Question of the Day
• What units do you use to measure height? • What units do you use to measure weight?
Basic Measuring
Making Measurements
• When making measurements, it is necessary to include both a NUMBER and a UNIT
• For example, when measuring a piece of wood, you would say “the piece of wood is 5 feet”
• 5 is the number, feet is the unit
Measuring in Science
• Science uses the metric system of measurement. This is used all across the world.
• This is different from the system we generally use in America.
Why is it different in science?
• Science uses the metric system for multiple reasons:1. So scientists from all around the world can work
together2. So scientists can repeat their experiments3. So everyone speaks the same language
How do we measure length?
• In science, length is measured by meters – ex. millimeters, centimeters, meters
• Length is measured using a metric ruler
How do we measure mass?
• Mass is a measure of how much resistance something has
• Mass is measured using grams
• We will measure mass using a triple-beam balance
How to record data
• We will record data using tables and line graphs
• With all tables, make sure to include both a NUMBER and UNITS (ex. 0.4g or 0.4 grams)
Making a line graph
• Line graphs contain two variables: an INDEPENDENT variable and a DEPENDENT variable
• The DEPENDENT changes because of the INDEPENDENTFor example, Weight changes because of age, not the other way around
-So INDEPENDENT = age DEPENDENT = weight
TITLE
DEPENDENTVARIABLE
INDEPENDENT VARIABLE
