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100
telephone
Who is Alexander Graham Bell
100
the smallest prime number
What is 2
100
the planet in our solar system closet to the sun
What is mercury
100
narrow channel connecting 2 bodies of water
What is a straight
100
In science, which element’s symbol is “O”?
What is oxygen
200
telegraph
Who is Samuel Morse
200
the quotient of 144 and 12
What is 12
200
Which force acts upon an object to slow it down, or stop its motion?
What is friction
200
broad area of fairly level land generally close to sea level
What is a plain
200
the prime factorization of 48, expressed in exponents
What is 2 to the 4th power x 3
300
steam engine
Who is James Watt
300
The LCM (least common multiple) of 6, 8, 12
What is 24
300
Which coolant is used in its natural state at many energy plants?
What is water
300
narrow strip of land joining two land areas
What is an isthmus
300
assembly line production
Who is Henry Ford
400
eye glasses
Who is Benjamin Franklin
400
In a fraction, what the bottom number is called
What is denominator
400
Which animal is the fastest land mammal?
What is a cheetah
400
lowland with moist soils and tall grasses
What is a marsh
400
a man-made waterway
What is a canal
500
steam powered boat
Who is Robert Fulton
500
the sum of 249, 36, and 151
What is 436
500
Identify the type of simple machine that consists of a rope and a wheel.
What is a pulley
500
a stream that flows into a larger stream or river
What is a tributary
500
mechanical reaper/harvester
Who is Cyrus McCormick
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