Marine Science - Final Exam Study Guide - Units 1-3

Front

What causes the density of seawater to increase?

Back

An increase in salinity.

Front

Differentiate between Multibeam and Sidescan SONAR.

Back

Multibeam SONAR provides colorful 3D maps, while Sidescan SONAR provides black and white maps.

Front

Define Euphotic, Disphotic, and Aphotic zones in the ocean.

Back

Euphotic - enough light for photosynthesis; Disphotic - twilight zone; Aphotic - no light.

Front

What does a CTD measure?

Back

Salinity, temperature, and depth.

Front

What trophic level are organisms that can produce their own food?

Back

Primary producer.

Front

What is the role of primary producers in marine ecosystems?

Back

They convert sunlight into energy through photosynthesis, forming the base of the food web.

Front

Explain the significance of salinity in seawater.

Back

Salinity affects the density of seawater, influencing ocean circulation and marine life.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms, while a food web is a complex network of interconnected food chains.

Front

What is the importance of the thermocline in ocean stratification?

Back

The thermocline is a layer where temperature changes rapidly with depth, affecting marine life and nutrient distribution.

Front

Define ocean acidification and its impact on marine life.

Back

Ocean acidification is the decrease in pH of ocean water due to CO2 absorption, harming organisms like corals and shellfish.