Which of the following can occur by conduction?
a. transfer of heat from the sun
b. transfer of heat through air
c. transfer of heat through space
d. transfer of heat through a liquid

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Why don't you see your reflection in water with waves or repples