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Energy and its Forms

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How do we measure the electrical energy our appliances use, and how is it paid for?

Describe how electrical appliances change electrical energy into useful forms, and calculate the energy used in kilowatt-hours and its cost
A practical answer to the N(T) Science point on electrical energy at home. How appliances change electrical energy, and how to work out energy used in kilowatt-hours and what it costs.
8 min answer →

Where does our energy come from, and how can we use it wisely?

Compare renewable and non-renewable energy resources, and describe simple ways to save energy at home
A simple answer to the N(T) Science point on energy resources. The difference between renewable and non-renewable sources, their pros and cons, and practical ways to save energy at home.
8 min answer →

What are the different forms of energy, and how does energy change from one form to another?

Name the main forms of energy, describe how energy is transferred and changed from one form to another, and apply the idea that energy is never destroyed
A simple answer to the N(T) Science point on forms of energy. The main energy types, how energy changes from one form to another, and the rule that energy is never created or destroyed.
8 min answer →

How does heat travel from a hot place to a cold place?

Describe the three ways heat is transferred (conduction, convection and radiation) and explain everyday examples of each
A practical answer to the N(T) Science point on heat transfer. The three ways heat travels, conduction, convection and radiation, with clear everyday examples and how to keep heat in or out.
8 min answer →