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Science Worksheet

Instructions

Read each section carefully and complete the activities. You can ask a grown-up for help if you need it!

1. Label the Skeleton

Use the words from the Word Box to fill in the blanks about the skeleton.

Word Box
ribs     skull     spine

The bone that protects your brain is the .

The bones that form a cage to protect your heart and lungs are the .

The long stack of small bones that runs down your back is your .

2. What Does Your Skeleton Do?

Draw a line to match the skeleton's job to its description.

1. Support A. It keeps your important organs like your brain and heart safe from bumps.
2. Protection B. It works with muscles to help you run, jump, and wave.
3. Movement C. It holds your body up so you are not a puddle on the floor!

3. Take Medicines Safely

Read each question and circle the safe choice.

  1. If you feel sick, you should...
    A. Take medicine from the cabinet yourself. B. Tell a grown-up how you feel.
  2. Medicine should only be given to you by...
    A. A trusted grown-up like a parent or a doctor. B. Your friend from school.

4. Mighty Muscles

Fill in the blanks using the words from the Word Box. You can use a word more than once!

Word Box
move     pull     strong

1. Muscles work in pairs to help your body .

2. Muscles can only bones, they cannot push them.

3. Running and playing helps make your muscles .

5. Vertebrates and Invertebrates

Some animals have a backbone (vertebrates) and some do not (invertebrates). Sort the animals below into the correct boxes.

Animal List
Dog    Snail    Fish    Worm    Bird    Jellyfish    Snake    Spider
Vertebrates (have a backbone) Invertebrates (do not have a backbone)

6. The Animal Key

Follow the key to find out what each animal is. Start at the top for each one!

START HERE: Does the animal have legs?

  • YES → Does it have feathers?
    • YES → It is a BIRD.
    • NO → Does it have fur?
      • YES → It is a CAT.
      • NO → It is a SPIDER.
  • NO → Does it live in the water and have fins?
    • YES → It is a FISH.
    • NO → It is a WORM.

Now, use the key to identify these animals:

1. I have 8 legs, but no fur or feathers. I am a .

2. I have no legs, and I do not live in water. I am a .

3. I have legs and I have fur. I am a .

7. Energy Changes Form

Energy can change from one form to another. Draw a line from the object to the correct energy change.

1. A flashlight with batteries A. Electrical Energy → Heat Energy
2. A toaster plugged into a wall B. Chemical Energy (in food) → Movement Energy
3. A person riding a bicycle C. Chemical Energy (in batteries) → Light Energy

Answer Key

1. Label the Skeleton
The bone that protects your brain is the skull.
The bones that form a cage to protect your heart and lungs are the ribs.
The long stack of small bones that runs down your back is your spine.

2. What Does Your Skeleton Do?
1. Support → C. It holds your body up...
2. Protection → A. It keeps your important organs... safe.
3. Movement → B. It works with muscles to help you run...

3. Take Medicines Safely
1. B. Tell a grown-up how you feel.
2. A. A trusted grown-up like a parent or a doctor.

4. Mighty Muscles
1. move
2. pull
3. strong

5. Vertebrates and Invertebrates
Vertebrates: Dog, Fish, Bird, Snake
Invertebrates: Snail, Worm, Jellyfish, Spider

6. The Animal Key
1. SPIDER
2. WORM
3. CAT

7. Energy Changes Form
1. A flashlight... → C. Chemical Energy (in batteries) → Light Energy
2. A toaster... → A. Electrical Energy → Heat Energy
3. A person riding a bicycle → B. Chemical Energy (in food) → Movement Energy

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