Here are 10 wonder-filled, hands-on science experiments for children’s ministry to illuminate God’s powerful presence in kids’ lives.

Faith and science have a lot in common. Both can be messy, explosive, and mysterious. Kids question both, test both, and ponder the wonder of things that, at first glance, might not make much sense. In the process of learning about science, kids are quickly captivated, embarking on their own discoveries. So goes faith: Once kids get a taste of our intriguing, real-deal God, they just can’t get enough.

Science is God-inspired, and it’s a lot of fun. So why not tap into your kids’ natural curiosity to help them discover fascinating scientific facts—while at the same time growing their understanding of biblical truths? Come on—grab your lab coat! We’ve got 10 experiments for kids to help them discover how their faith connects with the wonders of God’s amazing universe.

Science Experiment #1: Calm in the Storm

Build a tornado tube to remind kids they can rely on God in any situation.

Bible Connect: Luke 8:22-25
Best for: Ages 8 to 12
Stuff Per Group:

• two 2-liter plastic soft drink bottles
• water
• one 1-inch metal washer
• duct tape
• food coloring
• glitter

Try the Experiment

Say: Let’s recreate a terrifying force in nature to see how it works.

• Fill one bottle two-thirds full with water.
• Add food coloring and glitter to the water.
• Put the metal washer on the bottle mouth, then place the second bottle upside down on the first bottle so the mouths are connected by the washer.
• Tightly wrap several layers of duct tape around the bottle mouths to secure them, creating a tornado tube.
• Test the tube to ensure no water leaks.
• Turn the bottle over, start the tornado by swirling the top bottle, and watch the water simulate a tornado as it swirls down.

Talk About It

Have kids talk about how they’d feel if they were in a tornado and then describe a situation when they were afraid. Ask:

• What made that situation scary?
• What did you do?

Read Luke 18:22-25. Ask:

• Tell about a time you felt like the disciples did.
• How easy or difficult is it to trust God when you’re afraid? Why?
• What’s a good way to remember we can trust God the next time we feel afraid?

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Science Experiment #2: Dancing Raisins

Remind kids how fun it is to praise God.

Bible Connect: Psalm 149:3-4
Best for: Ages 6 to 12
Stuff Per Group:

• raisins
• clear plastic cups
• carbonated water

Try the Experiment

Ask: I wonder…can raisins dance?

• Fill a cup with carbonated water and drop in several raisins.
• Ask kids to hypothesize about what’ll happen.
• Watch for a few minutes to see what the raisins do.
• Then enjoy a raisin snack.

Talk About It

Ask:

• What did or didn’t go the way you’d guessed?
• Why did the raisins dance?

Read Psalm 149:3-4. Ask:

• Are the bubbles like or unlike how God wants us to praise him?
• How can we praise God with enthusiasm every day?

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Science Experiment #3: Wonder Clouds

This experiment reminds kids that Jesus will return to earth.

Bible Connect: Revelation 1:7-8
Best for: Ages 6 to 12
Stuff Per Group:

• one wide-mouth glass jar with a metal lid
• water
• ice cubes
• flashlight

Try the Experiment

Ask: Do you think it’s possible to create a cloud right in this room? Let’s find out.

• Pour 3 inches of hot water into the jar and quickly put on the lid.
• Leave it for 5 to 10 minutes, then place several ice cubes on top of the lid.
• Turn off the light and ask kids to hypothesize about what they’ll see.
• Shine a flashlight behind the jar to reveal the cloud.

Talk About It

Ask:

• What do you discover when you compare your guess to what you saw happen?
• What surprised you about this experiment?

Read Revelation 1:7-8. Ask:

• What surprises you about what the Bible says about Jesus in the clouds?
• Do you think Jesus will return in your lifetime? Why or why not?
• If Jesus came back today, what would you do?

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Science Experiment #4: Impossible Possibility

Help kids remember that God is always with us, even if we can’t see him.

Bible Connect: 1 Timothy 1:15-17
Best for: Ages 6 to 12
Stuff Per Group:

• a balloon
• yeast
• sugar
• water
• glass jar
• a funnel
• an empty glass drink bottle

The Experiment

Ask: Can something invisible have visible results?

• Mix 1 tablespoon of yeast, 1 teaspoon of sugar, and 1 cup warm (not hot) water in the glass jar.
• Use a funnel to pour the mixture into the bottle.
• Ask kids to hypothesize about what’ll happen to the balloon when you stretch it over the bottleneck.
• Then watch as the balloon inflates.

Talk About It

Ask:

• What did you observe that showed your guess was right or not quite?
• Is it easy or difficult to understand something you can’t see, such as the carbon dioxide? Explain.
• How would you explain how carbon dioxide works?
• How would you explain our invisible God to someone?

Read 1 Timothy 1:15-17. Ask:

• Is it easy or difficult to have faith in a God you can’t see? Why or why not?
• How can you explain your faith in God so others understand?

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Science Experiment #5: Shine

Kids create a starry sky while discovering that they can be a light in the world.

Bible Connect: Philippians 2:14-16
Best for: Ages 6 to 12
Stuff for Each Child:

• cardboard oatmeal container
• a nail
• hammer
• scrap wood
• flashlight

Try the Experiment

Say: Let’s see if we can recreate God’s fantastic nighttime sky right here.

• Place oatmeal containers on scrap wood to protect floors.
• Have adults help kids use a hammer and nail to gently punch holes in the bottoms of the oatmeal containers.
• Turn out the lights.
• Kids can put their flashlights inside their containers and enjoy the planetarium they’ve created on the ceiling or wall.

Talk About It

Ask:

• What would night be like without stars?

