Chapter 15 Time And Temperature Worksheet Page 18
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TIME AND TEMPERATURE (Chapter 15)
4
Find how long it will take to travel:
90 km at 30 km per hour
720 km at 120 km per hour
a
b
440 km at 80 km per hour
750 km at 90 km per hour
c
d
208 km at 64 km per hour.
e
H
TEMPERATURE CONVERSIONS
o
In most of the world, temperatures are measured in degrees Celsius (
C).
o
0
C is the temperature at which pure water freezes.
DEMO
o
100
C is the temperature at which pure water boils.
o
In a few countries, such as the USA, the Fahrenheit scale (
F) is still used.
o
32
F is the temperature at which pure water freezes.
o
212
F is the temperature at which pure water boils.
o
o
o
o
The following graph allows us to convert from
C to
F or from
F to
C.
Celsius (°C)
°C
°F
100
100
212
80
60
40
20
Fahrenheit (°F)
0
32
0
40
80
120
160
200
DEMO
EXERCISE 15H
o
o
1
Convert these
C temperatures into
F temperatures:
o
o
o
o
50
80
20
¡5
a
b
c
d
C
C
C
C
o
o
2
Convert these
F temperatures into
C temperatures:
o
o
o
o
100
50
80
0
a
F
b
F
c
F
d
F
o
o
F temperatures is F = 1:8 £ C + 32:
3
The formula for converting
C temperatures into
Use this formula to check your answers to question 1.
o
o
4
The formula for converting
F temperatures into
C temperatures is
C = 5 £ (F ¡ 32) ¥ 9.
a
Use the formula to check your answers to question 2.
o
o
If you are in New York and the temperature is 90
b
F, what is the temperature in
C?
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