Measurement

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Measurement
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What kinds of things can you measure?Make a list.

• Height
• Weight (Mass)
• Distance
• .
• Are any things on your list similar to each
  other, can you group them??

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Important measurements include
Time -
..
Length -
Distance between two points
Area -
Amount of surface
Volume -
Amount of space an object takes up
Mass -
Amount of matter in an object
How hot or cold something is
Temperature -
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Units

• What are they??

Standard we use for comparing measurements
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Long, long ago

• Length
• Cubit elbow to tip of finger
• Span thumb to little finger

Why do some people use miles and inches and other
people use centimetres and kilometres??
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Units

• Standard Internationale
• S.I. unit

S.I. is the scientific unit used by scientists
and engineers across the world
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What instrument do we use to measure temperature?
Thermometer
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What is the unit for temperature?
degree celsius
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How do you measure mass?
Mass is measured in ________________
Kilograms (kg)
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What unit do we use to measure time?
seconds minutes hours
seconds
S.I. unit for time is __________
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How can we measure length?

• Ruler or metre stick

• Opisometer

• Trundle wheel

• Callipers

• Vernier callipers

metres (m).
Length is measured in __________
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What is the unit for length?
metres
Kilometres (km) 1000m Metre (m)
100cm Centimetre (cm) 10 millimetres (mm)
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What units do we use for measuring very long
distances?
kilometre
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What do we use to accurately measure very short
distances?
Callipers
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Remember!
Measurement
Units
Length -
Distance between two points
m
Time -
Temperature -
kg
Mass -
Amount of matter in an object
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Question to think about!
What would it be like to live in a world without
measurement?
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What do we use to measure curved lines
opisometer
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How can we measure area?
l
Regular shape
Use a ruler to measure the length of each side.
Multiply one side by the other to find the area.
Area l x b
b
Irregular shape
You must know the area of each square on the
graph paper.
Use graph paper. Draw around the object and then
count the squares inside the lines.
metres squared (m2).
Area is measured in__________________
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How can we measure volume?
l
b
Regular object
h
(v l x b x h)
Use a ruler to measure length, breath and height.
Multiply length by breath by height.

Irregular object or liquid
Use a measuring cylinder. How?
Volume is measured in ________________
metres cubed (m3).
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Remember!
Measurement
Units
Length -
Distance between two points
m
Area -
Amount of surface
m2
Volume -
Amount of space an object takes up
m3
kg
Mass -
Amount of matter in an object
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Review Questions
1. What do we use to find the volume of an
irregular solid?
HINT
2. What do we use to find the mass of an object?
HINT