Sound
This causes sound to be made. What is…
What are vibrations
Light travels at this incredible speed. What is…
What is 300,000 km per second?
The moon is not a source of light. It actually does this. What is…
What is reflect light from the sun?
This type of material lets all light pass through it. What is…
What is transparent (example: glass)
This term describes the distance between two peaks of a wave. What is…
What is wavelength?
This term describes how loud a sound is. What is…
What is amplitude
This kind of light is produced by nature, not by humans. What is…
What is natural light?
This is the main source of natural light for Earth. What is…
What is the sun
This type of material blocks all light. What is…
What is opaque (example: cardboard)
This term describes how high or low a sound seems to us. What is…
What is pitch
True or False: Sound travels faster in air than in water.
What is false
These colours reflect light, and these absorb it. What are…
What are: Light colours reflect light, dark colours absorb it
This bug produces its own light naturally. What is…
What is a firefly
This material lets some, but not all, light through. What is…
What is translucent (example: wax paper)
Light moves faster than this type of wave. What is…
What is sound
This kind of pollution is caused by too much noise and can harm people and animals. What is…
What is sound pollution
When might you want to reflect light?
What is: When using a mirror, safety gear, or redirecting sunlight
These light sources are made by humans. What are…
What are artificial light sources? (Examples: light bulb, candle, flashlight)
Cell phones are not transparent. What does that mean?
What is: Light does not pass through them.
When light hits an object and bounces off it, this happens. What is…
What is reflection?
This is a problem caused by excessive sound and can affect concentration, sleep, and wildlife. Explain why it’s a problem, give 2 example.
What is: Sound pollution is harmful because it can interrupt communication, stress animals, and cause hearing problems for people.
This type of pollution blocks our view of stars at night and disrupts ecosystems like sea turtles. What is…
What is light pollution
Explain the difference between natural and artificial light and give one example of each.
What is: Natural light comes from nature, like the sun. Artificial light is man-made, like a flashlight.
Why are some materials see-through while others are not?
What is: It depends on how much light the material allows to pass through it.
Explain why amplitude affects how loud a sound is.
What is: Amplitude is the size of the vibrations; larger amplitude means louder sound.