Light Travels in a what?
Straight line.
what are the two types of light sources?
Natural & Human made light
how do we see things?
light bounces off objects and enters our eyes
Sound can travel through? ______, ______ &_____
liquid, solids and air
When an object vibrates quickly makes a sound with a high pitch and if an object vibrates slowly it has a _____ pitch.
Low
Name this thermal transfer.
convection
Name this heat transfer
Conduction
Name this heat transfer
radiation
Heat is a form of energy. It flows from a _____ object to a cool object.
hot
what type of light source is this?
Natural light
what type of light source is this?
human made
