Essentials of Oceanography - Ch. 4 & 5

Which of the following is NOT an example of terrigenous sediment?

• a) Glacial till

• b) Volcanic ash

• c) Sand

• d) Foraminifera shells

Abyssal clay is primarily composed of:

• a) Silica

• b) Calcium Carbonate

• c) Iron oxides

• d) Clay minerals

Which type of sediment is formed from the accumulation of the hard parts of marine organisms?

• a) Terrigenous sediment

• b) Hydrogenous sediment

• c) Biogenous sediment

• d) Cosmogenous sediment

The white cliffs of Dover in England are composed of which type of biogenous sediment?

• a) Radiolarian ooze

• b) Diatom ooze

• c) Foraminiferal ooze

• d) Coccolithophore ooze

Which type of sediment is primarily derived from land and transported by rivers and wind?

• a) Terrigenous sediment

• b) Hydrogenous sediment

• c) Biogenous sediment

• d) Cosmogenous sediment

What gives water its unique properties such as high heat capacity and cohesion?

• a) Hydrogen bonding

• b) Covalent bonding

• c) Ionic bonding

• d) Metallic bonding

What property of water allows it to form droplets on a surface?

• a) Adhesion

• b) Cohesion

• c) High heat capacity

• d) Surface tension

The density of seawater increases with:

• a) Increasing temperature and decreasing salinity

• b) Decreasing temperature and increasing salinity

• c) Increasing temperature and increasing salinity

• d) Decreasing temperature and decreasing salinity

Which factor is NOT responsible for variations in seawater salinity?

• a) Precipitation

• b) Evaporation

• c) River runoff

• d) Subduction zones

The ocean is considered slightly:

• a) Acidic

• b) Neutral

• c) Basic

• d) Alkaline