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