Practise explaining how water’s heat capacity, buoyancy, viscosity and conductivity affect the temperature, diving, insulation and movement of aquatic animals.
Water is the medium in which most processes of life occur.
Distinguish between the physical properties of water and air.
a. water has greater viscosity than air;
b. thermal conductivity is higher in water than in air;
c. specific heat capacity is higher in water than in air;
d. water is denser/has more buoyancy than air;
The physical property must be named. Comparative terms are expected, making reference to both eg: accept higher in water, but not high in water.
Marking guidance:
Accept the converse of any of the marking points.