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 system on the number 10.  A measurement system allows scientists to repeat experiments. A version of the metric system International System of Units that scientists use SI  This allows scientists to compare data and communicate.

SI Prefixes SI 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 Length to 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 gravityWeight acting on an object  Unlike weight, your mass on the moon is the same as your mass on Earth

Compare and Contrast Determine the similarities and differences of mass and weight.

The measure of how much Density mass is contained in a given volume. It is made up of two measurements.  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 objectTemperature  The unit for temperature is kelvin  The kelvin scale has no negative numbers Temperature Scales Zero 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 objectVolume or 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.