Quiz 10.2 Producing Visible Light

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What is a source of natural light?
1. Bioluminescence
2. Incandescence
3. Fluorescence
4. Phosphorescence
Some Halloween make-ups contain chemicals that glow in the dark after they are exposed to light. These make-ups are an example of
1. phosphorescence.
2. bioluminescence.
3. chemiluminescence.
4. fluorescence.
Which type of artificial light produces the most heat?
1. Incandescence
2. Chemiluminescence
3. Phosphorescence
4. Electrical discharge
A crime scene investigator uses a chemical called luminol to detect traces of blood. The chemical glows when it reacts with the iron found in blood. This is an example of which kind of artificial light source?
1. Chemiluminescence
2. Bioluminescence
3. Triboluminescence
4. Phospohorescence
Which type of light requires an electrical discharge?
1. Neon sign
2. LED display
3. Plasma screen
4. Liquid crystal display
Which type of display works by selectively blocking light?
1. Liquid crystal display
2. Plasma display
3. LED display
4. Fluorescent television screen
How does an incandescent light bulb work?
1. A thin metal filament glows when it is heated
2. A substance glows after being exposed to energized particles
3. A crystal glows when it is crushed
4. A gas glows when electricity passes through it
What technology is described by the following statement?

"Microscopic electroluminescent light sources made up of different materials are combined to create a handheld colour screen that requires very little electricity."
1. LED
2. Plasma
3. LCD
4. Carbon arc
What technology relies on the use of different phosphors to create different colours?
1. Plasma display
2. Neon art display
3. Liquid crystal display
4. LED display
Which type of light is created when an electric current passes through a gas?
1. Carbon arc
2. LED
3. Fluorescent
4. Incandescent