Light 1
Light 2
Sound 1
Sound 2
100
This is the primary source of light on Earth.
What is the sun?
100
White light can be separated into the colours of the rainbow by passing through this object.
What is a prism?
100
In 1877 Thomas Edison invented this.
What is the phonograph?
100
A phonograph recorded sound on tinfoil-coated these.
What are cylinders?
200
Rene Descartes explained the formation of rainbows as well as this.
What are clouds?
200
This is how people used to think humans received light rays from objects.
What is light traveling from a person's eyes to an object and reflected back to the eye?
200
This is how many needles a phonograph had.
What is 2?
200
This was the first ever recorded message on to a phonograph.
What is "Mary had a little lamb"?
300
From 300-291 B.C., scientists conducted investigations of this.
What is the refraction of light?
300
Leonard Diggs invented this useful tool in 1551.
What is a telescope?
300
In the 1920's and 1930's cylinders gave way to this.
What is electronics?
300
These are what digital music files are stored on.
What are computers (MP3 players)?
400
This is how much Galileo increased the magnification of the astronomy telescope.
What is 30 times ?
400
This useful tool was invented by both Zacherias Janssen and Hans Lippershey between the years 1590 & 1609.
What is the compound microscope?
400
These were the first devices that transmitted sound (rather than reproduced it).
What are speaking tubes?
400
Speaking tubes and tin-can telephones were limited in terms of these 2 factors.
What are quality of sound and the distance it could travel?
500
Galileo discovered the phases of Venus, the stars of the Milky Way, Saturn's rings, and these.
What are Jupiter's moons?
500
Sir Isaac Newton's work helped develop the theory of Quantum Mechanics which explains this.
What is that light behaves both as particles and waves?
500
This is the year that Alexander Graham Bell invented the telephone.
What is 1876?
500
This when the first cellular phone call was made.
What is 1973?
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