Oceans Review

1. Oceans Review

2. Wave Action • A wave is the movement of ________ through a body of water.

3. A wave is the movement of energy through a body of water.

4. Waves form when _____ blowing across the water’s ______ transmit their energy into water.

5. Waves form when winds blowing across the water’s surface transmit their energy into water.

6. What is the highest part of a wave called?

7. What is the highest part of a wave called? Crest

8. What is the distance between crests called?

9. What is the distance between crests called? Wavelength

10. What is the lowest part of a wave called?

11. What is the lowest part of a wave called? Trough

12. The distance from the crest to trough is called ________.

13. The distance from the crest to trough is called wave height.

14. How a wave forms?

15. True or False Short low waves are called swells.

16. False The answer is… • LONG low waves are called swells

17. When waves get closer to the shore the wave height ________ and wavelength _________.

18. When waves get closer to the shore the wave height increases and wavelength decreases.

19. Where do long low waves occur?

20. Where do long low waves occur? In deep water

21. True or False A rip current is a rush of water that flows rapidly back to sea through a narrow opening.

22. True A rip current is a rush of water that flows rapidly back to sea through a narrow opening.

23. Tides • A tide is the daily _____ and _____ of the Earth’s waters.

24. A tide is the daily rise and fall of the Earth’s waters.

25. True or False The gravitational pull of the sun and moon causes tides

26. True The gravitational pull of the sun and moon causes tides

27. Tides with the _________ range between high and low tides are _____ ______.

28. Tides with the greatest range between high and low tides are springtides.

29. Tides with the ________ difference between high and low tides are _____ ______.

30. Tides with the least difference between high and low tides are called neaptides.

31. How many hours apart do high tides occur?

32. How many hours apart do high tides occur? 12 or 12.5 hours

33. Ocean Water Chemistry • The total amount of dissolved salts in water is called ________.

34. The total amount of dissolved salts in water is called salinity.

35. True or False Salinity is highest near the surface because rain, snow, and melting ice add fresh water into the ocean.

36. False the answer is Salinity is LOWEST near the surface because rain, snow, and melting ice add fresh water into the ocean.

37. Where is salinity highest? And explain why?

38. Where is salinity highest? And explain why? Salinity is highest in hot and dry climates where water evaporates and salt is left behind. Salinity is also high near the poles where water freezes into ice and salt is left behind in the remaining water.

39. Salt water has a _____ density then fresh water.

40. Salt water has a higher density then fresh water. The higher the salinity the higher the density.

41. Increases or decreases? Salinity _______ water density. The densest water is in the _____ _____.

42. Salinity increases water density. The densest water is in the deepzone.

43. Currents and Climate • A current is a large ______ of_______ water that flows through the oceans.

44. A current is a large stream of moving water that flows through the oceans.

45. The Coriolis effect causes the currents in the ______ Hemisphere to curve ______ and currents in the ______ Hemisphere to curve______.

46. The Coriolis effect causes the currents in the Northern Hemisphere to curve right and currents in the Southern Hemisphere to curve left.

47. True of False The upward movement of hot water from ocean depths is called upwelling.

48. False the answer is The upward movement of COLD water from ocean depths is called upwelling.

49. Exploring the Ocean • Sea-floor spreading is caused by __________ plates.

50. Sea-floor spreading is caused by diverging plates.