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10 Science Experiments for Children’s Ministry

Here are 10 wonder-filled, hands-on science experiments for kids — 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.

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, and glitter.

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.

Scientific Facts: Water swirling in the tube is similar to the vortex of a tornado. The water spirals down, moving the glitter with it — just like a tornado moves objects in its path. The largest tornado recorded to date: May 22, 2004, in Wilber, Nebraska at 2.5 miles wide!

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 the Scripture. Have you ever 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?


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, and carbonated water.

The Experiment

Ask: 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.

Scientific Facts: Carbonated beverages are pressurized by carbon dioxide gas. Carbon dioxide bubbles attach to the wrinkled raisins and cause them to float and bounce. They’ll continue to “dance” up and down until they get soggy or the carbonated water goes flat.

Talk About It

Ask: Was your guess correct? Why did the raisins dance? Read the Scripture. Are the bubbles like or unlike how God wants us to praise him? How can we praise God with enthusiasm every day?

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.

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.

Scientific Facts: Clouds form when warm air rises and begins to cool. As air cools, it can’t hold as much water, so it forms tiny water droplets that become a cloud. Fair weather clouds (cirrus clouds) move with the jet stream, sometimes faster than 100 miles per hour!

Talk About It

Ask: Was your guess correct? What surprised you about this experiment? Read the Scripture. 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?

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, a glass jar, a funnel, and an empty glass drink bottle.

The Experiment

Say: 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.

Scientific Facts: The yeast converts the solid sugars and liquid water into carbon dioxide gas. Since the gas takes up more space than the solid and the liquid, the pressure in the bottle increases and the balloon expands.

Talk About It

Ask: Was your guess correct? 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 the Scripture. 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?

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: A cardboard oatmeal container, a nail, a hammer, scrap wood, and a flashlight.

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.

Scientific Facts: Stars are large balls of gas that produce color, heat, and light. A star changes over time, but it takes millions — even billions — of years for it to live out its life span. The eye can typically see 2,000 stars on a clear night.

Talk About It

Ask: What would night be like without stars? Read the Scripture. 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?

9 thoughts on “10 Science Experiments for Children’s Ministry

  1. Avatar

    Setting aside the fact that the bible is complete nonsense, carbon dioxide is not lighter than the other gases in the air, it is considerably heavier. It does not rise into the balloon to inflate it. The yeast converts the solid sugars and liquid water into carbon dioxide has. Since the gas takes up more space than the solid and the liquid, the pressure in the bottle increases and the balloon expands. If you’re going to hijack science to promote your fairytales, at least get the science right.

    • Avatar
      Christine Yount Jones

      Zepher, thanks for this information! We appreciate you helping us understand the science of this better. We’ll check this out and make appropriate changes.

    • Avatar

      Zepher, I’m confused as to why you’re on a Children’s Ministries site seeing as you believe the Bible is complete nonsense.

    • Avatar

      Complete nonsense? Who hurt you in the past to make you feel this way?

      Just curious, but have you read the Bible? I challenge you to read the book of Mark (easily done in one setting, especially for someone of your obvious intelligence).

      But beware … The Scripture has an efficacy all of its’ own …

  2. Avatar

    I love these experiments!! I really look forward to using them in my classroom! God bless you for providing this awesome tool to show children the amazing world God created for us 💕😁🙌

  3. Avatar

    these experiments really help my students to understand the lessons more clearly.
    thank you and may the Lord continue to bless and keep you.

    • Avatar
      Children's Ministry Magazine

      We’re so glad these experiments have been a blessing for you church! Thank you for all that you do.

  4. Avatar
    Nancy England

    My Sunday school boys love science experiments. This has their attention immediately and makes the lesson easy to teach.

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