*Question*
Q: What term is not the same as energy, but means the energy per unit charge? Choices: - frequency - speed - mass - voltage A:
**Answer**
voltage

*Question*
Q: When blood vessels in the head dilate, what kind of severe headache can occur? Choices: - malignant - chronic headache - tension headache - migraine A:
**Answer**
migraine

*Question*
Q: What is the measure of the force of gravity pulling down on an object called? Choices: - factor - mass - volume - weight A:
**Answer**
weight

*Question*
Q: What can be formed by converging light rays behind a lens, onto a piece of film? Choices: - a prism - a kaleidoscope - a mirror - a photograph A:
**Answer**
a photograph