Sound
This word means back and forth movements.
vibration?
What are light and sound? A form of e.....
energy
Wax paper, frosted glass and tissue paper are examples of what kind of material? Transparent, translucent or opaque
translucent
Give an example of a luminous object
candle, torch, lamp etc
The unit of sound
decibel
This is the direction that light travels
a straight line
Plastic wrap, glass, and water are examples of what kind of material? Transparent, translucent or opaque
transparent
Glow worms, fire flies are an example of this...
bioluminescence
These go in your ears and prevent sound from getting through.
earplugs
It means the bouncing of light from a surface
reflection
Plants, your desk, pencil and YOU are what type of material? Transparent, translucent or opaque
opaque
How do we protect our skin from UV rays?
Sunscreen, hats etc
This word means how high or low a sound is.
pitch
What colour is sunlight?
white
I appear when light is refracted through the waterdrops or raindrops.
a rainbow
Why can't we hear sound in a vacuum?
There are no particles and therefore no vibrations
Sound travels through the air as this
sound wave
Does sound travel faster through air or water?
water
It is the colour that absorbs all light waves and heat and should not be worn in the summer.
black
What colours are visible when a prism is used to split white light?
red
orange
yellowgreen
blue
indigo
violet