Ocean Layers Exploration
Explore the different layers of the ocean, their characteristics, and the unique life forms that inhabit them in this Grade 7 science worksheet.
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Ocean Layers Exploration
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Read each question carefully and answer to the best of your ability. Refer to the diagram of the ocean layers as needed.
Observe the diagram below showing the different layers of the ocean.
1. Which ocean layer receives the most sunlight?
Abyssal Zone
Sunlight Zone
Midnight Zone
Twilight Zone
2. As you descend deeper into the ocean, what generally happens to the temperature and pressure?
Temperature increases, pressure decreases
Temperature decreases, pressure increases
Both temperature and pressure increase
Both temperature and pressure decrease
3. The zone where some light penetrates, but not enough for photosynthesis, is called the zone.
4. Organisms in the deepest parts of the ocean often rely on for energy, rather than sunlight.
5. Describe two adaptations that animals living in the Hadal zone might have to survive the extreme conditions.
6. All ocean layers have abundant plant life due to sunlight penetration.
True
False
7. The Sunlight Zone is also known as the Epipelagic Zone.
True
False
Match each ocean layer with its description.
8. Sunlight Zone
a. Deepest ocean trenches
9. Twilight Zone
b. Receives enough light for photosynthesis
10. Midnight Zone
c. Faint light, but no photosynthesis
11. Hadal Zone
d. Complete darkness and very cold
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