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Questions on Energy Transitions

Q7. The drawings show a weightlifter. The stages in weightlifting are labelled A, B, C, D and E.

(a)

(i) Complete the sentences below.

As the weights were lifted up, energy was transferred from the man to the weights. This energy had been stored as ……………………… energy in the ………………………… of the man's arms.

2 marks

(ii) How was energy stored in the weights at stage C?

A
 as chemical energy
B
 as elastic energy
C
 as kinetic energy
D
 as gravitational potential energy

1 mark

(b) Complete the sentences below.

(i) In stage D, as the weights were falling, the energy was transferred from …………………………… energy to…………………………… energy.

1 mark

(ii) In stage E, as the weights hit the floor, the energy was transferred from …………………………… energy to …………………………… energy.

1 mark

Maximum 5 marks