Earth Science Virtual Lesson January 21

Please watch the Earth Science Scifiles: Online lessons about the Ocean.
Take notes as you listen to the information provided by the presenters.
8-2
Answer questions 1-34
8-4
Answer questions 1-17
Bring your questions answered to class. Be ready to discuss the information included in the videos.

Ocean Odyssey Tides and Waves

Questionnaire
1. What is gravity?
2. What causes tides?
3. How did oceans form?
4. If the ocean is made from rain water, why is it salty?
5. Why is the salinity of the ocean water so important?
6. Which is denser, salt water or fresh water?
7. Is there anything other than salinity that determines the density of water?
8. How does temperature make the water denser?
9. Why is polar water denser?
10. What is the thermohaline circulation?
11. What is meant by upwelling? Is it important?
12. What is meant by thermocline?
13. Where is the thermocline located?
14. How do surface currents form?
15. What is a surface Current?
16. What is the Coriolis Effect?
17. How does the topography underwater affect the surface currents?
18. Why are some surface currents cold and others warm?
19. Do warm and cold currents affect the climate of an area?
20. Why does NASA study currents?
21. How does NASA monitor the ocean?
22. What is the formula for velocity?
23. How can you determine the velocity of an object?
24. What is the velocity of the Gulf Stream’s current?
25. Where does the Gulf Stream Current Flow?
26. Are coastal currents different? Explain
27. What is dispersion?
28. Where is the Sargasso Sea located?
29. What is a tide?
30. How often do we have high and low tides? Explain
31. Do waves move objects forward?
32. Mention three types of fossil fuels?
33. Why are they called fossil fuels?
34. In order for fossil fuels to form, what conditions must be met?