Measurement and Math

SIUnits

Tools and Methods

Accuracy and Precision

International System of Units(SI Units)

• Scientists in almost all countries use a common International System of Units so that it is easier for them to share data and results.

• The SI units are the metric units and they are based on a system of the number 10.

Distance

• The metric base unit for length is meter.– Any unit ending in ‘meter is a measurement of

length (ie: centimeter, kilometer)

Volume

• Volume is the amount of space that something occupies.

• There are different ways to measure – depends on if it is a solid or a liquid.

– Solid is measure in cubic meters (m3)– Liquids are measured in liters liters (L)

Liquid Volume

• pour it into a flask, beaker or graduated cylinder and read the level of the top of the liquid.

• MENISCUS- lowest point of the surface of a liquid- where volume is measured

• These units are liters (L)

Solid Volume – part 1

• For evenly shaped objects- measure the sides with a ruler and multiply them

• SI unit- m3

• Volume = length x width x height

Mass

• Amount of matter that something is made up of…..

• The metric base unit for mass is grams• Very small objects would be measured in

milligrams and very large objects would be measured in kilograms.

Time

• Clock• Stopwatch

Temperature

• Temperature is a measure of how hot or cold something is.

• The metric unit for temperature is CelsiusWater boils at 100°CWater freezes at 0°C

Metric Review

Length Volume Mass Temp.

Your height incentimeters

Volume of a cube in cubic centimeters

Mass of a cube in grams

Temperature of room temperature water.

Distance between 2 classrooms in meters

Volume of water in a cylinder

Mass of the water from the cylinder. ONLY the water.

Temperature of ice water.

Length of your pencil in millimeters

Volume of rock in as measured by displacement.

Mass of a rock in grams

Temperature of warmed water.

DO NOW- AUGUST 23Match the measurement with the correct metric unit & tool (to make a match, choose one from the second AND third column that match up with the word in the

first column)

MEASUREMENT• Length• Volume• Mass• Temperature

UNIT• Meters• Milliliters• Celsius• Grams

TOOL• Triple Beam

Balance• Thermometer• Graduated

cylinder• Ruler

Metric Conversions

SIBase Units

Mnemonic Devices

Metric Conversions

KING HENRY DIED UNEXPECTANTLY

DRINKING CHOCOLATE MILK!