11th grade The four fundamental forces worksheet

The four fundamental forces

Grade 11 Science Worksheet

Circle the best answer, or write your answer on the line.

1. 1.

   Two protons are 2 × 10⁻¹⁵ m apart. With k = 8.9875 × 10⁹ N·m²/C² and e = 1.602176634 × 10⁻¹⁹ C, what electric force pushes them apart, to 0.01 N, Ari?
2. 2.

   Two protons are 3 × 10⁻¹⁵ m apart. With k = 8.9875 × 10⁹ N·m²/C² and e = 1.602176634 × 10⁻¹⁹ C, what electric force pushes them apart, to 0.01 N, Bo?
3. 3.

   Two protons are 4 × 10⁻¹⁵ m apart. With k = 8.9875 × 10⁹ N·m²/C² and e = 1.602176634 × 10⁻¹⁹ C, what electric force pushes them apart, to 0.01 N, Esme?
5. 4.

   Using the table, about how many times stronger is the electromagnetic force than gravity, Jun?

   • About 39 times
   • About 7 × 10³⁶ times
   • About 137 times as strong
6. 5.

   Using the table, about how many times stronger is the strong force than the weak force, Kira?

   Use the picture in question 4.

   • About 137 times as strong
   • About 6 times
   • About a million times
7. 6.

   Protons in a nucleus push each other apart. What holds the nucleus together, Milo?

   • The weak force pulling them in
   • Gravity between the many protons
   • The strong force, at short range
8. 7.

   Why doesn't the strong force pull a cup toward a table, Noah?

   • Cups and tables don't contain protons
   • Its range is about a nucleus wide
   • It is weaker than gravity
9. 8.

   Why are very large nuclei less stable than middle-sized ones, Pia?

   • The electric push reaches farther
   • Big nuclei have no neutrons
   • Their electrons pull them apart
10. 9.

    Which particle carries the electromagnetic force, Ren?

    • The neutron
    • The gluon
    • The photon
11. 10.

    Which particle carries the strong force between quarks, Zee?

    • The photon
    • The electron
    • The gluon