The metric system is a system of measurement that is based on the number ten
It is often used in science and in countries around the world
Why do we use the metric system?
The metric system can be used to measure mass, volume, length, and temperature
But how is it any different?
The English System (our system) uses feet, ounces, gallons and Fahrenheit
The metric system uses meters, grams, liters and CelsiusLength
RulerWhat is Length?
It is the measured distance between two points
Distance between two points
Length can also be referred to as width, height, or distance, depending on how it is used.
A ruler is used to measure distances between objects.Mass
Triple Beam Balance
Mass tells us HOW MUCH matter there is. It is measured in grams.
Example – 5 grams of salt
10 kilograms of feathers
Matter – anything that has mass and takes up space. It is found in three different states.
A Triple Beam Balance is the lab equipment used to measure mass. Measurements are expressed in GRAMSVolume
Graduated Cylinder/RulerHow does one measure volume?
Volume describes how much SPACE an object takes up.
Volume can change depending on the state of matter. Solids and liquids have a constant volume, gases change based on the size of the containerThere are two methods
Used to measure the volume of a liquid OR an irregularly shaped object (like a jagged rock)
Can be used to measuring and then multiplying the length, width, and height of an object.
Volume = L x W x HTemperature
ThermometerWhat is Temperature?
Temperature is a measure of how much energy an object contains. Measured in °Celsius or Kelvin.
More energy = higher temperatureDensity
Density – How much stuff is in a certain amount of space
Objects that are more dense sink to the bottom
Example – Dropping a rock in water
- if the rock is MORE dense than the water, it sinks
-if the rock is LESS dense than the water, it floats
Density cannot be measured by one piece of lab equipment
You need the MASS and the VOLUME
Density = Mass
D = M/V
Units – g/ml OR g/cm3
The Magic Triangle
Metric ruler or graduated cylinder
Liter, cm3 = mL
Tools for mass &
g/ml or g/cm3
ºC or K