Question

#1 The water held back by a dam is an example of which type of energy?

(A) chemical energy

(B) mechanical energy

(C) kinetic energy

(D) potential energy

#2 A swinging pendulum demonstrates which type of energy?

(A) both potential and kinetic energy

(B) chemical energy

(C) only kinetic energy

(D) only potential energy

#3 How can you increase the period of a pendulum?

(A) by making the string longer

(B) by making the string shorter

(C) by taking away mass

(D) by adding mass

Answer 1

1. Potential Energy

2. Both Potential and Kinetic Energy

3. by making the string longer