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Creado por Liesl Marais
hace casi 6 años
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Cerrar
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Creado por Liesl Marais
hace casi 6 años
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Where does a radio get energy from to make sound?
What energy sources can a radio use?
What is electricity?
In how many directions does electricity flow?
What do we call the flow of electricity?
What creates electrical current?
What are electrons?
What does the current need in order to power something?
What do we call a continuous path along which a current can travel?
What is a battery/ cell?
Give 3 examples of items that only use cells.
Why can we only power small objects with cells?
What is inside the cell that allows it to store energy?
What do we call the two sides of a cell?
Which direction does the current flow in a cell?
How should 2 or more cells be placed against each other in order for the current to flow?
What are electrical circuits made up of?
What are the basic parts of a circuit?
Name 3 things to remember when building a circuit.
What component is this the scientific symbol for?
What component is this the scientific symbol for?
What component is this the scientific symbol for?
What component is this the scientific symbol for?
______________
What component is this the scientific symbol for?
What component is this the scientific symbol for?
What components does this simple circuit comprise of?
Will the lamp light up in this circuit?
What would happen if you released one of the wires from the cell?
What happens when you turn on a light switch?
What happens when you turn off a light switch?
What does a switch do?
What are the components in this circuit?
What will happen when you close the switch?
How would you create a break in the circuit?
What are the components in this circuit?
Why do you need more cells in this circuit?
What would happen if you removed one lamp, why?
What unit do we use to measure electricity?
What does voltage refer to?
What will determine how many cells a circuit needs?
If there is a 3V buzzer in a circuit, how many V should the cell be?
How many 1.5V cells would you need in a circuit in order to power a 3V buzzer?
What voltage do AA batteries have?
What voltage did the lamps in your class experiments require?
What voltage did the buzzer in your class experiments require?
If you have a toy that needs 7.5V, why would it not work properly if you only use two 1.5V cells?
How many 1.5V cells would you need to make a 7.5V toy work?
What is a buzzer?
Does a buzzer require more or less electrical power than a light bulb?
What are the components in this circuit?
How should the buzzer be connected to the cells?
Hint: (+)(-)
How do we make sure the buzzer is correctly connected to the cells?
Will the buzzer in this circuit make a sound, why?
What would happen if you took one cell out of the circuit, why?
What do most homes need to run lights and electrical appliances?
What is mains electricity?
Is mains electricity less or more powerful than cells? What voltage does it use?
Give 3 examples of items that only use mains electricity.
Give 3 examples of items that use cells and mains electricity.
What do we need to do with electrical appliances in order to run them off mains electricity?
Why is it important to use mains electricity carefully and properly?
What can happen if we do not use mains electricity carefully?
Safety rule 1:
What can I safely stick into a wall socket?
Safety rule 1:
What could happen if I stick my fingers or metal objects into a wall socket?
Safety rule 2:
Can I use water and electricity next to each other?
Safety rule 2:
Can I use electrical appliences with wet hands?
Safety rule 3:
Can I plug all my appliances into one wall socket?
Safety rule 3:
What can happen if I overload a wall socket?
Do you think we will still use petrol in our cars in the future?
