‘‘Convection Currents’’ , Practical Activities (pg125)

1) Explain what causes convection currents
Convection Currents occur by hot air rising and cold air sinking. This is because hot air is lighter wheras cold air is completley opposite meaning it is heavier.

2) Use a diagram to clarify what a ‘hot’ current does.

http://cgz.e2bn.net/e2bn/leas/c99/schools/cgz/accounts/staff/rchambers/GeoBytes%20GCSE%20Blog%20Resources/Images/Plate%20Tectonics/Plate%20Tectonics/ConvectionCurrent_labelled.jpg

3) Identify the direction of a ‘cold’ current.
A cold current spins in an anti-clockwise direction

Conclusion

The hypothesis had turned out to be correct for thst the hot dye had risen and the cool dye had fell. This had been proven right because hot air is known to rise and cold air is known to sink.