1.3 Grading last Infographics - Measuring, Units & Conversions

• Natuurkunde / Scheikunde
• Middelbare school
• vmbo b, k, t, havo, vwo
• Leerjaar 1-3

Regels van orde

1e keer:  Waarschuwing --> Maximaal 3 namen op het bord

2e keer: Kleine schrijfopdracht op de gang

3e keer: Eruit, naar Loket 21

Nooit! 

Geluid uit telefoons / Oordopjes in 
Gooien
Eten/drinken 

Mutsen op / Jassen aan / Tassen op tafel  

Get your things please:                                

1.3 Measuring, Units & Conversions

• Grading last three infographics
• Measuring & Units
• Making some exercises of 1.3

• Conversion of units
  
• Making some exercises of 1.3
  
• Quiz

docs.google.com

Learning objectives

• You can explain the difference between quantities and units.
  
  
• You can convert units into other units.

Measuring

Quantities & Units

quantity	symbol	unit	abbreviat.	m. instrum.
mass	m	kilogram	kg	scales
volume	V	litre	L	graduated cylinder
length/distance	l / s	metre	m	ruler, measuring tape
temperature	T	degree Celcius	°C	thermometer
time interval	t	second	s	clock, stopwatch
number	-	-	-	counter

Scale spacing

&
Measuring range

Measurement
accuracy

How accurate
can you read out the
temperature here?

26°C?  26,0°C? 26,00°C?        

Measurement
accuracy

I would say:

26,0°C +/- 0,5°C

which means

in between 25,5°C and 26,5°C              

How much mass of air is there in this classroom?

.

1. Discuss what you need to calculate and measure this
   
   
2. Let's measure the weight of 1 litre of air!
   
   
3. Make 5 groups of 2 or 3 persons
   
   

How much mass of air is there in this classroom?

.

1. Group 1: Measures the width or the room in m.
   
2. Group 2: Measures the length/depth of the room in m.
3. Group 3: Measures the height of the room in m.
   
   
4. Group 4: Searches internet for the air density
   double check: find it twice on different websites in the unit of kg/m³
   
   5. Collects all data from the groups, writes it on the board
   and calculates mass in kg.

Making excercises

Try it yourself, and feel free to quietly consult your neighbour.

Chapter 1.3

Do exercises
 21, 23, 24, 27 = homework

From mega to micro

• mega                   M                 1.000.000                  million
• kilo                        k                           1.000                   thousand
• deci                      d                                   0,1                one tenth               1/10
• centi                    c                                    0,01             one hundredth    1/100
• milli                      m                                  0,001           one thousandth  1/1000
• micro                  µ                                    0,000 001  one millionth        1/1.000.000

Making excercises

Try it yourself, and feel free to quietly consult your neighbour.

Do exercises
26, 32, 33, 30 = homework

(time left? Finish 21, 23, 24, 27)

Which quantity belongs to the unit
kg ?

1. kilogram
2. gram
3. mass
4. weight

Exchange:
The following person may explain:

V5

V2

If a ruler can measure from 0cm to 20cm, we call this the:

1. scale spacing
2. lenght of the ruler
3. measuring range
4. measuring length

Exchange:
The following person may explain:

V5

V2