Download temperature - fifth grade

TEMPERATURE
PART I
The temperature of
something tells us how hot
or cold something is.
TEMPERATURE IS
MEASURED IN
DEGREES USING A
THERMOMETER
IS THE SYMBOL FOR
DEGREES.
100
“100 Degrees”
How to Read a
Thermometer
Temperature
is measured
on two
scales:
Celsius and
Fahrenheit.
37 C
98.6 F
C
“C” is the symbol for
the Celsius scale.
The Fahrenheit scale is the
most popular in the United
States.
F
Its symbol is “F.”
Let’s count by 2’s…
2, 4, 6, 8, 10, 12…
F
The lines on
most
thermometers
count by two’s.
102
100
98
96
94
92
90
What is the
temperature
on this
thermometer?
98 F
“98 degrees
Fahrenheit”
F
100
96
94
92
90
88
Try this one.
F
90
88
86
F
“86 degrees Fahrenheit”
84
82
80
78
76
Normal body
temperature is 98.6 F.
This means it is between
98 and 99 degrees.
98.6 F
This is a decimal point.
.2 .4 .6
96
97
98
99
98.6 F
THE TEMPERATURE IS “98 POINT 6”
DEGREES FAHRENHEIT.
99
100
101
102
What is the temperature?
101.2 F
Try this one.
100
101
102
102.8 F
103
6
NEGATIVE
NUMBERS
The temperature
scale is often seen
vertically.
5
4
3
2
1
0
As the temperature
goes below freezing
we use negative
numbers.
Getting warmer
Water freezing
-1
-2
-3
-4
-5
-6
Getting colder
Fahrenheit (1686-1736) established three fixed points on his
thermometer.
0 degrees: temperature of an ice, water, and salt mixture.
32 degrees: water-ice combination stabilized at "the thirty-second degree."
98 degrees: “when the thermometer is held in the mouth or under the armpit of a
living man in good health."
Celsius (1701-1744) established two fixed points on his
thermometer.
0°C: representing the freezing point of water.
100°C: the boiling point of water.
PROBLEM
 Riki
measured the outside temperature at noon
and then again at 8 p.m. The temperature at noon
was 6°C. The temperature at 8 p.m. was – 2°C.
What was the change in temperature?
1. You can use the thermometer like a number line.
There was a _____change in temperature.
PART II
… HOW CAN I CONVERT FROM CELSIUS TO
FAHRENHEIT OR FAHRENHEIT TO CELSIUS??
FORMULAS


Celsius to Fahrenheit: (°C × 9/5) + 32= °F
Multiply by 9, then divide by 5, then add 32
Fahrenheit to Celsius: (°F − 32) x 5/9 = °C
Deduct 32, then multiply by 5, then divide by 9
IN OTHER WORDS: