Question | Answer |
hypothesis | suggested explanation for an observation |
independent variable | the factor that is manipulated by the experimenter |
dependent variable | factor that can change if the independent variable is changed |
control | standard for comparison in an experiment |
theory | an explanation based on many observations during repeated experiments that is valid only if consistant w/ observations, makes testable predictions, & is simples explanation |
S.I. | Systeme International d'Unites (standard system of units) |
Scientific notation | a type of shorthand used by scientists in which a number is expressed as a multiplier and a power of ten |
Volume | the size of a body or region in 3D space |
Density | Measure of the amount of mass contained within a set volume. (D=m/v) |
Natural Law | an explanation of how nature "works" = scientific fact |
Length | The standard SI unit is meters |
Meter | SI unit of length |
Area | measurements having units such as square meters |
mass | the amount of matter in an object |
weight | a measure of gravitational force acting on an object |
centi- | 1/100 of b.u. [.01 x b.u.] |
deci- | 1/10 of b.u. [.1 x bu] |
milli- | 1/1000 of bu [.001 x bu] |
kilo- | 1000 x bu |
hecto- | 100 x bu |
deca- | 10 x bu |
Tera- | 1,000,000,000,000 x bu [1x10*12] |
Giga- | 1,000,000,000 x bu [1x10*9] |
Mega- | 1,000,000 x bu [1x10*6] |
Micro- | .000,000,1 x bu [1x10 *-6} |
nano- | .000,000,000,1 x bu [1x10*-9] |
pico- | .000,000,000,000,1 x bu [1x10*-12] |
Liter | Unit of Volume |
Gram | Unit of mass |
Celsius/Kelvin | Units of temperature |
Temperature | Measured in Celsius & Kelvin (+ fahrenheit) |