WorksheetsUnit 6: Wonders of the Sea
Total questions: 20
Worksheet time: 10mins
______ throw plastic into the ocean.
shouldn't
must
Don't
will
While snorkeling, tourists are reminded that they ______ touch the coral, as the oils from their skin can damage the delicate polyps.
must
mustn't
have to
won't
To accurately map the seafloor, researchers ______ use sonar technology because light cannot penetrate the deepest layers.
don't
won't
can't
should
What ______ happen if the phytoplankton population drastically declines? The entire marine food web ______ be disrupted.
can/ must
won't/ can't
will/ will
will/ won't
If we fail to establish international agreements, individual countries ______ effectively tackle issues like high-seas pollution.
will
won't be able to
must
don't
A plastic water bottle can last for 450 years in the ocean. What is the main reason it causes so much harm?
It dissolves quickly and fertilizes the water.
It cleans the water as it floats.
It turns into food for large fish like whales.
It is non-biodegradable and breaks into tiny, harmful pieces called microplastics.
What is a key difference between a banana peel and a plastic bag in the ocean environment?
The banana peel will float forever, but the plastic bag will sink.
The plastic bag is biodegradable, but the banana peel is not biodegradable.
The banana peel will decompose, while the plastic bag will not.
They are both equally harmful to sea turtles.
How does most trash end up in giant ocean garbage patches?
Currents collect it and trap it.
Submarines dump it.
People on ships throw it there.
It grows from chemicals.
Why is a fishing net made of natural hemp rope less threatening to the ocean than a net made of nylon plastic?
It catches more fish.
The nylon net is invisible.
The nylon net sinks faster.
It breaks down naturally over time.
During a large oil spill, why do rescue workers have to immediately clean birds?
The oil makes their feathers too colorful.
The oil ruins their feathers so they can't stay warm or float.
The oil makes their feathers so heavy they cannot fly to find food.
The oil helps them swim.
Which creature is perfectly adapted to the Sunlight Zone because it needs to breathe air and uses the sun to navigate?
Octopus
Jellyfish
Starfish
Sea Turtle
What is the name for the process deep-sea creatures use to create their own glowing light?
Bioluminescence
Photosynthesis
Fluorescence
Crystallization
Why can't green plants like seaweed grow in the Twilight or Midnight Zones?
The water is too salty.
The pressure is too low.
There isn't enough sunlight.
The water is too warm.
In which zone would you find creatures that make their own light, like the anglerfish and the vampire squid?
The Sunlight Zone
The Twilight Zone
The Midnight Zone
The Abyss
If ocean temperatures continue to rise, some species ______ migrate to cooler polar waters or face extinction.
should
will
can't
don't
If you see a sea animal in trouble, you ______ tell a lifeguard or marine biologist.
should
will
can't
don't
If we keep polluting, many fish ______ get sick from eating plastic.
won't
don't
will
must
If we don't stop overfishing, some species ______ disappear forever.
can't
must
won't
will
If we clean up beaches, sea turtles ______ mistake plastic bags for jellyfish as often.
will
must
can't
won't
How do many creatures in the deep ocean find food in the dark?
They use echolocation like dolphins.
They follow sunlight to the surface.
They eat plants growing on the seafloor.
They rely on "marine snow" — dead things sinking from above.