Read Philippians 2:14-16. Ask:

• Why do you think God wants us to be lights on earth?
• How would our world be without God’s faithful people?
• How can you be a light for God?

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Science Experiment #6: What Lies Beneath

Remind kids that God looks at the heart.

Bible Connect: 1 Samuel 16:7
Best for: Ages 6 to 12
Stuff Per Child:

• large coffee filter
• scissors
• black nonpermanent marker
• water

The Experiment

Ask:

• Can you find a rainbow in a black marker?

Cut out the center bottom of a coffee filter and color a coin-size black dot in the center. Have kids hypothesize about what’ll happen when they add water to the dot. Drop 10 drops of water onto the black dot and watch as a rainbow of colors spreads.

Talk About It

Ask:

• Tell why your guess was correct or incorrect.
• What happened when you added water?
• Describe anything you saw that surprised you.
• How is this experiment like or unlike you?

Read 1 Samuel 16:7. Ask:

• Do you have qualities others don’t see? Explain.
• Do you think God sees those qualities? Explain.
• How does it feel to know God looks at your heart rather than outward appearance?

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Science Experiment #7: Sticky Friends

This sticky activity helps kids appreciate the gift of friends.

Bible Connect: Proverbs 18:24
Best for: Ages 6 to 12
Stuff for Each Child:

• a balloon
• small scraps of paper or threads.

Try the Experiment

Ask:

• Can an invisible bond make everyday objects stick together?

Inflate a balloon and tie it. Rub it on your clothing, and stick it to a wall. Rub the balloon more, and hold it over small pieces of paper or thread. The objects will stick to the balloon.

Talk About It

Ask:

• Why did some things stick and others didn’t?

Read Proverbs 18:24. Ask:

• How was this experiment like or unlike our friendships?
• What qualities do you look for in a friend?
• Have you experienced friendships that didn’t stick? Explain.
• What qualities form lasting friendships?
• What makes Jesus our forever friend?
• How can you be a friend who, like Jesus, sticks with someone no matter what?

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Science Experiment #8: Stay Afloat

Explore why objects float—and how faith makes the impossible possible.

Bible Connect: Matthew 17:14-20
Best for: Ages 6 to 12
Stuff Per Group:

• 2 glass pint jars
• an egg
• a spoon
• 4 ounces of salt
• small objects
• water

Try the Experiment

Ask: Do you think a single ingredient, such as salt, can totally change a situation? Let’s see what we can find out about that.

• Fill one jar with water and carefully place an egg in the water. Talk with kids about what you all observe happening.
• Fill a second jar with water and mix in 4 ounces of salt to simulate the salt concentration in the Dead Sea.
• Ask kids to hypothesize about whether the egg will float in the second jar.
• Remove the egg from the first jar and place it in the saltwater.
• Then experiment with other objects, placing some in tap water and some in saltwater to see what floats in each.
• Carefully retrieve the eggs so they’re not wasted.

Talk About It

Ask:

• What differences did you observe when you placed the objects in the saltwater and tap water?
• Before this experiment, did you think it was possible for an egg to float in water? Why or why not?

Read Matthew 17:14-20. Ask:

• How do you think the disciples felt when Jesus said faith could move a mountain?
• When have you had to have faith in something that seemed impossible?

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Science Experiment #9: Oil and Water

Explore the importance of relationships.

Bible Connect: 2 Corinthians 6:14-18
Best for: Ages 6 to 12
Stuff Per Group:

• a clear jar with a lid
• vegetable oil
• food coloring
• water

Try the Experiment

Ask: Do you think liquids always mix? Let’s find out.

• Fill the jar halfway with water.
• Put in two drops of food coloring.
• Ask kids to guess what’ll happen when oil is added.
• Add oil and screw on the lid tightly.
• Shake the jar, turn it upside down, and observe how the oil and water react.

Talk About It

Ask:

• Tell about what you guessed would happen.
• What did you observe about the oil and the water when you tried to mix them?
• Do you think there’s ever a situation when water and oil will mix? Explain.

Read 2 Corinthians 6:14-18. Ask:

• How is this experiment like or unlike what happens when we hang out with people who don’t believe in Jesus?
• Do you think it’s okay to hang out with people who have different beliefs than you? Why or why not?
• What do you think God would tell us about being friends with people who have different beliefs?

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Science Experiment #10: Explosive Power

Help kids understand God’s power. This activity is messy, so do it outdoors.

Bible Connect: Romans 1:20
Best for: Ages 6 to 12
Stuff Per Group:

• Red modeling clay
• one 15×15-inch piece of cardboard
• aluminum foil
• one 20-ounce plastic bottle
• baking soda
• dishwashing liquid
• water
• red food coloring
• bowls
• a funnel
• white vinegar

Try the Experiment

Say: Let’s find out what kind of power is possible with this experiment!

• Cover one side of the cardboard with aluminum foil.
• Place the plastic bottle in the center of the cardboard, then form a volcano with the red modeling clay around the bottle.
• In a bowl, combine 2 tablespoons of baking soda, 1 cup of water, 5 drops of dishwashing liquid, and 3 drops of red food coloring.
• Use a funnel to pour the mixture into the bottle.
• Have kids develop a hypothesis about what will happen in this experiment.
• Then pour 1 cup of white vinegar into the bottle, and stand back!

Talk About It

Have kids describe what they know about volcanoes. Read Romans 1:20, then ask:

• How are those powerful forces like or unlike God?
• How do you think nature’s power compares with God’s power?
• In what ways do you experience God’s power in your life?
• What surprised you about this experiment?
• When has God’s power surprised you?

Sue Kahawaii served as children’s executive pastor at the Champions Centre in Tacoma, Washington.

Looking for more science ideas? You can find lots of fun ideas in these science books!