How much electrical energy does a 0.5 kW fan use if run for 6 hours at 0.5 kW?
A) 3 kWh B) 0.5 kWh C) 5.5 kWh D) 12 kWh Answer: A Explanation: Energy = power × time […]
Energy & Its Forms, Every Day Science
Energy & Its Forms
Energy & Its Forms, Every Day Science
How much electrical energy does a 1 kW heater use if run for 3 hours at 1 kW?
A) 1 kWh B) 2 kWh C) 3 kWh D) 4 kWh Answer: C Explanation: Energy = power × time […]
Energy & Its Forms, Every Day Science
How much electrical energy does a 2 kW iron use if run for 2 hours at 2 kW?
A) 1 kWh B) 4 kWh C) 2 kWh D) 8 kWh Answer: B Explanation: Energy = power × time […]
Energy & Its Forms, Every Day Science
How much electrical energy does a 3 kW appliance use if run for 4 hours at 3 kW?
A) 1 kWh B) 7 kWh C) 24 kWh D) 12 kWh Answer: D Explanation: Energy = power × time […]
Energy & Its Forms, Every Day Science
Identify the term for energy arriving from the Sun.
A) Power B) Chemical energy C) Nuclear energy D) Solar energy Answer: D Explanation: Solar energy means energy arriving from […]
Energy & Its Forms, Every Day Science
Identify the term for energy associated with position in a gravitational field.
A) Wind energy B) Efficiency C) Electrical energy D) Gravitational energy Answer: D Explanation: Gravitational energy means energy associated with […]
Energy & Its Forms, Every Day Science
Identify the term for energy associated with random microscopic motions and interactions.
A) Elastic energy B) Hydroelectric power C) Energy D) Thermal energy Answer: D Explanation: Thermal energy means energy associated with […]
Energy & Its Forms, Every Day Science
Identify the term for the rule that energy is transferred or transformed rather than created from nothing.
A) Potential energy B) Sound energy C) Nonrenewable energy D) Energy conservation Answer: D Explanation: Energy conservation means the rule […]
Energy & Its Forms, Every Day Science
What energy change mainly occurs when a flashlight is switched on?
A) Light to chemical to sound only B) Chemical to electrical to light energy C) Heat to gravity D) Nuclear […]
Energy & Its Forms, Every Day Science
What energy is stored by lifting an object in a gravitational field?
A) Sound energy B) Electrical resistance C) Thermal conductivity D) Gravitational potential energy Answer: D Explanation: Lifting increases gravitational potential […]