Energy changes in nature and technology
- State that heat is a form of energy
- State that temperature tells how hot an object is
- Explain the difference between temperature and heat
- State that heat exchange between objects is a form of energy transfer
- Recall that heat moves from warm to cold objects
- Explain how a thermal power station works
- State ten forms of energy
- Recall that energy is measured in joules
potential energy & kinetic energy
- State the formulae $${PE = mgh}$$ and $${KE = \frac{1}{2}mv^2}$$
- Rearrange these formulae and use them to solve problems
energy transfers
- Describe energy transfers in a range of transducers
- List energy chains in nature, technology and everyday life
- Draw a Sankey diagram
- State the law of conservation of energy
- Discuss examples of energy conservation
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efficiency
- State and use the formula $${ \text{Efficiency} = \frac{\text{useful energy out}}{\text{total energy in}}}$$
- Discuss examples of energy degradation
- Explain the idea of energy degradation
- Assess and rate ways through which we could save on our usage of energy
- Discuss problems of our energy supply system
heat capacity
- State and use the equation $${Q = m \cdot c \cdot \Delta t}$$
- Calculate specific heat capacity values
- Compare the specific heat capacity values of different material
- Design an experiment to measure efficiency of warm bodies e.g. calorimeter
- Discuss the environmental impact of different types of power stations