Chapter 3 Multiple Choice Questions

* not completed

. What causes hydrogen bonds to form between neighbouring water molecules?

Electron transfer correct incorrect

The sharing of electrons correct incorrect

Surface tension correct incorrect

The dipolarity of water molecules correct incorrect

* not completed

. Which property of seawater enables Ocean-skaters to skim along the surface of the Ocean?

High capillarity correct incorrect

High surface tension correct incorrect

High viscosity correct incorrect

Low compressibility correct incorrect

* not completed

. What effect does the addition of salt have on the heat capacity of pure water?

The addition of salt greatly increases the heat capacity of pure water. correct incorrect

The addition of salt decreases the heat capacity of pure water. correct incorrect

The addition of salt slightly increases the heat capacity of pure water. correct incorrect

The addition of salt has no effect on the heat capacity of pure water. correct incorrect

* not completed

. On average, how much salt does a litre of oceanic seawater contain?

25 grams correct incorrect

30 grams correct incorrect

35 grams correct incorrect

40 grams correct incorrect

* not completed

. What is the average pH of seawater?

5.8 correct incorrect

6.8 correct incorrect

7.8 correct incorrect

8.8 correct incorrect

* not completed

. Which of the following gases are dissolved in seawater?

Only oxygen correct incorrect

Only carbon dioxide correct incorrect

Carbon dioxide and oxygen correct incorrect

Nitrogen, oxygen, and carbon dioxide correct incorrect

* not completed

. Which nutrient is the main limiting factor for photosynthesis in High Nutrient–Low Chlorophyll regions?

Nitrogen correct incorrect

Carbon correct incorrect

Iron correct incorrect

Phosphorus correct incorrect

* not completed

. Given each bar of pressure is equal to 100 kPa, by how many bars does the pressure of seawater increase for each 10-metre increase in depth?

1 bar correct incorrect

2 bars correct incorrect

5 bars correct incorrect

10 bars correct incorrect

* not completed

. For how long can a Cuvier's beaked whale survive in deep water on only one breath of air?

30 minutes correct incorrect

60 minutes correct incorrect

90 minutes correct incorrect

More than 120 minutes correct incorrect

* not completed

. Which part of the visible spectrum penetrates seawater the most?

Red light correct incorrect

Blue light correct incorrect

Green light correct incorrect

Orange light correct incorrect