Reading Assignment Oceans Quiz

Why does seawater look blue under bright sunshine?

• It reflects all colors including blue

• It absorbs all colors including blue

• It absorbs all colors except blue

• It reflects all colors except blue

What is the main difference between seas and lakes?

• Color and temperature

• Shape and vegetation

• Depth and location

• Size and saltiness

What percentage of the Earth's surface do oceans cover?

• 70%

• 90%

• 30%

• 50%

How are oceans formed?

• By rainwater filling low-lying areas

• By volcanic eruptions

• By asteroid impacts

• By earthquakes

What is the smallest and coldest ocean?

• Arctic Ocean

• Pacific Ocean

• Indian Ocean

• Atlantic Ocean

What is bioluminescence in marine animals?

• Generating light through photosynthesis

• Absorbing light from the sun

• Creating their own light using chemicals

• Reflecting light from the moon

What is the main purpose of kelp forests for marine life?

• Hiding spot for predators

• Breeding ground for fish

• Source of food and protective shelter

• Place for sunbathing

Which zone of the ocean is in total darkness?

• Midnight zone

• Sunlit zone

• Abyss

• Twilight zone

What is the primary function of seagrasses in the ocean?

• Provide habitat for sea animals

• Act as camouflage for predators

• Create barriers against storms

• Serve as a source of fresh water

What do some marine animals use seashells for?

• Collecting food

• Building nests

• Attracting mates

• Body armor