Passenger Aircraft
Historic Aircraft
Apple Products
Inventions in Other Words
100
Boeing 737
100
Wright Flyer
100
iPhone
100
What do we call a circular frame of hard material that may be solid or spoked and is capable of rotating on an axle?
Wheel
200
Boeing 747
200
SR-71 Blackbird
200
iPod Nano
200
What do we call a small, thin piece of metal with one pointed end and one flat end that is hit with a hammer, usually to fasten or join two objects?
Nail
300
Boeing 777
300
B-29 Superfortress
300
Macintosh
300
What do we call a a device for determining directions by means of a magnetic needle turning freely on a pivot and pointing to the magnetic north?
Compass
400
Airbus A380
400
Hindenburg
400
iMac
400
What do we call thin material produced by processing cellulose fibers in water, then draining, pressing and drying?
Paper
500
Bombardier CRJ
500
Gossamer Albatross
500
Newton
500
What do we call a transparent object with curved sides for concentrating or dispersing light rays?
Lens