Bioluminescence in Nature | Elementary ESL Worksheet PDF
Free, classroom-ready, one click — includes answer key on page 3.
Reading Worksheet — Elementary (C) | tahricteaches.com
Some living things can make their own light. This light is called bioluminescence. It is not hot like fire. It is a soft, cool glow. We can see this light at night. Bioluminescence happens in the sea and on land. Many animals use it to live and stay safe.
The deep океан is very dark. The sun cannot reach the bottom. But the water is not empty. Many существа there make their own light. Some fish have lights on their heads. They glow blue or green in the dark water.
On land, the firefly is famous for its light. On warm summer nights, fireflies fly in the air. Their small lights blink on and off. They use the light to find a friend. Many people love to watch them.
Why do animals make light? Some use light to find food. The light can attract small fish or bugs. When the food comes close, the animal can eat it. Other animals use light to scare away enemies. This keeps the animal safe. Light is a useful tool for many animals.
Animals make light with a chemical inside their bodies. The chemical mixes with air and makes a glow. This is a clever trick from nature. Scientists study these animals to learn more. Their natural light is truly amazing.
А. Словарь
- glow ____
- ocean ____
- dark ____
- firefly ____
- creature ____
- attract ____
- chemical ____
- signal ____
- deep ____
- nature ____
- a. very large body of salt water
- b. world of plants, animals, and land around us
- c. substance that can mix and react to make something new
- d. small flying insect that makes light at night
- e. having little or no light
- f. living animal
- g. make something come closer
- h. sign or action that sends a message
- i. soft, steady light that is not hot
- j. far down from the top
Б. Верно или неверно
- ____ Bioluminescence is a kind of light.
- ____ The light from bioluminescence is very hot.
- ____ The deep ocean is very dark.
- ____ The sun reaches the bottom of the deep ocean.
- ____ Fireflies make light at night.
- ____ Fireflies live deep in the ocean.
- ____ Some animals use light to find food.
- ____ Animals make light with a chemical inside their bodies.
- ____ No animals use light to scare away enemies.
- ____ Bioluminescence happens only on land.
C. Заполните пропуски
- The deep ___ is full of animals that make light.
- A ___ blinks its small light on summer nights.
- Some animals use light to ___ small fish or bugs.
- The soft, cool light that animals make is called a ___.
- The bottom of the deep sea is very ___.
D. Вопросы на понимание текста
- Why is the deep ocean dark?
- How do fireflies use their light?
- How do animals make their own light?
Е. Вопросы для обсуждения
- Would you rather see fireflies on land or glowing animals in the ocean? Why?
- If you could glow in the dark, when would you use your light?
Answer Key (click to reveal)
А. Словарь: 1-i, 2-a, 3-e, 4-d, 5-f, 6-g, 7-c, 8-h, 9-j, 10-b
Б. Верно/Неверно: 1-T, 2-F, 3-T, 4-F, 5-T, 6-F, 7-T, 8-T, 9-F, 10-F
C. Заполните пропуски: 1-ocean, 2-firefly, 3-attract, 4-glow, 5-dark
D. Понимание:
- The deep ocean is dark because the sun cannot reach the bottom.
- Fireflies use their light to find a friend.
- They make light with a chemical inside their bodies that mixes with air.
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