What has to flow through the filament to make it hot enough to glow and give off light?

What are the wires that hold the filament in place?

The electricity must flow through the lightbulb in a ______________.

Electric current has ______________ and this produces heat and light.

Edison gave up on the lightbulb when it didn't work.

True or False

A carbon coated thread made a good filament for a lightbulb.

True or False?

Edison also discovered that things need ______________ to burn.

4. Bulb glows only in

Today we have _____________ lamps that use gas instead of a filament to give off light.

What other word means component?

_______ are produce light by using a small amount of energy to emit a ray of light and it doesn't produce heat.

Another name for a battery.

Solar energy is energy from the _____