Nosebleeds Science Worksheet for 10-Year-Olds — Causes, How It Happens & First-Aid Quiz

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Instructions

Read through the information about the amazing human nose! Then, use what you've learned to answer the questions and complete the activities. Let's explore the science behind a common nosebleed!

Part 1: Your Nose - A Super Sensitive Place!

Have you ever wondered why nosebleeds happen? It's all about what's inside your nose! The inside of your nose is lined with a moist, thin layer of skin called a mucous membrane. This membrane is like a superhighway of tiny, delicate blood tubes called capillaries.

These capillaries are very close to the surface, which helps warm the air you breathe. But because they are so close to the surface and so fragile, they can break easily. When a capillary breaks, you get a nosebleed!

Part 2: Why Do Nosebleeds Happen? - The Triggers

Nosebleeds can be a surprise, but they usually have a simple cause. Let's look at some common triggers. Read the list below and circle the ones you think are common causes of a nosebleed.

  • A) Breathing very cold or dry air
  • B) Reading a book quietly
  • C) Blowing your nose very hard
  • D) A small bump or knock to the nose
  • E) Eating an apple
  • F) Picking your nose
  • G) Allergies or a cold that irritates your nose
  • H) Watching television

Part 3: What to Do? - The Nosebleed Action Plan!

If you or a friend gets a nosebleed, don't panic! Knowing the right steps makes it easy to handle. Unscramble the bold words to complete the correct first aid steps.

  1. Stay calm and TSI down.
  2. Lean slightly DAFORWR. (Important: Leaning back can make the blood go down your throat!)
  3. Gently HCNIP the soft part of your nose, just below the bony part.
  4. Breathe through your THUOM.
  5. Hold the pinch for at least 10 minutes without letting go. An adult can help you keep EMTI.

Part 4: Science Quiz Time!

Let's see what you've learned. Answer the questions below.

1. Fill in the Blanks:

The inside of your nose is lined with many tiny blood , which are very fragile and close to the surface.

2. True or False?

Write 'T' for True or 'F' for False in the brackets.

  • [   ] When you get a nosebleed, you should tilt your head all the way back.
  • [   ] Nosebleeds are very common and usually not dangerous.
  • [   ] Dry air can make you more likely to get a nosebleed.
3. What Would You Do?

Your friend gets a nosebleed while playing outside. They start to lean their head back. What is the first thing you should tell them to do instead?

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Answer Key

Part 2: Why Do Nosebleeds Happen?

You should have circled the following letters:

A, C, D, F, G

Part 3: What to Do?

  1. SIT
  2. FORWARD
  3. PINCH
  4. MOUTH
  5. TIME

Part 4: Science Quiz Time!

1. Fill in the Blanks: vessels (or capillaries)

2. True or False?

  • [ F ] When you get a nosebleed, you should tilt your head all the way back.
  • [ T ] Nosebleeds are very common and usually not dangerous.
  • [ T ] Dry air can make you more likely to get a nosebleed.

3. What Would You Do?

Tell them to sit down and lean slightly FORWARD, not backward.

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