What happens when a wave travels between media of different densities?
A. It changes from a transverse wave to a longitudinal wave
B. It changes from a mechanical wave to an electromagnetic wave
C. It changes color.
D. It changes speed

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.