The Tools of Physical Science. Objectives Today we will learn –About graduated cylinders –About triple beam balances –About the three temperature scales.

The Tools of Physical Science

Objectives

• Today we will learn – About graduated cylinders– About triple beam balances– About the three temperature scales– The definition of mass, volume and

temperature.

Daily Deep Thought

Why are there flotation devices under airplane seats instead of parachutes?

Tools for Measuring Volume

The Graduated Cylinder

Volume: A measure of the amount of 3 dimensional space an object occupies.

Base Metric Unit = Liters

An object dropped into a cylinder will displace an amount of water equal to its volume!

Using a Graduated Cylinder

Meniscus

Always measure to the meniscus

40 ml

Other ways to find volumeOther ways to find volume

Volume of a cube = L x W x HVolume of a cube = L x W x H

3 cm

3 cm

3 cm

So, 3cm x 3cm x 3cm = 27cm3 or 27 ml !!!!So, 3 cm x 3 cm x 3 cm = 27 cm3

Demo: Which has more water??

If 1000 ml = 1000 cm3

Then 1 ml = 1 cm3

Beakers

Flasks

Erlenmeyer Round Bottom

Tools for finding mass

The Triple Beam Balance

Mass: The amount of matter in an object

Base Unit = Grams

Tools for Measuring Length

The Meter Stick

The Thermometer

Temperature: A measure of the energy in an object.

• How hot or cold something is!

Units = Degrees Celsius

Other ToolsSpring Scale

Measures Force of Gravity

Units = Newtons

Stopwatch

Measures time

Units = Seconds

Knowledge Check

Which tool is used to find Volume?

A. Triple Beam Balance

B. Graduated Cylinder

C. Thermometer

D. Meter Stick

Define Mass:

The amount of matter in an object

Define Volume:

The amount of 3 dimensional space an object occupies

What unit of measure do we use to express volume?

Liter

What unit of measure do we use to express mass?

Gram

The cubic centimeter (cm3) is the same as what measure of volume?

The Milliliter (ml)

According to the Celcius scale, at what temperature does water boil?

100 oc

What does a spring scale measure?

Force exerted by earth’s gravity

Define Temperature

The amount of energy in an object.

What is normal body temperature in degrees Celsius and Fahrenheit?

37o c or 98.6o F