Now reading: What the physics? How to eat pizza, how rainbows are made, and more

Take a self-guided tour from quantum to cosmos!

What the physics? How to eat pizza, how rainbows are made, and more

Impress your friends – or your teachers – with these fun and quick physics Q&As.

eating pizza

At the bottom of every great scientific discovery is a question. Often, the simpler the question, the more fascinating the answer.

How are stars made? Why is the sky blue? If stuff is made of molecules, and molecules are made of atoms, and atoms are made of protons and electrons, then what are protons and electrons made of?

It’s these big, juicy questions that keep scientists going. We’ve worked out the answers for some, but others are still out there. And the best thing is, an answer usually leads to a new question.

For now, feed your curiosity and impress your friends with these fascinating factoids.

Still hungry for more? Check out all our “PI Kids Are Asking” columns.

Close up shot of someone eating a slice of pizza

Want to know more about how the Remarkable Theorem relates to cheesy deliciousness? Read the full article.


Earth getting sucked back into tiny black hole

How small would you have to squish the moon to turn it into a black hole? Find out.

Kids hands pulling rubber band back between two fingers like a slingshot

Learn more about how nature’s fondness for messiness creates elasticity.


Rainbow in a blue cloudy sky

Why 42 degrees, instead of, say, 37 or 51? Find out.


Three brown eggs, one standing on tip, two down on their sides with cartoon faces

Learn another fun way to test this concept at home.


Stack of periodic table colourful childrens blocks

Learn more about the crazy collisions that bring some elements into existence!


Pink background with white text about Outreach resources






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