Science Worksheet for 11-Year-Olds — Engaging STEM Activities

Instructions

Read the instructions for each section carefully and write your answers in the spaces provided. Good luck, scientist!

Part 1: Planet Scramble

Unscramble the letters to reveal the names of the eight planets in our solar system.

1. CURMERY: _________________________
2. ENVUS: _________________________
3. TRAHE: _________________________
4. RAMS: _________________________
5. PRITEJU: _________________________
6. TURSAN: _________________________
7. SURANU: _________________________
8. PENTUEN: _________________________

Part 2: What's the Matter?

Everything is made of matter, which comes in three main states. Draw a line to match the description to the correct state of matter.

Part 3: Ecosystem Fill-in-the-Blanks

Complete the paragraph below using the words from the word bank. Each word is used only once.

In any ecosystem, all living things have a role. A plant is a ____________________ because it uses sunlight to make its own food. An animal that eats the plant is called a ____________________. When plants and animals die, organisms like fungi and bacteria act as ____________________, breaking them down and returning nutrients to the soil. The natural environment where an organism lives, which provides it with food, water, and shelter, is its ____________________.

Part 4: Odd One Out

In each group below, circle the word that does not belong with the others and briefly explain why.

1. Group: Heart, Artery, Stomach, Vein

   Odd one out: _________________________

   Reason: ___________________________________________________________

2. Group: Root, Stem, Flower, Lung

   Odd one out: _________________________

   Reason: ___________________________________________________________

3. Group: Conductor, Insulator, Copper, Circuit

   Odd one out: _________________________

   Reason: ___________________________________________________________

Answer Key

Part 1: Planet Scramble

1. MERCURY
2. VENUS
3. EARTH
4. MARS
5. JUPITER
6. SATURN
7. URANUS
8. NEPTUNE

Part 2: What's the Matter?

• Has no fixed shape or volume. → GAS
• Has a fixed shape and a fixed volume. → SOLID
• Molecules are far apart and move very quickly. → GAS
• Takes the shape of its container but has a fixed volume. → LIQUID
• Molecules are packed tightly and vibrate. → SOLID
• Molecules can slide past one another. → LIQUID

Part 3: Ecosystem Fill-in-the-Blanks

In any ecosystem, all living things have a role. A plant is a producer because it uses sunlight to make its own food. An animal that eats the plant is called a consumer. When plants and animals die, organisms like fungi and bacteria act as decomposers, breaking them down and returning nutrients to the soil. The natural environment where an organism lives, which provides it with food, water, and shelter, is its habitat.

Part 4: Odd One Out

1. Odd one out: Stomach

   Reason: The others are all parts of the circulatory system.

2. Odd one out: Lung

   Reason: The others are all parts of a plant.

3. Odd one out: Copper

   Reason: Copper is a specific example of a material, while the others are general terms related to electricity. (Alternate valid answer: Circuit is the odd one out because the others describe properties/types of materials related to electricity.)