Radiant energy
Energy tnat travels through air and space
Radiation
Energy that travels through air and space as waves
Ray
A wave; the form that solar energy travels to the earth in
Reflect
To bounce off an object or surface
Re-radiation
When the warmed earth radiates energy back into the air
Solar collector
any object or material placed in the Sun to absorb solar energy for transfer to water or air
Solar energy
Heat and light from sunshine
solar energy exposure
The amount of energy from the sun that falls on an object;dependent upon the intensity of the sunlight,and the length of time the sunlight falls on the object
Solar water heater
A system designed to use solar energy to heat water
Uneven heating
the result of different amounts of energy being transferred to adjacent surfaces
Variable
Anything than can change in an experiment that might affect the outcome
More dense
when an object has more mass for its size than another object. When an object sinks in water, it is more dense than water.