Q.1
What is a disadvantage of an oven?
  • Large capacity means it is not efficient for cooking small items
  • Can only heat at one temperature
  • Large capacity for cooking multiple items
  • Has a timer
Q.2
Which of the following items use electricity in the home?
  • Book
  • Chair
  • Step ladder
  • TV and computer
Q.3
Which does not normally rely on electricity?
  • Water tap
  • Wireless router
  • Tumble dryer
  • Oven
Q.4
If a 3 kW kettle is switched on for 3 minutes, when compared to a 2 kW toaster switched on for 5 minutes, which uses more energy?
  • Kettle
  • Toaster
  • They use the same amount of power
  • More information is needed to discover which appliance uses the most power
Q.5
Another kettle has a power rating of 3 kW of power and transfers 2 kW of that into heat energy to boil water. How efficient is the kettle?
  • 33%
  • 50%
  • 66%
  • 75%
Q.6
What is an advantage of using a kettle instead of a pan on a gas cooker to boil water?
  • Easier to pour the hot water
  • Faster to boil water
  • There is no advantage
  • More efficient and often faster to boil water
Q.7
Which would be safest and most efficient for toasting bread?
  • Cooker stovetop
  • Toaster
  • Oven
  • Barbecue
Q.8
Which appliance would work if the electricity was not working in a house?
  • Wind-up torch
  • Solar hot water heater
  • Gasoline lawn mower
  • All of the above
Q.9
How much power does a kettle use if it transfers 1,000 joules of energy in 10 seconds?
  • 1 W
  • 10 W
  • 100 W
  • 1,000 W
Q.10
If an electric stovetop uses 75 W of power in 300 seconds to boil water in a pan, whilst a kettle uses 100 W to boil the same mass of water in 150 seconds, which is the more energy efficient appliance to use for this process?
  • Kettle
  • Hob
  • They use the same amount of energy
  • It is impossible to work out
0 h : 0 m : 1 s