Question

bill nye - ocean currents
make sure you fill in each blank or circle the correct response.

1. ocean water is water.
2. the heat from the sun condenses/evaporates the water in the ocean leaving only salt behind.
3. ocean currents are caused by and the amount of salt in the water.
4. warm air holds less/ more heat than warm water.
5. an ocean is a river of water running through the ocean.
6. very salty water is than water that is not as salty.
7. thermohaline currents are warm salty / cold fresh water ocean currents.
8. data marker drift with ocean currents.
9. fish depend on water, also known as currents, for food.
10. rivers and lakes are not salty because the in the water flow to the ocean.
11. the amount of salt in the ocean has/has not changed.
12. the flow of currents in the northern and southern hemispheres are
13. the most powerful ocean current, the gulf stream, is in the ocean.
14. sea level means that land is the same as the sea.
15. earth is the only known planet with oceans that’s why earth is the only planet with

Explanation:

1. Ocean water contains salt, so it is salt - water.
2. The sun's heat causes evaporation of ocean water, leaving salt behind.
3. Wind and salinity differences cause ocean currents.
4. Warm water holds more heat than warm air due to water's high specific heat capacity.
5. An ocean current is a flowing body of water in the ocean.
6. Salty water is denser (heavier) because of dissolved salts.
7. Thermohaline currents are warm, salty ocean currents driven by temperature and salinity gradients.
8. Data markers (like buoys) drift with ocean currents.
9. Fish depend on moving (current) water for food transport.
10. Rivers and lakes are less salty as salts are carried to the ocean.
11. The amount of salt in the ocean has changed over geological time due to various processes.
12. Currents in the northern and southern hemispheres flow in different directions due to the Coriolis effect.
13. The Gulf Stream is in the Atlantic Ocean.
14. Sea - level implies land is at the same elevation as the sea.
15. Earth is the only known planet with oceans.

Answer:

1. salt
2. evaporates
3. wind
4. less
5. current
6. heavier
7. warm salty
8. (no specific answer given in the text, could be buoys or similar)
9. moving
10. salts
11. has changed
12. different (due to Coriolis effect)
13. Atlantic
14. elevation
15. (no fill - in, just a statement)