Science
What part of the atom has no charge?
neutron
Which was invented first: the telephone or the light bulb?
telephone (1876)
Name 3 simple machines.
lever, wheel and axle, pulley, inclined plane, wedge, screw
What is the sum of the interior angles of a triangle?
180 degrees
What is the name for different versions of the same gene?
allele
What type of code represents information using only symbols 0 and 1?
binary code
What is the strongest shape?
triangle
given the equation: y = 2x+4
what is the slope of a perpendicular line?
-1/2
Which organ system controls movement and coordination?
the nervous system
True/False - the first typewriters organized letters A-Z in order
true
Why does sound travel faster in water than in air?
water molecules are closer together in air, so sound waves move through water more quickly
Which is greater: the value of pi or the value of e?
pi - 3.14
What color do plants absorb least?
green light
What type of batteries are used in cell phones?
lithium ion batteries
Why do airplanes fly at high altitudes?
What is the derivative of a constant?
0
What causes wind to form in Earth's atmosphere?
differences in air pressure created by uneven heating
firewall
Why are water towers so tall?
the height of the tower creates more water pressure, allowing water to move through pipes to different locations
Who created calculus?
Isaac Newton