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calculation week - composite quantities
- calculation week -
composite quantities
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Slide 1:
Tekstslide
Nask / Biologie
Middelbare school
havo, vwo
Leerjaar 1
In deze les zitten
28 slides
, met
interactieve quizzen
en
tekstslides
.
Lesduur 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
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