Oceans Lesson

Human Impact on Water

Human Impact - Cause

Overfishing​

• ​Removing fish faster than they can reproduce

• ​Fills human food needs

​Human Impact - Effect

Overfishing​

• ​Population of Earth's fish species is dropping

• ​Disrupts the food web

• ​Causes organisms to migrate

Multiple Choice

What is "overfishing"?

• Fishing out of season

• Catching fish faster than they can replenish

• Catching fish from the top of the food chain

• Catching more fish than what people eat

​Human Impact - Cause

Fertilizer Runoff and Pollution

• ​Toxic chemicals from factories wash into rivers

• ​Fertilizer runoff into rivers and lakes

Multiple Select

Which of the following is the cause of dead zones in the ocean? (check all that apply)

• An increase in the number of fish.

• An increase in runoff from fertilizer

• An increase in oxygen

• A decrease in oxygen

Multiple Choice

Corals die because of ________________

• boat anchors that destroy or break the corals.

• the gradual warming of the ocean's temperature

• irresponsible divers that kick the corals.

• All of the above

Multiple Choice

Industries have built many oil and gas platforms off the Texas coast. Coral reefs have formed underwater on many of the platforms.  The formation of coral reefs on the platforms is - 

• harmful because it increases competition between coral reefs

• harmful because it decreases the likelihood that coral reefs will form in flat, muddy areas

• helpful because it offsets the number of coral reefs lost to pollution

• helpful because it prevents coral reefs from forming in flat, muddy areas

Multiple Choice

Coral reefs are endangered by

• climate change

• overfishing

• pollution

• all of the above

Multiple Choice

How does plastic effect sea life?

• Microplastics create dead zones in the oceans.

• Plastics provide habitats for marine life.

• Wildlife such as dolphins, seals and seabirds often eat plastic, mistaking it for food.

• Non of the above.

The Microbead-Free Waters Act of 2015 was signed into law by President Obama. 

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There's still hope!

Multiple Choice

What happens to plastic waste?

• It is a biodegradable material so it eventually disintegrates

• It never fully goes away, it just breaks into little pieces

• There is no such thing as plastic waste, all plastic is recycled

• It is dumped in the ocean for fish to eat

Multiple Choice

Where does the majority of plastic waste end up?

• Oceans

• Burned for energy

• Landfills

• Recycled

Multiple Choice

By which year will there be more plastic than fish in the ocean?

• 2030

• 2040

• 2050

• 2025

Multiple Choice

How do the oceans contribute to the amount of Oxygen in the Earth's atmosphere?

• Fish in the ocean produce oxygen.

• Phytoplankton in the ocean produce oxygen through the process of respiration.

• Phytoplankton in the ocean produce oxygen through the process of photosynthesis.

Multiple Choice

How do oceans regulate the climate?

• Currents move water that heats or cools the atmosphere, around the world.

• Ocean waves create winds.

• Oceans prevent clouds from forming.

• Currents move the atmosphere from place to place.