Use the "Law of Reflection" to describe why you cannot see your reflection in a piece
of paper.

What can change the speed of sound as it travels through the ocean? a. salinity only b. density and salinity c. salinity and distance from land d. density and distance from land

Which of the following is used to answer scientific question? a. intuitionb. opinion pollsc. experimentd. imagination

Which of the following is an example of a compound machine. a. a bicycle chain. b. a coffee mug. c. a paper cutter