(Question)
Q: The number of neutrons and electrons may vary or change in an atom. what happens to the number of protons? Read this paragraph and choose the correct option from the provided answers: The number of protons per atom is always the same for a given element. However, the number of neutrons may vary, and the number of electrons can change. 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? Read this paragraph and choose the correct option from the provided answers: The kinetic energy of a moving object depends on its mass and its volume. Choices: - shape - iron content - liquid content - volume A:
(Answer)
volume

(Question)
Q: What do solar cells convert the energy in sunlight into? Read this paragraph and choose the correct option from the provided answers: Solar cells convert the energy in sunlight to electrical energy. They contain a material such as silicon that absorbs light energy and gives off electrons. The electrons flow and create electric current. Figure below and the animation at the URL below show how a solar cell uses light energy to produce electric current and power a light bulb. Many calculators and other devices are also powered by solar cells. Choices: - free energy - experimental energy - subsequent energy - electrical energy A:
(Answer)
electrical energy