Have a question about quarks? Click here to ask Mr. Marks

Quarks are the stuff that everything is made of. They are the smallest things that scientists have discovered.

Inside the proton subatomic universe vehicle are our quark friends: Ushi - an up quark, Harold - an up quark, and Danny - a down quark.

Choose a question 1. How small are quarks? 2. How do scientistis know there are quarks? 3. Are there different kinds of quarks? 4. Are there other small particles? 5. What are forces? 6. What is electricity? 7. How do quarks get together to make other things? 8. How do atoms get together? 9. What is a proton? 10. What are atoms? 11. What is antimatter?