Interactive Online Quiz

Question 1. Sea levels have varied (changed) throughout geologic time. During the 20th century Earth's sea level each year has:

1. fallen 2.4 mm
2. stayed the same
3. risen 1.8 mm
4. risen 0.3 m

Question 2. Which of these functions do radar altimeters not perform?

1. provide estimates of surface wind speed
2. provide estimates of wave height
3. measure the range from the satellite to the ocean surface
4. measure the depth of undersea mountains

Question 3. What are Nansen bottles?

1. cylindrical containers that sample sea temperature and salinity
2. the latest sports cooler
3. cylindrical containers that sample fish and algae concentration
4. cylindrical containers that sample rocks and sand from the sea floor

Question 4. What ocean current did Benjamin Franklin do his first scientific study of?

1. the New York Stream
2. the Gulf Stream
3. the Falmouth Stream
4. the Atlantic Stream

Question 5. Captain Folger told Benjamin Franklin that certain mammals avoided swimming in this fast-moving stream of water (current). Which sea mammals was he referring to?

1. whales
2. dolphins
3. manatees
4. sea turtles

Question 6. What is the equation that oceanographers use to measure sea-surface height?

1. S + R = SSH
2. R - S = SSH
3. S - R = SSH
4. S x R = SSH

Question 7. How is Lagrangian velocity measured?

1. by tracking a parcel of water wherever it goes
2. by measuring water as it flows past a fixed position
3. by measuring the speed of water flowing past a moving boat
4. by comparing the speed of the water to the speed of the fish swimming in it

Question 8. How is Eulerian velocity measured?

1. by measuring the speed of water flowing past a moving boat
2. by measuring water as it flows past a fixed position
3. by comparing the speed of the water to the speed of the fish swimming in it
4. by tracking a parcel of water wherever it goes.

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