Cool Reading - CK3P10

The five traditional human senses are: taste, smell, touch, hearing, and sight. We use our senses all the time.

Taste Which parts of the body do you use to taste? That’s right! Your tongue and your brain. But you also need your nose. 75% of your taste comes from your sense of smell!

Did you know‌ that flies taste with their feet?

Quick Experiment Hold your nose. Now, taste something. Taste it again without holding your nose. When you hold your nose, you taste less.

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Smell You smell with your nose. Sharks can smell a drop of blood over a kilometer away!

Did you know‌ that girls have a better sense of smell than boys?

Top smells!

Freshly baked bread

Summer rain on wet earth

A sea breeze

What are some of your favorite smells?

Popcorn

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Touch Touch is how you feel things on your skin.

Some parts of your body are more sensitive than others. Your lips and your hands are very sensitive.

Your back is less sensitive.

Quick experiment Open a paper clip. Touch your skin with the two points. Start with the points close together. Then, open the points so they are wider apart. Where your skin is more sensitive, you can feel the points very close together. Where your skin is less sensitive, you can only feel two points when they are wide apart.

Hearing You use your ears to hear sounds.

Sound waves go into your ear. Then, your brain interprets the sounds.

Did you know‌ that the smallest bone in your body is in your ear? It is called the stirrup.

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Sight Light enters your eye through the pupil (the black circle). Your eye sends a message to your brain. And your brain interprets what you see.

Did you know‌ that a chameleon can see in two directions at the same time?

Quick experiment Try cupping your hands behind your ears.

Can you hear more? Horses have bigger ears than humans, so they have better hearing.

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Other Human Senses Humans have other senses.

They include: temperature, balance, movement, and pain.

Temperature You can feel heat.

Balance You use balance to ride a bicycle.

Movement You can feel movement. For example, you can feel a bus go faster or slower.

Pain You feel pain when you hurt yourself. Your nerves send a message to your brain.

Pain helps you to not hurt yourself.

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Super Animal Senses!

Some animals have senses that humans don’t have. Check out these super senses!

Electrical Fields All animals produce electricity— even you! Dolphins and sharks can sense electricity. So dolphins and sharks can hunt, even when they cannot see anything.

Sonar Many bats cannot see very well. They use sound waves (sonar) to know where they are going.

Some fishing boats use sonar to find fish.

Magnetic Fields Bees and birds use the Earth’s magnetic fields. They sense where they need to fly, so they do not need a map!

Infrared Some snakes, like the rattlesnake, cannot see well. But they can sense infrared waves (heat). Rattlesnakes know where their prey is because they can feel its body heat.

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Worksheet 10 Your Senses 1 Label the pictures.

2 Match the pictures with the senses. taste sight smell hearing touch

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3 Complete the crossword with senses.

Across 4. Bees and birds use them.

5. Some fishing boats use it to find fish.

Down 1. You use it to feel heat.

2. It helps you to not hurt yourself.

3. You use it to ride a bike.

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4 Look at the pictures. What sense would you use?

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