physics
chemistry
biology
math
100
This force pulls objects toward the center of the Earth
Gravity
100
The chemical symbol for table salt
NaCl
100
The powerhouse of the cell
Mitochondria
100
34 + 33
67
200
's' in the equation: s = d/t
Speed
200
The opposite of an acid
Base
200
Humans have how many pairs of chromosomes?
23
200
The longest side of a right triangle
Hypotenuse
300
The effect where the pitch of an ambulance siren changes as it passes
Doppler Effect
300
A reaction that produces carbon dioxide and water and is used for heat and energy
Combustion
300
The region on an enzyme that binds to a protein or other substance during a reaction
Active site
300
The middle value when numbers are arranged in order
Median
400
The law that states energy cannot be created or destroyed
Conservation of Energy
400
The amount of carbons in methane
One
400
The organ responsible for filtering blood and producing urine
Kidneys
400
The symbol ∑ (sigma) denotes what mathematical operation?
Summation
500
The most common unit for measuring pressure
Pascal
500
The functional group of this organic compound
Carboxylic acid
500
The enzyme in saliva that helps break down starches
Amylase
500
The value that euler’s number 'e' is approximately equal to
2.72