Unit 3, Lesson 1 (green)

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

pages 122-125

First and Last Name *

1. What was Wegener's hypothesis? *

1 point

2. What did Wegener need to add to his hypothesis for it to become a theory? *

1 point

3. One day, Alfred Wegener was looking at an atlas when his eye fell on the coasts of South America and Africa. They are on opposite sides of the Atlantic Oceans. Yet he noticed that they ______. *

1 point

A. are the same shape

B. have the same composition

C. seem to fit together

D. have similar climates

3. Wegener concluded that the two landmasses probably were ______ millions of years ago. *

1 point

A. nonexistent

B. joined

C. the same distance apart

D. smaller

3. The idea seemed incredible because the continents are so far apart today. The continents would have had to ______. *

1 point

A. change their shapes

B. form at different times

C. be the only landmasses on Earth

D. move from one place to another

3. To establish a scientific theory about his idea, Wegener first had to ______. *

1 point

A. form and test a scientific hypothesis

B. disapprove other scientific laws

C. prove this movement had continued

D. gain the acceptance of all other scientists

4. Why is cosmic background radiation evidence for the Big Bang theory? *

1 point

5. Scientists continue to look for evidence to support existing theories. Which finding would strengthen the fossil evidence support for the continental drift theory? *

1 point

6. Fossils of an ancient fern also have been cited as evidence for the continental drift theory. Based on the locations of Earth's continents, where have these fossils most likely been found? *

1 point

7. Some scientists did not accept Mesosaurus fossils as evidence that South America and Africa once were joined. They hypothesized that the animals might have moved between continents on a land bridge. What evidence would have supported the land bridge hypothesis and helped refute the continental drift theory? *

1 point

8. The theory that tectonic plate- huge slabs of rock covering Earth's surface- push together and pull apart to cause landforms developed from many lines of evidence. Which pieces of evidence for plate tectonic theory also relate to the theory of continental drift? *

1 point

9. Which piece of evidence would support the hypothesis that the seafloor spreads? *

1 point

10. How does the evidence for seafloor spreading support Wegener's older continental drift theory? *

1 point

11. Which hypothesis is the best supported by the information on the map? *

1 point

12. What part of the plate tectonic theory do the locations of earthquakes most clearly support? *

1 point

Submit

Clear form

Never submit passwords through Google Forms.

This form was created inside of Visalia Unified School District.

Does this form look suspicious? Report

Forms