Question 1

What is a bubble?

Accepted Answer

A bubble is a thin skin of liquid filled with air. It's round because that's the shape that takes the least energy to form.

Question 2

Why do bubbles pop?

Accepted Answer

Bubbles pop when their skin gets too thin or is poked. Touching a bubble or letting it dry out can make it disappear!

Question 3

Why are bubbles round?

Accepted Answer

Bubbles are round because that's the best shape for holding air inside. A round shape uses the least amount of skin and is very strong for a bubble.

Question 4

What is a foam?

Accepted Answer

Foam is a bunch of bubbles packed closely together. It can look like a cloud made out of bubbles!

Question 5

How do we make bubbles?

Accepted Answer

We make bubbles by blowing air into bubble liquid with a wand or by shaking the liquid. The liquid usually has soap and water mixed together.

Question 6

Why do we use soap to make bubbles?

Accepted Answer

Soap helps the water in bubbles stick together longer. This makes stronger bubbles that last longer.

Question 7

Why do bubbles have colors?

Accepted Answer

Bubbles look colorful when light hits them. The colors come from light bouncing around in the bubble’s skin.

Question 8

Can you make square bubbles?

Accepted Answer

Bubbles are always round, but you can make bubbles look like squares if they touch something with flat sides, like a wire shape.

Question 9

Why do bubbles float in the air?

Accepted Answer

Bubbles float because the air inside them is lighter than the air outside. It’s like how a helium balloon floats up!

Question 10

Why do some bubbles last longer than others?

Accepted Answer

Bubbles last longer if their skin is thicker and they don’t dry out fast. Adding more soap can help them stick around longer too.

Question 11

Can bubbles be different sizes?

Accepted Answer

Yes, bubbles can be small or big! It depends on how much air is blown into them.

Question 12

Why do bubbles join together?

Accepted Answer

Bubbles like to stick together because it makes them stronger and uses less energy. When they combine, they make bigger bubbles or foam.

Question 13

What happens inside a bubble?

Accepted Answer

Inside a bubble, there’s just air! The bubble acts like a little cage holding the air in.

Question 14

Can you make bubbles without soap?

Accepted Answer

It’s hard to make good bubbles without soap because the water alone isn’t strong enough to hold the air. Soap helps hold everything together!

Question 15

What's the biggest bubble ever made?

Accepted Answer

The biggest bubbles are huge, sometimes as big as a room! People use special tools and lots of soap to make them.

Question 16

Why do bubbles sometimes stick together?

Accepted Answer

When bubbles touch, they can share the soapy skin between them. This makes them stick to each other.

Question 17

What's inside foam?

Accepted Answer

Foam is made of a lot of tiny bubbles all together. Inside each bubble is air, just like one big bubble.

Question 18

Do bubbles only live in the air?

Accepted Answer

Bubbles can also float on water. They can pop up anywhere if there’s air and a bubbly mixture.

Question 19

What materials are needed to make bubbles?

Accepted Answer

You need water and soap to make the best bubbles, and a wand or something to blow them with. Glycerin can also help bubbles last longer.

Question 20

Can you see bubbles under the ocean?

Accepted Answer

Yes! Bubbles are often seen under the ocean when animals swim or when waves crash, bringing air into the water.

The Science of Bubbles and Foams - 20 FAQs Explained Simply