January 2015 Flashcards
1
Q
How do earth wires reduce the possible dangers?
A
Charge moves which discharges the tanker.
2
Q
Why might a value not be accurate?
A
Parallax error, zero error.
3
Q
How can you investigate the relationship between the temperature and the volume of air at constant pressure?
A
- Need a thermometer.
- Measure volume using ruler.
- Vary temperatures.
- Repeat.
- Draw graph to display figures.
4
Q
Why does gravitational potential go when an object falls?
A
GPE depends on height, and height is reduced.
5
Q
How is something shown on a graph not to be digital?
A
More than two values, shape on graph changes.
