feb mocks

Question 1

Explain how irradiating and contaminating the water affected the hazard caused by drinking the water.

Answer 1

Irradiating- Radiation enters the water, doesn’t affect the hazard.

Contaminating- Radioactive isotopes will enter the water increasing the hazard.

Question 2

What are the details of the plum pudding model and the nuclear model of the atom?

Answer 2

The plum pudding model was replaced by the nuclear model due to Rutherfords gold foil experiment which demonstrated that atoms have a small dense nucleus contradicting the idea of a uniform distribution of charge in the plum pudding model.

Question 3

Explain how the motion of the particles in warmer air causes an increase in the power that is transferred to the turbine

Answer 3

-Motion of particles are warmer
-They gain kinetic energy
-More collisions
-Force of collisions are greater
-More energy is transferred

Question 4

Explain why efficient energy storage is important in reducing the amount of CO2 released when generating electricity

Answer 4

-allows storage of excess renewable energy for use when demand is high
-maintains grid stability
-reduces need for backup fossil fuel plants
-minimising wasted energy