared on the earth about 10,000
years ago.
Microfossils appear in rocks dated over 3 b.y.a.
(3.8 b.y.a.)

12. 6. Charles Darwin developed a theory to explain the
variety of different organisms on the earth.

13. 6. Charles Darwin developed a theory to explain the
variety of different organisms on the earth.
Darwin proposed the theory of evolution by Natural
Selection

14. 7. The first forms of life appeared in the oceans.

15. 7. The first forms of life appeared in the oceans.
The first signs of life appeared to be similar to single-cell
algae arising in the warm, mineral rich waters of the early
oceans.

16. 8. Earth already had oxygen in the atmosphere when the
first organisms appeared.

17. 8. Earth already had oxygen in the atmosphere when the
first organisms appeared.
Oxygen was not present until it was released by
photosynthetic organisms. Also, no oxygen, no ozone O3.

18. 9. Reproduction is a characteristic of living things.

19. 9. Reproduction is a characteristic of living things.
Reproduction, either asexual or sexual, is necessary for the
continuation of a species.

20. 10. According to the fossil record, life forms have changed
over time.

21. 10. According to the fossil record, life forms have changed
over time.
While some organisms share some characteristics with
their fossil ancestors, most appear to change from their
original form or die out.