[KET] 🐾 Physics explains how snakes climb and stand without limbs

Physics explains how snakes climb and stand without limbs

🎧 Listen to today’s story

📚 Key Words

Word Meaning 中文
muscles Parts inside the body that help you move. 肌肉
climb To go up toward the top of something. 攀爬
branch A part of a tree that grows out from the trunk. 树枝
energy The power to do work or move. 能量
scientists People who study how the world works. 科学家
straight Not bending or curving; in a direct line. 直的
tightly In a way that is very firm and strong. 紧紧地
amazing Something that is very surprising and good. 令人惊叹的

📖 Read the story

Snakes are amazing animals. They do not have arms or legs, but they can climb very high trees. How do they do it? Scientists studied brown tree snakes to find out. Snakes use their strong muscles to move up. A snake bends its body like the letter S. It holds the tree tightly with the bottom part of its body. Then, it pushes the top part of its body up. It looks like a long, moving rope. This way of moving helps snakes go from one branch to another branch. They do not fall because they are very strong. They also save their energy so they do not get tired. Some snakes can even lift most of their body into the air! It is wonderful to see how snakes move without any feet. They are very smart and use their bodies in a special way.

✏️ Answer the questions

1. What is special about snakes in this story?

  • A.They have many legs.
  • B.They can fly between trees.
  • C.They can climb without arms or legs.
  • D.They like to eat wood.

2. What shape does a snake make when it climbs?

  • A.The letter O
  • B.The letter S
  • C.The letter T
  • D.The letter X

3. How does the snake stay on the tree without falling?

  • A.It uses its strong muscles.
  • B.It uses glue on its skin.
  • C.It holds on with its teeth.
  • D.Another snake helps it.

4. Why do snakes move carefully?

  • A.They are afraid of birds.
  • B.They want to find a friend.
  • C.They want to save their energy.
  • D.They are looking for water.

5. Which snakes did the scientists study?

  • A.Small sea snakes
  • B.Brown tree snakes
  • C.Fast garden snakes
  • D.Very old snakes