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5.04 Energy in the body

Interactive practice questions

According to the table, how many kilojoules would a very active female in her 60's require per day?

Age Activity Level Women (kJ/day) Men (kJ/day)
$18-35$1835 inactive $8000$8000 $10500$10500
  active $9000$9000 $12500$12500
  very active $10500$10500 $14800$14800
$36-70$3670 inactive $8000$8000 $10000$10000
  active $8800$8800 $11800$11800
  very active $10400$10400 $14300$14300
Easy
< 1min

The treadmill at the gym displays the estimated kilocalories that a person has used while on the machine. Vincent was using the treadmill and used $782$782 kilocalories. How many kilojoules is this?

Use the conversion rate of $1$1 kilocalorie$=$=$4.2$4.2 kilojoules.

Easy
< 1min

Ursula is training for a charity walk. In one of her training sessions she wants to burn $2751$2751 kilojoules. How many kilocalories does she have to burn?

Use the conversion rate of $1$1 kilocalorie$=$=$4.2$4.2 kilojoules.

Easy
< 1min

Bob is in his 40's and leads an inactive lifestyle. Today he has a small Greek salad, which contains $446$446kJ.

Easy
1min
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Outcomes

1.3.16

use units of energy used for foods, including kilojoules and calories

1.3.17

use units of energy to describe the amount of energy expended during activity

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