Unit 1: Science & Technology

Lesson 1: Measurement- A Common Language

Essential Questions:Why do scientists use a standard

measurement system?What are some SI units of

measure?

Why do scientists use a standard measurement system?

A measurement system based Metric systemon the number 10.

A measurement system allows scientists to repeat experiments.

A version of the metric system International System of Units

that scientists useSI

This allows scientists to compare data and communicate.

SI PrefixesSI units are similar to our money units, in which a dime is ten times more than a penny. Determine the example for the SI Prefixes.

What are some SI units of measure?

The distance from one point Lengthto another. The basic unit for length is the meter. A tool used to measure is a metric ruler. Meter (softball throw) centimeter/millimeter (paper) kilometer (distance

between cities)

A measure of the amount of Mass matter in an object

The basic unit for mass is the kilogram A tool used to measure is a balance Kilogram (car) grams/milligrams (turtle)

A measure of the force of gravityWeightacting on an object Unlike weight, your mass on the moon is the same as your mass on Earth

Compare and ContrastDetermine the similarities and differences of mass and weight.

The measure of how much Densitymass is contained in a given volume. It is made up of twomeasurements.

The basic unit for density is kilograms per cubic meter

A bowling ball and a beach ball have the same volume but different masses. Which object has a greater density?

An object will float if it is less dense than the surrounding liquid

The degree of heat in an object Temperature

The unit for temperature is kelvin The kelvin scale has no negative numbers

Temperature ScalesZero on the Kelvin scale (0 K) is the coldest possible temperature. It is called absolute zero. What is the boiling point and what is the freezing point on the Celsius thermometer?

Time

The basic unit for time is the second The second is divided into smaller units based on 10

The amount of space an objectVolumeor substance takes up

The basic unit for volume is the cubic meter Cubic meters/centimeters (solids) Liter (liquids)

V = length x width x height

Displacement method

Volume of Rectangular Solids

Volume of Irregular Solids

1. Fill a graduated cylinder. Record the volume in mL.2. Place the object in. Record the new volume.3. Subtract the volume of the water by the volume of the water with the object.