CHAPTER 1 Flashcards
Measurements & Units
Units
A standard, defined amount that is used to express other measurements
What does each type of unit in the metric system have
a base unit
What does adding a prefix to a unit do
it gives a derived unit
What does distance express
How far apart two things are
What is volume?
The amoount of space an object occupies
What is mass
a measure of how strongly an object resists being moved when it is pushed
What is weight
a measure of how strongly an object is attracted by gravity
Precision
How close multiple measurements are to one another
Accuracy
The closeness of a measurement to the true value
Conversion factors show relationships between what
Two different units
Compound unit
made up of two or more units
EX: 60 miles/hour
International System/System International (SI)
primarily based on the metric system
-universal language of measurement that is based on the metric system
What are the 5 SI Base Units
- Mass = kilogram (kg)
- Length = meter (m)
- Time = second (s)
- Temperature = Kelvin (K)
- Amount of substance = mole (mol)
Derived Units
-Area = m^2
-Volume = m^3
How many feet in 1 mile
5,280 feet
Celcius Boiling Point
100 degrees celsius
Celsius freezing point
0 degrees Celsius
Kelvin freezing point
273.15 Kelvin
Fahrenheit freezing point
32 degrees Fahrenheit
Fahrenheit boiling point
212 degrees Fahrenheit
Density =
mass/volume
Two variables of temperature
-magnitude
-Where you set the zero (zero)
1 Kelvin = ___ degrees Celsius
1
Zero for Kelvin
-273 degrees Celsius
