Electricity produces work when the electrons in a conductor
a. become positive.
b. stop all movement.
c. stay negative.
d. are placed in motion.

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation

What causes the formation of ocean currents?