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Measurement. You are making a measurement when you Check you height Read the time Take your temperature Check the speed of the car What instruments would you use to do these?. Some Tools for Measurement. Measurement in Science. In science we do experiments measure quantities - PowerPoint PPT Presentation
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Measurement
You are making a measurement when you
Check you height
Read the time
Take your temperature
Check the speed of the car
What instruments would you use to do these?
Some Tools for Measurement
Measurement in Science
In science we
do experiments
measure quantities
use numbers to report measurements
Learning Check
What are some SI units that are used to measure each of the following?
A. length
B. volume
C. weight
D. temperature
Metric System (SI)
A decimal system based on 10 Used in most of the world Used by scientists and hospitals
Units in the Metric System
length metre m
volume litre L
mass gram g
temperature Celsius °C
time second s
Stating a Measurement
In every measurement there is a
Number
followed by a
Unit from the measuring device
Measurement Units used Symbol
Length millimetrecentimetremetrekilometre
mmcmmkm
little k = 1000
Measuring Length
Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg
How many millimeters are in 1 centimetre?
What is the length of the line in centimetres? _______cm
What is the length of the line in millimetres? _______mm
What is the length of the line to the nearest centimetre? ________cm
HINT: Round to the nearest centimetre – no decimals.
1 centimetre = 10 millimetres
Measurement Units used Symbol
Area square centimetre
square metre
cm2
m2
4cm x 4cm = 16 cm2
Measurement Units used Symbol
Volume millilitrelitrecubic centimetrecubic metre
mLLcm3
m3
Measurement Units used Symbol
Mass gram kilogram
gkg
Measurement Units used Symbol
Time second minute hour
sminhr
Measurement Units used Symbol
Speed metres per second
kilometres per hour
ms-1
kmh-1
Measurement Units used Symbol
Temperature degrees Celsius
oC
Measurement Units used Symbol
Measurement activity1.Length of a book2.Length of a bench3.Width of pencil case4.Temperature of tap water5.Hop on one foot6.Circumference of head7.Height of door frame