Ocean Floor
Homework on Ocean Floor
Instructionon on how to download the movie online:
Go to the link: http://www.learner.org/resources/series78.html# and click on the next to the “4. Sea Floor”. To avoid pop-up blocker, press CRTL key as you click on the
If you click on the movie screen, you will get a full screen view.
After watching the 30 minute movie on The Sea Floor, answer the following questions by typing in a separate sheet of paper.
(As you watch the movie gather as much information as possible so that you will be able to answer the questions appropriately later. The questions are meant to be answered from the movie and not from any other source!)
1. Mention two techniques that are used to map the seafloor features?
2. What type of marine sediments are the abyssal plains made of?
3. Where in the ocean floor do we have the most frequent volcanic eruptions?
4. Fossils of marine algae that are older than 2.5 billion years were found while the ocean crust is not older than 180 million years. What does this indicate with respect to what happens to older ocean crust.
5. What are the main differences between Gloria and Side Scan Sonar (Echo-sounder)?
6. The two natural resources that have been widely extracted from the ocean floor are and .
7. What are the two possible sources of manganese nodules?
8. Mention at least two of the environmental damages that may arise by mining natural resources from the ocean floor.
9. List two of the geological and environmental questions that can be answered by investigating the ocean floor?
10. Explain what you found more impressing about the ocean
Instructionon on how to download the movie online:
Go to the link: http://www.learner.org/resources/series78.html# and click on the next to the “4. Sea Floor”. To avoid pop-up blocker, press CRTL key as you click on the
If you click on the movie screen, you will get a full screen view.
After watching the 30 minute movie on The Sea Floor, answer the following questions by typing in a separate sheet of paper.
(As you watch the movie gather as much information as possible so that you will be able to answer the questions appropriately later. The questions are meant to be answered from the movie and not from any other source!)
1. Mention two techniques that are used to map the seafloor features?
2. What type of marine sediments are the abyssal plains made of?
3. Where in the ocean floor do we have the most frequent volcanic eruptions?
4. Fossils of marine algae that are older than 2.5 billion years were found while the ocean crust is not older than 180 million years. What does this indicate with respect to what happens to older ocean crust.
5. What are the main differences between Gloria and Side Scan Sonar (Echo-sounder)?
6. The two natural resources that have been widely extracted from the ocean floor are and .
7. What are the two possible sources of manganese nodules?
8. Mention at least two of the environmental damages that may arise by mining natural resources from the ocean floor.
9. List two of the geological and environmental questions that can be answered by investigating the ocean floor?
10. Explain what you found more impressing about the ocean