Human energy demands
How much energy do we need to
take from food in each 24 hours? The answer depends very much on the
sort of people we are, and particularly on our age and our work.
Some
needs are:
| |
kilojoules per day |
kilojoules per day |
| BOYS AND GIRLS |
|
|
| 0-1 year |
4200 |
|
| 2-6 years |
6300 |
|
| 7-10 years |
8400 |
|
| |
|
|
| TEENAGERS |
BOYS |
GIRLS |
| 11-14 years |
11500 |
11500 |
| 15-19years |
14700 |
10500 |
| |
|
|
| ADULTS |
MEN |
WOMEN |
| Lying in bed all day |
7400 |
6300 |
| Working 8 hours a day: |
|
|
| Light work |
12000 |
9500 |
| Heavy work |
15000 |
12500 |
| Very heavy work |
21000 |
21000 |
| |
|
|
| PREGNANCY |
|
|
| Early months |
|
10000 |
| Late months |
|
11500 |
| Nursing the baby |
|
12500 |
| Some power values |
watts |
| Power of the heart |
1 |
| Power of the brain |
20 |
| Power of a 15 year old student |
350-750 |
A VERSION IN WORD IS AVAILABLE ON THE SCHOOLPHYSICS USB
