The Tools of Physical Science. Objectives Today we will learn –About graduated cylinders –About...
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Transcript of The Tools of Physical Science. Objectives Today we will learn –About graduated cylinders –About...
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
