Ocean Zones

1. Which ocean zone contains the most sunlight and supports the most plants and animals?

• A. The Midnight Zone
• B. The Sunlight Zone
• C. The Abyss
• D. The Trench

2. What is 'marine snow' in the Twilight Zone?

• A. Frozen ice falling from the poles
• B. A type of glowing jellyfish
• C. Tiny bits of food and waste falling from above
• D. A storm that moves across the ocean surface

3. How do many animals in the dark Midnight Zone create their own light?

• A. By eating glowing coral
• B. Through a process called bioluminescence
• C. By collecting sunlight in specialized skin
• D. Through reflection of the moon

4. Where does the energy come from for life around hydrothermal vents?

• A. Sunlight
• B. Moonlight
• C. Chemicals in hot water
• D. Floating plastic objects

1. Why would pollution in the Sunlight Zone be a problem for the animals living in the Abyss?

• A. Deep-sea animals swim to the surface to play
• B. Pollutants never sink that deep
• C. The ocean is one connected system and waste moves through the layers
• D. Deep-sea animals eat plastic for nutrients

2. What is the role of phytoplankton in the Sunlight Zone for humans on land?

• A. They keep the ocean water salty
• B. They produce about half of the oxygen we breathe
• C. They build the giant underwater skyscrapers
• D. They block the sun from getting too hot

3. If you were a creature living in the deep ocean, why might it be an advantage to have soft, jelly-like skin?

• A. It helps you swim faster than other fish
• B. It makes you look more colorful to mates
• C. It helps you survive the crushing water pressure
• D. It allows you to store more sunlight

4. How does the deep ocean help control the Earth's weather?

• A. By acting as a giant thermostat that stores cold temperatures
• B. By preventing all storms from reaching the shore
• C. By turning hot water into ice cubes at the poles
• D. By creating wind through underwater volcanoes