Energy

What is the definition of energy?

• The capacity of a physical system to do work or produce heat.

• The ability of an object to move

• The temperature of an object

• The force exerted on an object

Name three different forms of energy.

• Electrical energy

• Chemical energy

• Nuclear energy

• Kinetic energy, Potential energy, Thermal energy

What is the unit of energy?

• Joule (J)

• Newton (N)

• Volt (V)

• Watt (W)

What is the law of conservation of energy?

• Energy can be created but not destroyed.

• Energy can be destroyed but not created.

• Energy can be both created and destroyed.

• Energy cannot be created or destroyed, only transferred or transformed.

What is kinetic energy?

• The energy possessed by an object due to its motion.

• The energy possessed by an object due to its shape.

• The energy possessed by an object due to its temperature.

• The energy possessed by an object due to its position.

What is potential energy?

• The energy possessed by an object due to its motion.

• The energy possessed by an object due to its temperature.

• The energy possessed by an object due to its color.

• The energy possessed by an object due to its position or condition.

What is the formula to calculate kinetic energy?

• KE = m * v

• KE = m * v^2

• KE = 1/2 * m * v

• KE = 1/2 * m * v^2

What is the formula to calculate potential energy?

• potential energy = mass * acceleration * height

• potential energy = force * distance

• potential energy = mass * gravity * distance

• potential energy = mass * gravity * height

What is the difference between renewable and non-renewable energy sources?

• Renewable energy sources can be replenished naturally, while non-renewable energy sources are finite and cannot be replenished.

• Renewable energy sources are less efficient than non-renewable energy sources.

• Renewable energy sources produce more pollution than non-renewable energy sources.

• Renewable energy sources are more expensive than non-renewable energy sources.

Give an example of each: renewable and non-renewable energy sources.

• Geothermal energy, tidal power, biomass, coal, natural gas

• Geothermal energy, tidal power, biomass, oil, nuclear energy

• Geothermal energy, tidal power, biomass, solar power, wind power

• Solar power, wind power, hydropower, fossil fuels, nuclear energy