Physics
when does light travel fastest?
in a vacuum
what is a vacuum?
no air or oxygen (space, is a vacuum)
what does light transfer (in a wave)?
transfers energy
what objects are luminous?
sun, light bulbs, glow worms and canddles.
water waves and light waves have the same...
shape (wave)
light waves don't need............to travel.
particles
The substance that travels through light waves is called a
medium
water waves travel by
moving particles
light waves are slowed by
particles
any objects that produces light is called
light source.