Which term is defined as the change in the direction of light when it goes from one medium into a different medium? question options: reflection refraction diffraction absorption

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size