name date ocean zones reading a...

READING A DIAGRAM 5 OCEAN ZONES At its deepest point, the ocean is more than six miles deep. Scientists categorize layers of the ocean into zones. Study the diagram to learn about the habitat of each zone. Then answer the questions. Sunlight Zone This zone receives light and heat from the sun. That is why so many plants and animals thrive here. Almost 90% of ocean life is in this zone. Twilight Zone Very little sunlight reaches this zone. That is why plants cannot grow here. The animals that live here must be able to survive in a cool, dark habitat. Some of the twilight zone’s creatures have light-producing organs. Midnight Zone This zone does not get any sunlight. It is extremely dark and very cold. The only light in this zone comes from light-producing animals. © 2007 TIME For Kids, timeforkids.com, World Report Edition. This page may be photocopied for use with students. • Vol. 13, No. 8 • October 26, 2007 Name Date 1. True or false: As the ocean gets deeper, it becomes colder and darker. 2. Explain why there are more living things in the sunlight zone than in any other zone. 3. Where does the small amount of light in the midnight zone come from? 4. Scuba divers do not travel below the sunlight zone. Give at least two reasons why you think this is the case. 5. The word abyss comes from the Greek word for “bottomless.” Why do you think this zone was given that name? 660 feet 3,300 feet 13,100 feet Abyss It is pitch-black and close to freezing at all times here. Only animals that have adapted to the harsh environment can survive.

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READING A DIAGRAM

OCEAN ZONESAt its deepest point, the ocean is more than six miles deep. Scientists categorize layers of the ocean into zones. Study the diagram to learn about the habitat of each zone. Then answer the questions.

Sunlight Zone This zone receives light and heat from the sun. That is why so many plants and animals thrive here. Almost 90% of ocean life is in this zone.

Twilight Zone Very little sunlight reaches this zone. That is why plants cannot grow here. The animals that live here must be able to survive in a cool, dark habitat. Some of the twilight zone’s creatures have light-producing organs.

Midnight Zone This zone does not get any sunlight. It is extremely dark and very cold. The only light in this zone comes from light-producing animals.

Name Date

1. True or false: As the ocean gets deeper, it becomes colder and darker.

2. Explain why there are more living things in the sunlight zone than in any other zone.

3. Where does the small amount of light in the midnight zone come from?

4. Scuba divers do not travel below the sunlight zone. Give at least two reasons why you think this is the case.

5. The word abyss comes from the Greek word for “bottomless.” Why do you think this zone was given that name?

660 feet

3,300 feet

13,100 feet

Abyss It is pitch-black and close to freezing at all times here. Only animals that have adapted to the harsh environment can survive.

Introduce the Ocean Zones

Water and Ocean Structure - Marine Science- Mrs. Ogoogomarinescience.weebly.com/uploads/3/2/3/9/3239894/...Water and Ocean Structure Pure water is a compound- contains two diﬀerent