Light Energy Quiz

What is the speed of light?

• 1 million m/s

• 3 x 10⁸ m/s

• 5 x 10¹⁴ Hz

• 6.0 x 10^-7 m

A single line of light is called ____.

• Ray

• Ultraviolet

• X-rays

• Microwaves

What happens when light energy is absorbed?

• It is reflected

• It is transmitted

• It is transformed into heat energy

• It is dispersed into a spectrum of colors

What is the definition of a luminous object?

• An object that emits its own light

• An object that reflects light

• An object that absorbs light

• An object that scatters light

What happens when light energy is refracted?

• It changes speed and direction

• It splits into a spectrum of colors

• It travels in straight lines

• It bends around corners

What is the phenomenon of light changing speed and direction when passing from one medium to another called?

• Reflection

• Refraction

• Diffraction

• Dispersion

Which of the following is an example of a transparent material?

• Wood

• Plastic

• Metal

• Brick

Objects that do not emit light on their own are referred to as ___

• luminous

• non- luminous

• Green

• beam

Light energy can be dispersed while ____ light splits into spectrum of color.

• green

• red

• blue

• white

What is the unit of measurement for the intensity of light?

• Lux

• Candela

• Lumen

• Watt