Waves Unit Post Test

What was your favorite activity in this unit?

What was the most important thing you learned?

True or False: Waves carry energy.

• True

• False

What type of communication device was the Morse Code invented for?

• The telephone

• The cell phone

• The telegraph

• The Internet

How does a periscope let you see behind obstacles?

• It reflects light off of multiple mirrors.

• It bends light.

• It captures an image of the object and then displays it on a screen.

• It doesn't actually let you see behind obstacles.

Why do our eyes see the color red when we look at a tomato?

• Tomatoes emit red light.

• Tomatoes absorb red light and reflect green and blue light.

• Tomatoes reflect red light and absorb green and blue light.

• Tomatoes reflect all colors of light, but our eyes only absorb red light.

Which of the following states of matter do waves travel through?

• Solid

• Liquid

• Gas

• All of the above

What is a luminous object?

• An object that reflects light.

• An object that directly emits light.

• An object that blocks light.

• An object that absorbs light.

How do you find the wavelength of a transverse wave?

• Find the distance between one crest and the next trough of the wave.

• Find the distance between one trough and the next crest of the wave.

• Find the distance between one trough and the next trough of the wave.

• Find the amplitude.

What color of light do you get by combining red, blue, and green light?

• White light

• Black light

• Brown light

• Yellow light