What is Temperature?
• Temperature may be defined as the
condition of a body which determines the
transfer of heat to or from other bodies.
• Use thermometers to determine
temperature
Temperature:
degree Celsius (°C)
Thermometer A
Thermometer A is calibrated such that
the smallest division shown represents
two Celsius degrees. The temperature
of the sample was for certain greater
than 18°C and less than 20°C
Thermometer B
Thermometer B is calibrated such
that the smallest division represents
one Celsius degree. When reading
this thermometer we can see that
the temperature of the sample was
for certain greater than 21oC and
less than 22oC
What is the
temperature reading
of the thermometer
and how many
significant figures are
allowed for this
reading?