Presidents
Photography
Aviation
Mathematics
Science
100
The first president of the United States
Who is George Washington
100
This is used to take a picture when the subject is poorly lit.
What is a flash
100
This creates thrust to make the plane move forward.
What is an engine
100
two groups of three
What is six
100
This causes an item to fall toward the center of the earth.
What is gravity
200
The president during the civil war.
Who is Abe Lincoln
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