What is an object heated to such a high temperature that it emits visible light.
100
When I crack a glow stick, the reason that it starts to produce light is because chemicals inside it reaction.
What is chemiluminescent source.
100
A candle light can be an artificial light source, what other light source could this be.
What is incandescent source.
100
If you are looking out your window and the sunlight is shining through, what would you use to describe this object.
What is transparent.
200
The sun or a fire is an example of what?
What is a natural light source.
200
About ________ % of the energy given given off by ____________________ is released as ________________.
What is about 95% of the energy given off by incandescent light bulbs is released as heat.
200
This energy transformation is ultraviolet light - energy absorbed by particles - visible light energy.
What is Florescence.
200
A jelly fish and a firefly are this light source.
What is Bioluminescence.
200
My body casts a shadow because I am ___________. Because __________ ...
What is opaque. Because my body totally blocks any light from passing through.
300
This type of energy does not require matter.
What is radiation.
300
The energy transformation for and Incandescent Source.
What is Electrical Energy - Thermal Energy - Visible Light Energy.
300
These are disadvantages of florescent lights.
What is expensive to buy, difficult to dispose of and they are also toxic.
300
A glow stick.
What is Chemiluminescent Source.
300
A Ray is.
What is a straight line that represents the path of a beam of light.
400
This indicates how much energy a surface will receive.
What is the brightness or intensity of light.
400
These two parts are essential in a light bulb.
What is filament and base.
400
When I look up at the ceiling of my bedroom, the starts that I put there are glowing because I left my bedroom light on all day.
What is phosphorescence source.
400
I left my christmas book open in the day time, I came back at night and the book was glowing, Why was this?
What is phosphorescence.
400
When I put my pencil in a cup of water it looks like it is broken! Why?
What is a translucent object because it allows light to pass through it but bends the light rays.
500
The light from the sun is formed through this process.
What is nuclear fusion.
500
Give an advantage and a disadvantage of incandescent light bulbs.
What is they are cheap to buy but very inefficient to run.
500
In finding Nemo when Marlin and Dory were looking for the mask a fish that lives on the bottom of the ocean was glowing. Why could he glow but Dory could not.
What is bioluminescence.
500
A 10 foot rope ladder hangs over the side of a boat with the bottom rung on the surface of the water. The rungs are one foot apart, and the tide goes up at the rate of 6 inches per hour. How long will it be until three rungs are covered?
Never. The boat rises as the tide goes up.
500
The closer I hold a book to my flashlight, the smaller that the shadow cast is. True or False? Why?
What is False, the shadow is bigger the closer you hold an object to the light source.