1.3 Measuring, Units & Conversions & Mass in the Class

• 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

• Quiz
  
  
• Measure & Calculate the Mass of the Air in the Classroom
  
  
• Conversion of units
  
  
• Making some exercises of 1.3

Which quantity belongs to the unit
kg ?

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

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

Learning objectives

• You can calculate how much mass of air a space contains.
  
  
• You can convert measurement into other units.

How much mass of air is there in this classroom?

.

1. Discuss what you need to calculate and measure this
   
   
2. 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.

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

Exchange:
The following person may explain:

V5

V2

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

Making excercises

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

Read chapter 1.3

Do exercises
26, 32, 33, 30 = homework

(time left? Do 17, 18, 19, 20, 25 from yesterday's lesson)