Science

Science – Electricity Lesson 4

1. Watch the following video clip which explains about electrical conductors and insulators.  https://www.bbc.co.uk/bitesize/clips/zy2qxnb
2. Watch the second clip and then carry out the quick activity at the bottom of the web page. https://www.bbc.co.uk/bitesize/topics/z2882hv/articles/zxv482p
3. Watch the video and note down which materials conduct electricity and which don’t (making them insulators).  https://www.youtube.com/watch?v=3Wl-5w1yCh4
4. Write down your own definition as to what a conductor and insulator are in terms of whether they allow electricity to flow through them.
5. Have a go at the electrical quiz to check your understanding of electrical conductors and insulators.  https://www.educationquizzes.com/ks2/science/electrical-conductors-and-insulators/
6. Do you think humans conduct electricity? Why/why not?  Use scientific language to explain your reasoning.  Then watch this last video clip  to see if you were right. https://www.stevespanglerscience.com/lab/experiments/human-circuit/

Answers from last week’s prediction task!

1. No – the bulb is not connected back to the battery to make a whole circuit.
2. No- the wires need to connect to either end of the battery, not both to the same terminal.
3. Yes!
4. Yes!
5. No – that second wire on the bulb needs to connect back to the battery.
6. Yes… but!  With 2 batteries there is a chance you will ‘blow’ the bulb by introducing too powerful an electrical current.
7. Nope!  No power source!
8. Yes!  The cell/battery is just powering a buzzer instead of a bulb.
9. Yes! As both terminals are on one end of the motor, so that the shaft can turn (the bit sticking out by the word ‘motor’)!
10. No – you would need to connect the two batteries to form a whole loop, but be careful not to ‘blow’ the bulb with 2 batteries.