Simple 4th Grade Science Projects for Kids

Simple 4th Grade Science Projects for Kids:- Science can sometimes be tricky, especially with all the big ideas in chemistry, physics, and biology. But the truth is, science doesn't have to be hard at all, it can actually be a lot of fun! Simple 4th grade science projects are a great way to make those tough concepts easier to understand. When kids try hands-on experiments, like making a volcano erupt or creating a battery from a lemon, they get to see science in action. 

These projects use everyday things like baking soda, balloons, and water, turning learning into an exciting adventure. Not only do these activities make science clearer, but they also help kids get curious, ask questions, and start thinking like little scientists. So, instead of being scared of science, kids can learn how cool it really is by trying simple, fun projects that are perfect for their age. Check out these experiments for class 4 below.

Check out: PW Activity Kits

Simple 4th Grade Science Projects for Kids

Go through the experiments for class 4 here:- 

1. Balloon-Powered Car

Ingredients:

• A balloon

• A plastic bottle

• Straws

• Bottle caps (4 for wheels)

• Tape and scissors

Process:

1. Take the plastic bottle and cut a small hole for the straw to pass through.

2. Tape two pieces of straws across the bottom of the bottle. These will hold the wheels in place.

3. Attach bottle caps to the straws to act as wheels.

4. Tape a balloon securely onto one end of another straw and insert the other end through the hole in the bottle.

5. Blow air into the balloon, pinch it closed, and place the car on a flat surface. Release the balloon and watch your car zoom forward!

Result: The car moves forward because the air escaping from the balloon pushes it in the opposite direction. This is an exciting 4th grade science project idea to learn about motion and forces. It’s a great for last-minute 4th grade science project.

2. Baking Soda and Vinegar Rockets

Ingredients:

• Baking soda

• Vinegar

• A plastic bottle

• A cork or balloon

• Tape

Process:

1. Fill the bottle halfway with vinegar.

2. Wrap baking soda in a small piece of tissue and drop it into the bottle.

3. Quickly seal the bottle with a cork or balloon.

4. Step back and watch the reaction create a powerful launch.

Result: The vinegar reacts with the baking soda to produce carbon dioxide gas, which builds up pressure and makes the bottle rocket launch. This is an ideal experiment for Class 4, and one of the coolest 4th grade science projects ideas for kids who love action-packed experiments.

3. Potato Battery

Ingredients:

• 2 potatoes

• Copper wire

• 2 nails

• A small LED bulb

Process:

1. Insert a nail into each potato.

2. Place a piece of copper wire into each potato, away from the nail.

3. Use another piece of wire to connect one potato’s nail to the copper wire of the second potato.

4. Connect the remaining wire and nail to the LED bulb and watch it light up!

Result: The potato acts as a natural battery, creating electricity to power the bulb. This is one of the good 4th grade science projects for Class 4 and 5 that teaches kids about energy and circuits.

Check out: Electricity & Magnetism Science Project Kit

4. Salty Water and Floating Egg

Ingredients:

• 2 glasses of water

• Salt

• 1 egg

Process:

1. Fill one glass with plain water and the other with saltwater. (Add lots of salt and stir until it dissolves.)

2. Gently place an egg in each glass. Observe what happens.

Result: The egg sinks in plain water but floats in salty water because the salt makes the water denser. This is a fantastic idea, especially last-minute 4th grade science project.

5. Turn Milk into Plastic

Ingredients:

• Warm milk

• Vinegar

• A bowl and spoon

Process:

1. Pour some warm milk into a bowl and add a few spoons of vinegar.

2. Stir the mixture until the milk curdles and forms lumps.

3. Drain the liquid, take the solid curd, and shape it into an object like a bead or small figure.

4. Let it dry overnight.

Result: The milk reacts with the vinegar to form casein, which hardens like plastic. This simple experiment for Class 4 introduces kids to chemistry in a creative way.

6. Balloon Jumping Robot

Ingredients:

• A balloon

• Rubber bands

• A small plastic cup

• Tape and scissors

Process:

1. Tape rubber bands to the bottom of a small plastic cup.

2. Stretch the rubber bands over the opening of the cup.

3. Blow up the balloon and hold it against the rubber bands.

4. Release the balloon to see the cup jump like a robot!

Result: The stretched rubber bands store energy, which makes the cup jump when released. This fun project is perfect for 4th grade science projects ideas.

7. Hydroponics: Gardening Without Soil

Ingredients:

• A plastic cup

• Water

• A small plant or seed

• A paper towel

Process:

1. Fold a paper towel and place it in the cup.

2. Add water to keep the paper towel damp.

3. Place a seed on the paper towel and keep the cup in sunlight.

4. Observe the plant growing without soil!

Result: This project shows how plants can grow using only water and nutrients, without soil. It’s an easy and educational experiment for Class 4 and 5.

