Light Sources Flashcards
LO: To understand what a light source is.
What is a natural light source?
The Sun
What type of light source is a light bulb?
Artificial light source
True or False: Fireflies are considered light sources.
True
Name one example of a light source that uses gas discharge.
Neon lights
What type of light does a laser produce?
Coherent light
Which light source is commonly used in street lighting?
Sodium vapor lamp
True or False: Fluorescent lamps are more energy-efficient than incandescent lamps.
True
What is the primary light source for photosynthesis in plants?
Sunlight
Name a light source that is often used in photography.
Flash
What type of light source emits light through chemical reactions?
Chemiluminescent sources
Fill in the blank: A _______ is a device that converts electrical energy into light energy.
light-emitting diode (LED)
What type of light source is used in fiber optic communication?
Laser light
True or False: The Moon is a light source.
False
What light source is produced by burning wood or coal?
Fire
Name a type of light source used in stage lighting.
Spotlight
What is the term for light produced by living organisms?
Bioluminescence
Fill in the blank: _______ light sources are often used in backlighting for displays.
LED
What is one advantage of using LED lights over traditional bulbs?
They are more energy-efficient.
Name a light source that is a common household item.
Table lamp
True or False: Halogen bulbs are a type of incandescent bulb.
True
What type of light source is used in a typical car headlight?
Halogen bulb
What is the primary use of ultraviolet light sources?
Sterilization and disinfection
Fill in the blank: _______ lights are often used in aquariums to simulate sunlight.
Full-spectrum
What type of light source is commonly used in outdoor advertising signs?
Neon lights
True or False: Incandescent bulbs are less efficient than fluorescent bulbs.
True
