Practice Test Ch. 14/15

According to the figure, which of the following statements about the distribution of land and water is true?

• The percentage of land and water is roughly equal in both hemispheres
• the southern hemisphere has much more water than the northern
• the norther hemisphere has much more water than the southern
• the earth is covered by more land than water

Which of the following properties determines water's vertical position in the ocean?

• organic content
• density
• velocity
• oxygen content

Which ocean has the greatest average depth?

• Pacific
• Atlantic
• Indian
• Arctic

Which is NOT considered one of the four major oceans?

• Antarctic
• Pacific
• Indian
• Atlantic

How do plankton and nekton differ?

• plankton are strong swimmers
• plankton are floaters
• plankton are carnivores
• plankton live on the ocean bottom

Deep, steep-sided valleys that originate on the continental slope and may extend to the ocean basin floor are called

• slope canyons
• submarine canyons
• abyssal plains
• trenhes

Seamounts are

• volcanoes that form on the ocean floor
• only found in the Pacific ocean
• a special type of oceanic trench
• submarine canyons found near Australia

Which of the following occurs at the continental margin in the Pacific Ocean? (hint: ring of fire)

• volcanic activity
• earthquakes
• plate interactions
• all of the above

Mineral-rich water, heated by newly formed oceanic crust, escapes through cracks in the ocean floor called

• nodules
• rifts
• hydrothermal vents
• trenches

What is the salinity of seawater? (in percentage)

• 1.5%
• 3.5%
• 5.5%
• 10%