What are the main primary energy sources that humans use?

Why is electricity called a secondary energy source?

What is the definition of a primary energy source?

How do power stations contribute to climate change?

What happens when electric current passes through a component?

What is power a measure of?

What is the equation for calculating the amount of energy transferred?

What is the equation for calculating power?

What does a domestic electricity meter measure energy transfer in?

Why?

How do you calculate the cost of energy?

How do you calculate the efficiency of an electrical appliance?

How could energy usage be reduced in a personal context?

How could energy usage be reduced in a national context?

Why is electricity convenient?

What is mains electricity produced by?

How do generators produce electricity?

How does the size of the current produced by a generator impact the amount of primary fuel it uses?

What happens in a power station?

What type of waste is formed by a nuclear power station?

What does radioactive waste emit?

What happens with increased exposure to ionising radiation?

What is the distinction between contamination and irradiation by a radioactive material?

Why is contamination more dangerous than a short period of irradiation?

What are the benefits of nuclear power?

What are the risks of nuclear power?

What is the mains electricity voltage to our homes?

Why is electricity distributed at high voltages across the National Grid?