Q: Another measure of the effectiveness of a machine is its what? Choices: - aesthetic effect - cost benefit - chemical advantage - mechanical advantage A:
mechanical advantage

(Question)
Q: What three characteristics do waves have? Choices: - structure , refraction and deflection - theory , refraction and deflection - spin, refraction, and deflection - reflection, refraction and deflection A:
(Answer)
reflection, refraction and deflection

Ques: Q: What makes up 99 percent of air? Choices: - oxygen and dioxide - phosphorus and oxygen - dioxide and nitrogen - nitrogen and oxygen A:
Ans: nitrogen and oxygen

(Q).
Q: Define motion. Choices: - gravitational pull - distance traveled - speed of objects - change of position A:
(A).
change of position

Ques:Q: Further transformation occurs during organogenesis, the formation of what? Choices: - arteries - muscles - bones - organs A:

Ans:organs

Ques: Q: A major disturbance in what results in an episode of severe weather called a storm? Choices: - the oceans - the core - the ozone layer - the atmosphere A:
Ans:
the atmosphere