WONDER #2125: What Is String Theory?

Question 1 of 3

According to the Standard Model of particle physics, how many basic building blocks are there that make up the world?

1. 4
2. 9
3. 12
4. 26

Question 2 of 3

Which of the following is NOT one of the four fundamental forces in the universe?

1. strong nuclear force
2. electromagnetism
3. gravity
4. love

Question 3 of 3

String theory is perhaps the most promising candidate for a microscopic, quantum theory of what?

1. gravity
2. electromagnetism
3. nuclear force
4. mechanical energy

Check your answers online at https://www.wonderopolis.org/wonder/what-is-string-theory.