(Question)
Q: The number of neutrons and electrons may vary or change in an atom. what happens to the number of protons? Choices: - decreases - increases - depends - remains the same A:
(Answer)
remains the same

(Question)
Q: The kinetic energy of a moving object depends on it's mass and it's what? Choices: - shape - iron content - liquid content - volume A:
(Answer)
volume

(Question)
Q: What do solar cells convert the energy in sunlight into? Choices: - free energy - experimental energy - subsequent energy - electrical energy A:
(Answer)
electrical energy