Ques: Answer the following question given this paragraph: Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Fluid friction occurs in liquids and gases. All four types of friction are described below. You can see a video demonstration of the different types at this URL:. Q: What 3 types of friction occur between solid surfaces? Choices: - static , arching , rolling - static,desending,sliding - static , ascending , rolling - static, sliding, rolling A:
Ans: static, sliding, rolling

Ques: Answer the following question given this paragraph: Q: What type of digestion is chewing an example of? Choices: - electromagnetic - gravity - fluid - mechanical A:
Ans: mechanical

Ques: Answer the following question given this paragraph: Loudness refers to how loud or soft a sound seems to a listener. The loudness of sound is determined, in turn, by the intensity, or amount of energy, in sound waves. The unit of intensity is the decibel (dB). Q: What is the term used to measure the intensity of sound waves? Choices: - amplitude - phon - hertz - decibel A:
Ans: decibel

Ques: Answer the following question given this paragraph: User:helix84/Wikimedia Commons. Gas exchange is the movement of oxygen into the blood and carbon dioxide out of the blood . CC BY 2.5. Q: What gases move in and out of blood during gas exchange? Choices: - oxygen, carbon monoxide - nitrogen, carbon dioxide - oxygen, nitrogen - oxygen, carbon dioxide A:
Ans:
oxygen, carbon dioxide