Grade 4 Light and Sound test

_________ is a form of energy that travels through the air. 

• sound
• volume
• energy
• wave

___________ is the number of waves that pass a point in a certain amount of time.

• Frequency

• Pitch

• Wavelength

Sound travels through the air as waves.

• True
• False

Sound is caused by? 

• force
• vibrations
• instruments

Sound is a form of? 

• energy
• pitch
• volume

What happens during refraction of light as it passes through a prism?

• Light bends and separates into individual colors.

• Different colors of light combine into white light.

• All the colors of light bend in the same way.

• All of the light bounces off the prism.

Why does a megaphone make it easier to hear sound?

• It is a cone, and just like ice cream cones, people get louder around it!

• It makes the energy get bigger.

• Like a funnel, it focuses the sound waves in a direction so that the sound waves are scattered in fewer directions.

• This is false; megaphones do not help us to hear.

We see a red t-shirt because . . .

• Red light is absorbed and the other colours are reflected.

• Red light is refracted.

• Red light is reflected and the other colours are absorbed.

• Like stop signs, red means stop, and the red light stops at our eye.

If you are in a dark room, which source of light will appear the brightest to you?

• A candle on the table in front of you
• Car lights outside
• The lights next door
• A flashlight shining down the hallway

Which way best describes how light moves?

• in circles
• slowly
• straight line
• faster through opaque objects