Check Out: Light, Shadow & Optical Instruments Project Kit

8. Marble Spacecraft Shield

Ingredients:

• A small container

• Foil

• Cotton or sponge

• Marbles

Process:

1. Line a small container with foil and add a layer of cotton or sponge.

2. Drop marbles onto the container from different heights.

3. Observe how well the shield protects the container.

Result: The cotton absorbs the impact, showing how spacecraft shields protect against space debris. This is an exciting 4th grade science project idea.

9. Electromagnet Power

Ingredients:

• A large nail

• A long wire

• A battery

• Paper clips

Process:

1. Wrap the wire tightly around the nail.

2. Connect the ends of the wire to a battery.

3. Use the nail to pick up paper clips or small metal objects.

Result: The electricity turns the nail into a magnet, which attracts metal objects. This is a wonderful way to learn about electricity science through 4th grade science projects ideas.

10. Make Ice Cream in a Bag

Ingredients:

• Milk

• Sugar

• Ice cubes

• Salt

• Ziplock bags

Process:

1. Mix milk and sugar in a small ziplock bag.

2. Place this bag inside a larger bag filled with ice cubes and salt.

3. Shake the bags vigorously for 5-10 minutes.

4. Open the bag to enjoy your homemade ice cream!

Result: The salt lowers the temperature of the ice, freezing the milk into ice cream. 

11. Lemon Battery

Ingredients:

• 1 lemon

• 1 zinc nail

• 1 copper coin or wire

• Small LED light

• Connecting wires

Process:

1. Roll the lemon gently on a table to loosen its juices inside.

2. Insert the zinc nail and copper coin (or wire) into the lemon, keeping them a few centimetres apart.

3. Use the connecting wires to attach the zinc nail to one end of the LED and the copper to the other end.

4. Observe as the LED light glows!

Result: The lemon creates a small amount of electricity through a chemical reaction between the zinc and copper. This project is a fantastic way to learn about electricity science in a fun and hands-on way.

Check out: 150+ Science Explorer Kit

12. Mini Volcano

Ingredients:

• Baking soda

• Vinegar

• Dish soap

• Red food colouring (optional)

• A small bottle or cup

Process:

1. Place the small bottle or cup in the centre of a tray or outdoor surface to catch any spills.

2. Add 2-3 spoons of baking soda into the bottle.

3. Add a few drops of dish soap and red food colouring for a lava effect.

4. Slowly pour vinegar into the bottle and watch the volcano erupt!

Result: The chemical reaction between baking soda and vinegar produces carbon dioxide gas, creating a foamy explosion. This simple yet exciting experiment for Class 4 is perfect for exploring chemistry concepts.

13. Magnetic Maze

Ingredients:

• A magnet

• A small metal paperclip or toy

• A sheet of cardboard

• Marker and ruler

Process:

1. Use the marker and ruler to draw a maze on the sheet of cardboard.

2. Place the paperclip or toy at the starting point of the maze.

3. Hold the magnet underneath the cardboard and guide the paperclip through the maze to the finish.

Result: The magnet attracts the metal paperclip, allowing you to control its movement. This is a creative and interactive 4th grade science project for Class 4 and 5, teaching kids about magnetism.

14. Rainbow in a Glass

Ingredients:

• Sugar

• Water

• Food colouring (at least 4 colours)

• A clear glass

• A spoon

Process:

1. Prepare 4 cups of water and mix different food colouring into each.

2. Add increasing amounts of sugar to each cup (e.g., 1 spoon in the first, 2 in the second, etc.) and stir until dissolved.

3. Slowly pour the coloured water into a clear glass, starting with the heaviest (most sugary) layer.

4. Carefully add the other layers using a spoon or a tilted glass to avoid mixing.

Result: The layers of coloured water form a rainbow because liquids with different densities do not mix easily. This experiment is visually stunning and ideal for 4th grade science projects ideas.

Also Check, STEM Kits

15. Balloon Static Electricity

Ingredients:

• 1 balloon

• Small paper pieces or tissue bits

• A woollen cloth

Process:

1. Blow up a balloon and tie it securely.

2. Rub the balloon vigorously with a woollen cloth to create static electricity.

3. Bring the balloon close to the small paper pieces or tissue bits and watch them stick to it!

Result: Rubbing the balloon creates static electricity, attracting lightweight objects like paper. 

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4th grade science projects FAQs

1. What are some easy 4th grade science projects?

Easy projects include creating a lemon battery, building a mini volcano, making a magnetic maze, or conducting a static electricity experiment with a balloon. These are simple to set up and fun for kids.

2. How do these projects relate to science concepts?

Each project demonstrates basic scientific principles:

• Lemon battery show how electricity science works.

• Mini volcano teach chemical reactions.

• Magnetic maze explores magnetism.

3. Can these projects be done at home?

Yes, most of these experiments can be done using items easily available at home, such as lemons, vinegar, baking soda, or balloons.

4. What if I need a last-minute 4th grade science project?

Quick ideas include the balloon static electricity experiment, the lemon battery, or the mini volcano. These can be set up in just a few minutes.

5. Are these experiments safe for children?

Yes, these experiments are safe when performed under adult supervision. Ensure that sharp objects like nails are handled carefully, and chemicals like vinegar are kept away from the eyes.