Thermometers

a) What is a thermometer used for?

 
 
 
b) What happens to the liquid in the thermometer when it is moved from a cold place to a warm place?

 
 
 
 
 
c) What temperature is shown on these thermometers?
  i)

 
ii)

 
iii)

 
iv)

 
 
  __________ ºC
 
__________ ºC
 
__________ ºC
 
__________ ºC
 
 
d) Why do hospitals often take the temperature of people who are not well?