Question: Answer the following question given this paragraph: All sound waves begin with vibrating matter. The vibrations generate longitudinal waves that travel through matter in all directions. Q: What do all sound waves begin with? Choices: - oscillating matter - talking matter - enclosing matter - vibrating matter A:
Answer: vibrating matter

Question: Answer the following question given this paragraph: Calculations are described showing conversions between molar mass and density for gases. Q: Calculations are described showing conversions between molar mass and what for gases? Choices: - volume - length - weight - density A:
Answer: density

Question: Answer the following question given this paragraph: Respiration is the process in which gases are exchanged between the body and the outside air. Q: What is the main organ required for respiration in mammals? Choices: - the diaphragm - the heart - the brain - the lungs A:
Answer:
the lungs