1. Which of the following is a scientific law?
a. Evolution of man
b. Energy is neither created nor destroyed
c. Duality of matter
d. Existence of worm holes in the universe
2. Which of the following is a theory?
a. The speed of light is constant
b. Water has oxygen and hydrogen
c. The earth is round
d. Electron sometimes behaves like a wave
3. Which of the following cannot be answered by science?
a. The age of the solar system
b. The speed of light
c. The mass of the electron
d. The existence of the devil
4. Weak force is illustrated by
a. A man climbing a tree
b. Radioactivity
d. Van Allen’s belt
e. Quarks in the proton
5. Two particles with the same mass and charge but opposite in sign and are separated with a distance r has
a. Gravitational force greater than electric force
b. Will repel each other
c. The gravitational force is proportional to 1/r
d. The electric force is proportional to 1/r^2
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