Front

force or physical power; what living things need to exist and be active

Back

energy

Front

provides light; brightens; makes something clearer or easier to see or understand

Back

illuminates

Front

a form of energy that most often acts like a wave and illuminates, or brightens, objects

Back

light

Front

the invisible rays that carry energy in straight paths

Back

light waves

Front

tiny or very small bits of something

Back

particles

Front

lines of light that travel in a straight path from a bright object

Back

rays

Front

an area of darkness created when light is blocked by something

Back

shadow