Q: Models may be physical, conceptual, or what else? Choices: - experimental - fundamental - theoretical - mathematical A:
mathematical

(Question)
Q: Like the strings of cello, anything that vibrates produces waves of what? Choices: - heating - light - sound - energy A:
(Answer)
energy

Ques: Q: What has high surface tension because of extensive hydrogen bonding? Choices: - hydrocarbons - air - gases - water A:
Ans: water

(Q).
Q: Enzymes speed up the rate of a specific chemical reaction and is therefore known as what? Choices: - genetic catalysts - characteristic catalysts - protein catalysts - biochemical catalysts A:
(A).
biochemical catalysts

Ques:Q: The ovaries produce estradiol and progesterone, which cause secondary sex characteristics and prepare the body for? Choices: - breathing - adulthood - movement - childbirth A:

Ans:childbirth

Ques: Q: During what time period did poor air quality become a problem? Choices: - Chernobyl disaster - coal industry boom - second world war - industrial revolution A:
Ans:
industrial revolution