Safety
If your toaster is jammed always do this first before fixing it.
What is unplug it?
lightning, fireflies, static electricity
What are examples of natually occuring electricity?
Where will you find EnerGuide labels?
What is on all new appliances sold in Canada?
What is an open circuit?
What is a circuit that does not allow a complete path for the electricity therefore the bulb does not light?
When the pointer on an electrical meter is between two numbers always choose the __________ number.
What is the lower number?
Two safety rules.
What is... - don't create an electric octopus - always unplug electric devices before cleaning or repairing - never pull a plug out of an outlet by pulling on the wire - don't run wires under rugs or carpets - never put your finger in an empty socket - always replace a damaged electrical cord - fly kites only in open spaces - never touch loose, hanging wires - never use electrical devices near water - don't climb in trees near power lines - only electrical plugs go into a wall outlet
paper clips, car keys, scissor blades
What are conductors?
What is a closed circuit?
What is a circuit that allows a complete path for the electricity and so the bulb lights?
Electricity flows from the __________ terminal to the __________ terminal of a cell.
What is the negative terminal to the positive terminal?
Why is a short circuit unsafe?
What is can cause a fire?
X-box, washing maching, vacuum
What are examples of electrical devices used by humans?
Give two ways to create an open circuit.
What is - remove the battery - disconnect a wire from the battery - remove the bulb - disconnect a wire from the bulb
What 3 items items do you need to create an electromagnet?
True or False? When there is a lightning storm the safest place to be is under a tree.
What is false?
plastic ruler, rubber gloves, wood
What are insulators?
Give an example of a resistor in use in our homes.
What is - dimmer switch - iron - toaster - stove
What are the 'arms' that pull and push magnets away from one another called?
What is magnetic field?
Why is a battery operated radio better to have in the bathroom than a plugged in one?
What is a plugged in radio has a continuous flow of electricity and you can be electrocuted whereas a battery operated radio has a finite amount of electricity and you will just be shocked?
cobalt, steel, nickel
What are examples of materials attracted to magnets?
Which is more efficient - an appliance that uses 670 kWh/year or one that uses 60 kWh/month?
What is the appliance that uses 670 kWh/year? 60 x 12 = 720 kWh/year
How does adding a resistor to a circuit affect the lighting of the bulb? Why?
What is the bulb lights dimly or does not light at all because the electricity is slowed down?
Where is the earth's magnetic field the strongest?
What is at the poles?