The deep sea
6 free practice questions with explanations
PassNova has 6 free Kids Oceans & Tides practice questions on The deep sea, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
The deep sea: example questions & answers
6 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
What is it like at the very bottom of the deep sea?
- ABright and sunny
- BFull of trees
- CVery dark and cold✓
- DWarm like a bath
Answer: Sunlight cannot reach the deep sea, so it is dark and cold down there.
How do some deep-sea fish make their own light in the dark?
- ATheir bodies can glow✓
- BThey swallow the sun
- CThey carry torches
- DThey light candles
Answer: Some deep-sea animals can make their own glowing light to see and find food.
Why can't ordinary plants grow at the very bottom of the deep sea?
- AThere is no sunlight down there✓
- BThere are too many boats
- CIt is too noisy
- DThe water is too clean
Answer: Plants need sunlight to grow, and no sunlight reaches the deep dark sea.
How do people explore the very deep parts of the ocean?
- AOn a bicycle
- BIn a hot air balloon
- CIn special deep-sea submarines✓
- DBy walking down there
Answer: Strong little submarines carry explorers safely down to the deep sea.
Compared with the top of the sea, the deep sea is what?
- AWarmer
- BFull of sunshine
- CHigher up in the air
- DMuch deeper down✓
Answer: The deep sea is a long, long way down beneath the surface of the water.
Which giant sea creature with long arms lives deep in the ocean?
- AThe ladybird
- BThe giant squid✓
- CThe goldfish
- DThe seahorse
Answer: The giant squid is a large deep-sea animal with long arms called tentacles.