The Basics of Measurement

Length What is length? The distance from one point to another

Units of Length The basic unit of length is the meter Two units for smaller measurements of length include the centimeter (cm) and the millimeter (mm)

Complete the Table Below Prefix Meaning Unit of Length milli one-hundredth meter one-thousand

The longer lines on the metric ruler are called… centimeters

The shorter lines on the metric ruler are called… millimeters

Mass The measure of the amount of matter an object contains Matter: The material that all objects and substances are made up of Anything that has mass and takes up space is matter

The basic unit of mass in the SI system is the… The basic unit of mass in the SI system is the kilogram.

A smaller object’s mass such as a paper clip would be measured in Smaller objects such as a paper clip would be measure in milligrams.

Volume The amount of space an object takes up

When measuring the volume of a liquid, scientists use a unit known as the… Liter (L).

To measure the volume of smaller liquids, the _________ is used. Milliliter (mL)

The instrument used to measure the volume of liquids is called the… Graduated cylinder.

This instrument has markings that are in increments of… 1 milliliter (mL)

Meniscus The curve in the top surface of water in the graduated cylinder

Figure 4: Observing - What is the proper way to read a meniscus? Read the milliliter marking at the bottom of the curve

The formula for calculating the volume of a rectangular object is: Volume = Length x Width x Height

Why is the unit cm³ used when calculating the volume of a rectangular object? When multiplying the object’s length, width and height, the cm units are also multiplied cm x cm x cm = cm³

Volume = Length x Width x Height Suppose a cereal box is 10 centimeters long, 4 centimeters wide, and 20 centimeters high. What would be the volume of the box? Volume = Length x Width x Height Volume = 10 cm x 4 cm x 20 cm Volume = 800 cm³

What is the SI unit used to measure time? The second(s) is the SI unit to measure time

A common unit to measure temperature is the ___ ___. Celsius scale

Water freezes at ______ and boils at ______. 0 °C 100 °C

The normal human body temperature is approximately ________. 37 °C

What instrument is used to measure temperature? Thermometer