Oceans

Which characteristic of water allows it to absorb more heat without a significant increase in temperature?

• transparency

• viscosity

• high specific heat

• surface tension

What factors contribute to the salinity of different parts of the ocean? Mark only one oval.

• The salinity of the ocean is the same everywhere.

• Areas with more rainfall have higher salinity.

• Areas with lower temperatures have higher salinity.

• Areas with higher temperatures and less rainfall have higher salinity.

Phenomenon causing the movement of water from the surface to the bottom.

• Downwelling

• Evaporation

• Condensation

• Wave

• Whirlpool

What is the primary benefit of oceanic upwelling?

• It brings warm water to the surface, increasing sea surface temperatures.

• It brings cold water to the surface, increasing sea surface temperatures.

• It brings nutrient-rich water to the surface, supporting marine life.

• It brings oxygen-rich water to the surface, supporting marine life.

Despite the absence of sunlight in the deep sea, certain organisms are able to survive. What is the primary source of energy for these organisms?

• They rely on photosynthesis performed by deep-sea plants.

• They feed on the remains of dead organisms that sink from the surface.

• They derive energy from the heat of the earth's core.

• They utilize energy from chemical reactions at hydrothermal vents.

Which ocean zone is known for its lack of sunlight and extreme pressure?

• Surface zone (sunlight)

• Shallow zone (twilight)

• Midnight zone

• Deep zone (abyss)

Which of the following statements about ocean depth is true?

• The pressure decreases as you go deeper in the ocean.

• There is more sunlight available the deeper you go in the ocean.

• There is an abundance of life in the ocean below the twilight zone.

• The deeper you go in the ocean, the fewer producers (phytoplankton - algae) you will find.

What is a unique characteristic of cold seeps in the ocean?

• They cause the water to freeze.

• They lead to the formation of icebergs.

• They support chemosynthesis, leading to unique forms of life due to the rich gases present.

• They are identical to coral reefs.

Complete the statement: Moving deeper into the ocean, temperature and sunlight __________ while pressure __________.

What type of ocean topography is the Mariana Trench an example of?

• volcanic island

• continental slope

• abyssal plain

• oceanic trench