Light Production and Lasers

Which of the following is an example of a non-luminous object?

• The sun

• the moon

• A glow stick

• A firefly

What is the process of producing light as a result of high temperatures called?

• Incandescence

• Electric discharge

• Phosphorescence

• Fluorescence

Which of the following is an example of chemiluminescence?

• A flash of lightning

• A glow stick

• A watch dial

• A compact fluorescent light bulb

What causes clothing to 'glow' under UV light?

• Phosphorescence

• Fluorescence

• Chemiluminescence

• LEDs

What is the acronym LASER stands for?

• Light Amplification by Stimulated Emission of Radiation

• Light Emitting Diode

• Light Energy Source

• Light Absorption and Reflection

What is the main difference between a laser and an incandescent bulb?

• A laser emits light of all the same energy level

• A laser emits light of different energy levels

• A laser emits visible light

• A laser emits heat

Why should you never look directly into a laser beam?

• Because it emits heat

• Because it emits UV light

• Because it emits visible light

• Because it is very intense and concentrated

What is one of the uses of lasers?

• Measuring distances

• Burning into steel

• Performing surgery

• All of the above

What is the immediate giving off of visible light as a result of the absorption of UV light called?

• Incandescence

• Electric discharge

• Phosphorescence

• Fluorescence

What is an example of a living organism that exhibits chemiluminescence?

• a human

• A cat

• A firefly

• a kangaroo