Energy Concepts

How long can a 60-watt lightbulb be powered by the energy required for one typical Google search?

• 0.2 seconds

• 3.6 seconds

• 18 seconds

• 60 seconds

Which of the following is considered a form of potential energy?

• Electricity

• Chemical energy

• Motion

• Heat

Which law of thermodynamics states that energy cannot be created or destroyed, only converted from one form to another?

• The First Law of Thermodynamics

• The Second Law of Thermodynamics

• The Law of Conservation of Mass

• The Law of Entropy

What is the definition of power in the context of energy?

• The total amount of energy stored in a system.

• The ability to do work or transfer heat.

• The rate at which energy is used or transferred.

• The efficiency of energy conversion from one form to another.

What is the standard SI unit for energy?

• Watt

• Calorie

• Joule

• Newton

Which of the following correctly defines a Watt (W)?

• Joules per meter

• Newtons per second

• Joules per second

• Kilograms per meter

How many Joules are equivalent to 1 kilojoule (kJ)?

• 10 J

• 100 J

• 1000 J

• 10000 J

A 75 Watt lightbulb is left on for 24 hours. How much energy, in kilojoules (kJ), does it consume?

• 1800 kJ

• 6480 kJ

• 7500 kJ

• 18000 kJ