Chapter 3 5th Grade

Front

opaque

Back

does not let light pass through

Front

translucent

Back

allows light to pass through by scattering it

Front

transparent

Back

allows light to pass through and is clear

Front

speed of light

Back

186,000 miles per second

Front

shadow

Back

a spot of darkness cast by an opaque object

Front

luminous

Back

an object that produces their own light

Front

natural light

Back

luminous lights made by God

Front

artificial light

Back

luminous lights made by man

Front

Thomas Edison

Back

invented the electric light bulb

Front

incandescent bulb

Back

a thin wire made of metal tungsten contained within a sealed glass bulb