Science - Electricity (2)

Electricity can be very dangerous. Which of the following safety rules should we follow?

• A and B only

• A and C only

• B and D only

• A, C and D only

Do not use electrical appliances ________.

• A and B only

• A and C only

• B and C only

• A, B and C

Which of the following does not pose a risk of electric shock?

• Using a new electric fan

• Touching switches with wet hands

• Poking a pen into an electrical socket

• Repairing electrical appliances without wearing gloves

Which of the following ways does not help to conserve electricity?

• Use energy-saving bulbs

• Switch on the air conditioner on a cold day

• Switch off the computer before going to sleep

• Switch off the lights when there is sufficient light in the room during the day

A digital alarm clock uses electricity to produce ________.

• heat and light

• light and wind

• light and sound

• heat and sound

Travis received his electricity bill and was shocked by the amount he had to pay. His friend gave him some suggestions on how to save electricity. Which of the suggestions will help him to save electricity?

• A and B only

• C and D only

• A, B and C only

• B, C and D only

Which of these diagrams show examples of using electricity dangerously?

• A and B only

• A and C only

• B and C only

• A, B and C

Which of the statements below are reasons why we should conserve electricity?

• A and B only

• A and C only

• B and C only

• A, B and C

We do not obtain electricity from lightning because it is ________.

• in limited amount

• very hot and dangerous

• a natural source of electricity

• a man-made source of electricity

Which of the following is not an example of saving electricity?

• using a dryer to dry clothes

• using energy-saving bulbs in the house

• opening the curtains to let natural light into the house

• switching off electrical appliances when they are not in use