Grade 3 Science Worksheets for 8-Year-Olds: Plants, Human Body & Matter

Instructions

Read each question carefully and write your answer in the space provided. Try your best!

Part 1: All About Plants

A. Label the Plant Parts

Use the words in the box to label the main parts of a plant.

1. The part that makes seeds and fruit: _________________________

2. The part that soaks up water and nutrients from the soil: _________________________

3. The part that makes food for the plant using sunlight: _________________________

4. The part that holds the plant up and carries water to the leaves: _________________________

B. What Do Plants Need to Grow?

Circle all the things a plant needs to live and grow.

Part 2: Your Amazing Body

C. Organ Match-Up

Draw a line to match each organ to its main job.

Part 3: What's the Matter?

D. Solid, Liquid, or Gas?

Look at each item below. Write S for Solid, L for Liquid, or G for Gas.

1. A rock: _____

2. Milk: _____

3. Air inside a balloon: _____

4. An ice cube: _____

5. Juice: _____

6. Steam from a kettle: _____

Part 4: Mix It Up!

E. How to Separate Mixtures

Circle the best tool or method to separate each mixture.

1. To separate iron filings from sand, you should use a...

• A) Filter
• B) Magnet
• C) Spoon

2. To separate sand from water, you should use...

• A) A magnet
• B) Your hands
• C) A filter (like a coffee filter)

F. Soluble or Insoluble?

Fill in the blank with the word soluble or insoluble.

1. Salt disappears when you stir it into water. Salt is __________________.

2. Small pebbles do not disappear in water. Pebbles are __________________.

Answer Key

Part 1: All About Plants

A. Label the Plant Parts

1. Flower
2. Roots
3. Leaf
4. Stem

B. What Do Plants Need to Grow?

The words to be circled are: Sunlight, Water, Air, Soil.

Part 2: Your Amazing Body

C. Organ Match-Up

• Brain → The control center; helps you think and feel.
• Heart → Pumps blood all around your body.
• Lungs → Helps you breathe in air.
• Stomach → Breaks down food with special juices.
• Intestines → Takes the good stuff (nutrients) from your food.

Part 3: What's the Matter?

D. Solid, Liquid, or Gas?

1. S
2. L
3. G
4. S
5. L
6. G

Part 4: Mix It Up!

E. How to Separate Mixtures

1. B) Magnet
2. C) A filter (like a coffee filter)

F. Soluble or Insoluble?

1. soluble
2. insoluble