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calculation week - composite quantities
- calculation week -
composite quantities
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Slide 1:
Slide
Nask / Biologie
Middelbare school
havo, vwo
Leerjaar 1
This lesson contains
28 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
60 min
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Items in this lesson
- calculation week -
composite quantities
Slide 1 - Slide
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 - Slide
Kilometer is a ...
A
Quantity
B
Unit
Slide 3 - Quiz
Mass is a
A
quantity
B
unit
Slide 4 - Quiz
Quantity
Unit
mm
time
kilogram
mass
volume
litre
length
minute
Slide 5 - Drag question
What does composite mean?
A
combined
B
simple
C
to make
D
to write a song
Slide 6 - Quiz
name three composite quantities
Slide 7 - Mind map
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 - Slide
Name the two quantities that compose SPEED.
Slide 9 - Open question
Name the two quantities that compose concentration.
Slide 10 - Open question
Name the two quantities that compose density.
Slide 11 - Open question
what the first step of
calculating with a ratio table?
Slide 12 - Mind map
What mustn't you forget
when calculating with a ratio table?
Slide 13 - Mind map
NO LAPTOP!
Just your pencil case and calculator!
Slide 14 - Slide
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 - Slide
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 - Slide
25
..........
0,5
1
km/h
distance (km)
time (h)
the speed = ..........
Slide 17 - Drag question
The unit for speed is
A
s
B
v
C
m/s
D
km/min
Slide 18 - Quiz
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 - Quiz
White board challenge
every team gets 2 white boards
answer the questions correctly using a ratio table
Slide 20 - Slide
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 - Slide
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 - Slide
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 - Slide
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 - Slide
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 - Slide
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 - Slide
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 - Slide
density questions
Slide 28 - Slide
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