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What is Light?
Electromagnetic Waves
How is Light Produced?
Sources
Miscellaneous
100
Energy that makes life possible on Earth due to its nuclear reactions
What is sunlight
100
Type with the least energy. It's use: radar, atronomy, tv signals, etc.
What are radio waves
100
Two types of light. One produces its own light and the other doesn't
What is luminous and non-luminous
100
Incandescence is the production of light as a result of what
What is high temperature
100
Lights that can lead to significant energy savings in homes and businesses.
What are fluorescent lights.
200
The classification of electromagnetic waves by energy
What is electromagnetic spectrum
200
Type of electromagnetic wave that is used for medical imaging, cancer treatment, security equipment, etc.
What are x-rays
200
Three objects that are non-luminous
What is a pencil, bicycle , tree, etc.
200
Light tube that is filled with very low pressure mercury-vapour
What is fluorescent
200
LED lights use more or less electricity than other kinds of lights
What is less
300
How is it possible that you can see Earth's shadow on the moon during a lunar eclipse
What is light travels in straight lines.
300
Type of electromagnetic wave that causes skin to tan and sunburn, stimulates production of vitamin D, killing bacteria in food and water, etc.
What are ultraviolet lights
300
Is it possible for the human eye to see all forms of light.
What is no
300
As the result of two chemicals mixing glow sticks produce light by what type of light source
What is chemiluminescence
300
Reason why living organisms use bioluminescence (glow)
What is to protect themselves, to lure prey, or attract mates.
400
An object travelling at the speed of light could circle Earth's equator how many times in just one second
What is 7.5 times
400
Any electromagnetic wave that the human eye can detect
What is visible light
400
Four main things produce light
What is the sun, flames, chemicals, and heat.
400
Materials that are often described as glow-in-the-dark
What is phosphorescent materials.
400
The first scientist to state that seven distinct colours were visible in white light
Who is Newton
500
Heat energy can be transferred by what two things
What is conduction and convection
500
What two scientists proved the existence of electromagnetic waves
What is Heinrich Hertz and William Konrad Roentgen
500
He is credited with producing the first commercial useful incandescent bulb
Who is Thomas Edison.
500
Production of light when certain crystals are scratched, crushed, or rubbed
What is triboluminescence
500
Lightning is a dramatic example of what light source through a gas.
What is an electric discharge