CIE iGCSE Co-Ordinated Science P1.6.1 Energy Exam Style Questions Paper 1
▶️ Answer/Explanation
The joule (J) is the SI unit of energy. Watt (W) is the unit of power, newton (N) is the unit of force, and kilogram (kg) is the unit of mass.
✅ Answer: (D)
✅ Answer: (D)
▶️ Answer/Explanation
Moving air has kinetic energy, which turns the turbine blades.
The spinning blades drive a generator, which is the part of the system that produces electrical energy.
The useful overall transfer is therefore from kinetic energy (of the wind/blades) to electrical energy.
✅ Answer: (C)
The spinning blades drive a generator, which is the part of the system that produces electrical energy.
The useful overall transfer is therefore from kinetic energy (of the wind/blades) to electrical energy.
✅ Answer: (C)
▶️ Answer/Explanation
At P, the skier is at rest at a height, so all their energy is gravitational potential energy.
As the skier moves down the slope, this converts into kinetic energy.
At Q, the skier comes to rest, so the kinetic energy is converted into thermal energy through friction.
✅ Answer: (B)
As the skier moves down the slope, this converts into kinetic energy.
At Q, the skier comes to rest, so the kinetic energy is converted into thermal energy through friction.
✅ Answer: (B)
▶️ Answer/Explanation
A battery stores energy in chemical form within its internal reactants.
When connected in a circuit, this chemical energy is converted into electrical energy to drive a current.
✅ Answer: (A)
When connected in a circuit, this chemical energy is converted into electrical energy to drive a current.
✅ Answer: (A)
Question
Which two quantities are used to calculate power?
A. distance moved and time taken
B. speed and distance moved
C. work done and speed
D. work done and time taken
▶️Answer/Explanation
Answer: D
Explanation: Power is calculated as work done divided by time taken (P = W/t).