Energy; made by Ruby Flashcards
1
Q
What is the correct unit for energy?
A
Joule
2
Q
Which of these foods has the most energy per 100 grams?
- Bread
- Omelette
- Apple
A
Bread
3
Q
What is another name for burning?
A
Combustion
4
Q
Around how many kJ of energy does an adult need per day?
A
8400 kj
5
Q
What are the units of power?
A
Watts
6
Q
How many watts are in a kilowatt?
A
1000
7
Q
`Which of these electric items uses the most power?
- Ovens
- Drill
- Clock
A
Ovens
8
Q
What units do electrical suppliers use for energy?
A
kWh
9
Q
How can energy be released from food?
A
Combustion and respiration
10
Q
What is the term that means the rate at which energy is used?
A
Power
