1 When a pendulum swings, energy changes from potential to kinetic and back. This is due to: A Law of conservation of energy B Law of friction C Law of gravity D Law of motion
2 The energy of a moving bicycle is: A Kinetic energy B Potential energy C Mechanical energy D Chemical energy
3 Which of the following transforms electrical energy into light and heat? A Incandescent bulb B Battery C Solar cell D Generator
4 When you rub your hands together, what energy transformation occurs? A Mechanical to thermal B Electrical to thermal C Chemical to mechanical D Radiant to thermal
6 Which device converts chemical energy to electrical energy? A Battery B Solar panel C Generator D Motor
7 Which energy transformation occurs in a firecracker? A Chemical to kinetic and thermal B Potential to kinetic C Nuclear to thermal D Electrical to light
8 Which energy is due to the motion of particles in a substance? A Thermal energy B Kinetic energy C Potential energy D Chemical energy
9 A ball thrown upward has maximum potential energy at: A The highest point B The lowest point C Halfway up D At the thrower's hand
11 A wind turbine converts wind energy into: A Electrical energy B Mechanical energy C Chemical energy D Thermal energy
12 The energy obtained from food is a form of: A Chemical energy B Thermal energy C Kinetic energy D Nuclear energy
13 The energy stored in a stretched rubber band is: A Elastic potential energy B Kinetic energy C Chemical energy D Thermal energy
14 Which energy transformation occurs in a gas stove? A Chemical to thermal B Chemical to electrical C Thermal to chemical D Electrical to thermal
15 When a person lifts a box, work is done against: A Gravity B Friction C Air resistance D Magnetic force
16 A rock falls from a cliff. Its potential energy: A Decreases as it falls B Increases as it falls C Remains constant D First increases then decreases
17 The energy of an object due to its position is: A Potential energy B Kinetic energy C Mechanical energy D Thermal energy
20 Which of the following is a renewable source of energy? A Solar energy B Coal C Petroleum D Natural gas
21 The energy of a ball held above the ground is: A Gravitational potential energy B Kinetic energy C Chemical energy D Elastic energy
22 A microphone converts sound energy into: A Electrical energy B Kinetic energy C Thermal energy D Chemical energy
23 What happens to the kinetic energy of a car as its speed increases? A It increases B It decreases C It stays the same D It is converted to potential
24 Which of the following uses geothermal energy? A Hot springs B Solar panels C Wind turbines D Nuclear reactors
25 A machine that converts mechanical energy to electrical energy is a: A Generator B Motor C Battery D Transformer