calculation week - composite quantities

- calculation week - 
composite quantities
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Slide 1: Tekstslide
Nask / BiologieMiddelbare schoolhavo, vwoLeerjaar 1

In deze les zitten 28 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 60 min

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- calculation week - 
composite quantities

Slide 1 - Tekstslide

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

Slide 2 - Tekstslide

Kilometer is a ...
A
Quantity
B
Unit

Slide 3 - Quizvraag

Mass is a
A
quantity
B
unit

Slide 4 - Quizvraag

Quantity 
Unit
mm
time
kilogram
mass
volume
litre
length
minute

Slide 5 - Sleepvraag

What does composite mean?
A
combined
B
simple
C
to make
D
to write a song

Slide 6 - Quizvraag

name three composite quantities

Slide 7 - Woordweb

composite quantities
speed
v
meter per sec
m/s
or km/h
concentration
c
gram per liter
g/L 

density
p (rho)
gram per cubic centimeter 
g/cm3

Slide 8 - Tekstslide

Name the two quantities that compose SPEED.

Slide 9 - Open vraag

Name the two quantities that compose concentration.

Slide 10 - Open vraag

Name the two quantities that compose density.

Slide 11 - Open vraag

what the first step of
calculating with a ratio table?

Slide 12 - Woordweb

What mustn't you forget
when calculating with a ratio table?

Slide 13 - Woordweb

NO LAPTOP! 
Just your pencil case and calculator!

Slide 14 - Tekstslide

checklist ratio tables
1) Did you collect the data from the question?
2) Does your ratio table start with QUANTITIES - UNITS?
3) Is distance found at the top? Or is mass found at the top?

4) Did you add your calculations at the bottom AND the top?
     Do not round off intermediate steps, leave them on your calculator!

5) Did you write down the answer to the question with a number and a unit? 

Slide 15 - Tekstslide

1hvt - to do today 
materials needed

20 mins

10 mins

finished? 
Pencil case! no laptop!
Don't forget your ruler+calculator tomorrow!
Finish the Small Test. Do 4 assignments!
The Bonus Question is still bonus! A 5th assignment is not. 
Check your answers to the Small Test!
Hand in your Small Test. 
Finish your reader SCIENTIFIC METHOD!
Or read from your book. 
IMPORTANT you also have Thursday to finish the reader. 

Slide 16 - Tekstslide

25
..........
0,5
1
km/h
distance (km)
time (h)
the speed = ..........

Slide 17 - Sleepvraag

The unit for speed is
A
s
B
v
C
m/s
D
km/min

Slide 18 - Quizvraag

Lois runs 75 meters in 15 seconds. What is her average speed in m/s?
A
0,2 m/s
B
0,5 m/s
C
0,4 m/s
D
5 m/s

Slide 19 - Quizvraag

White board challenge
every team gets 2 white boards
answer the questions correctly using a ratio table

Slide 20 - Tekstslide

Question 1
Bert runs a total of 60 kilometers in 3,5 hours. 
Calculate his speed in km/h.
Use a ratio table to answer this question

Slide 21 - Tekstslide

ANSWER 1
1. distance = 60 km, time = 3,5 hours
2. speed = ........... km/h
3.  converting units: - 
4. 


5. answer:    speed = 17,1 km/h
distance (km)
60
60:3,5 = 17,1
time (h)
3,5
1

Slide 22 - Tekstslide

Question 2
Simone drives 170 kilometers in 3 hours and 44 minutes.
Calculate her speed in km/h.
Use a ratio table to answer this question

Slide 23 - Tekstslide

ANSWER 2
1. distance = 170 km, time = 3 hours and 44 minutes
2. speed = ........... km/h
3. converting units: 3 hours = 180 min     180 + 44 = 224 min
4.


5. answer: speed =   45,54    km/h


distance (km)
170
170:224 = 0,7589
0,7589x60 = 
time (min)
224
1
60
never round up in your calculator!

Slide 24 - Tekstslide

Question 3
Rob rides his bike. His speed is 28 km/h.
He drives for 46 km.
How long is he driving?
Use a ratio tabel to answer this question.

Slide 25 - Tekstslide

ANSWER 3
1. distance = 46 km, speed = 28 km/h
2. time = ........... hours
3. converting units: - 
4.


5. answer: time =  1,64 h


distance (km)
28
1
46
time (h)
1
1:28 = 0,0357
0,0357 x 46 = 1,64
never round up in your calculator!

Slide 26 - Tekstslide

Question 4
Aliesha is drving in her car. Her speed is 53 km/h.
She drives for 7 minutes.
How far did she drive?
Use a ratio tabel to answer this question.

Slide 27 - Tekstslide

density questions

Slide 28 - Tekstslide