Unit 2 Marine Biology Test

Choose the best definition for each word

• How acidic or basic something is

• Ocean floor

• Extends from the shelf, 135 - 2000m

• Salinity

• Measure of all the dissolved salts

• Continental slope

• Base of continental rise, 4000 - 6000 m

• pH

• Shallow, gently sloping part of continental crust

• Continental shelf

Tags

NGSS.MS-ESS2-4

Choose the best match for each word

• Underwater, flat area on ocean floor

• Seamount

• Rises from ocean floor but does not reach surface

• Underwater volcano

• Vents or fissures located near areas of plate activity

• Oceanic trench

• Steep depression, deepest part of ocean

• Abyssal plain

• Underwater mountain system

• Mid-ocean ridge

Tags

NGSS.MS-ESS2-3

Match the following

• The area of the ocean that receives little to no light

• Twilight

• The bottom of the ocean (ocean floor)

• Midnight

• The open water portion of the ocean

• Photic

• The area of the ocean that receives no light

• Pelagic

• The area of the ocean that is reached by sunlight

• Benthic

Which of these is a factor that affects the temperature of the ocean?

• Latitude

• Salinity

• Living things

• pH

Tags

NGSS.MS-ESS2-6

Where would you expect to find low temperature (cold), high salinity water?

• Floating on the surface

• Down near the bottom

Which of these is a characteristic that makes water a unique substance?

• It does not easily bond with other molecules

• When water freezes, it floats

• Water is nonpolar

• None of these are correct

Tags

NGSS.MS-ESS2-4

Which of these is a reason the oceans are salty?

• Waves and surf erode rock

• Biological processes

• Hydrothermal vents

• All of these are correct

Which of these is the average salinity of the ocean?

• 8 percent

• 8 parts per thousand

• 35 percent

• 35 parts per thousand

Which of these is the most important factor in keeping ocean pH stable?

• Carbon dioxide levels

• Temperature

• Salinity

• Sea level

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

In which of these areas would you expect to find the depth of the ocean increasing quickly?

• Continental shelf

• Continental slope

• Abyssal plain

• Ocean floor