What does the wavelength of a wave measure?
a. the height of the wave
b. the speed of the wave
c. the number of waves per second
d. the width of the wave

2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.

Which statement is best described as a atom

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.