Question: Q: What do fission reactors use to slow down the neutrons? Choices: - inertia - brake - control - moderator A:
Answer: moderator

Question: Q: Difference in electric potential energy are measured in what basic unit? Choices: - moles - watts - knots - volts A:
Answer: volts

Question: Q: Steam consists of what common and essential element in its gaseous phase? Choices: - carbon dioxide - air - plasma - water A:
Answer:
water