(Question)
Q: What concentrates wave energy or disperses it? Choices: - wave diffusion - a prism - wave reflection - wave refraction A:
(Answer)
wave refraction

(Question)
Q: The planet neptune has strange dark spots that sometimes appear on its surface? what are these spots? Choices: - seas - earthquakes - black holes - storms A:
(Answer)
storms

(Question)
Q: What does an electric field surround? Choices: - neutral particles - negative particle - charged ions - a charged particle A:
(Answer)
a charged particle