Mock Corrections Flashcards
1
Q
Suggest why some ceiling lights do not have an earth wire
A
casing is) not made of metal
little / no chance of electric shock
2
Q
Describe how the movements of the copper particles in the wire change when copper melts
A
the particles vibrate about a fixed position regular arrangement
(the particles change) to being free to move around
3
Q
Estimate a cycling speed of 6 m/s compares with walking speed
A
about four times faster
4
Q
Suggest one way the student could stop this hapening
A
any one from:
• move the second light gate
closer to the first
• shorten the string length
