 |
|
|
A Calorie
|
A calorie is the amount of energy required to raise the temperature of one gram of water from 14.5 to 15.5 degrees centigrade.
Key concepts:
- a calorie is a unit of measurement that scientist and engineers use to measure energy transactions.
- a calorie is a very small unit of measurement. One thousand (1,000) calories is called a kilo-calorie (written kcal). Kcals are more practical units of measurement.
- the range of temperature (14.5 to 15.5 degree centigrade) is an important part of the definition. Any other temperature range would result in either a slightly smaller or slightly larger calorie.
|
Science@a Distance
© 2001, Professor John Blamire |
|
e-learning for