National curriculum content
- Explain that unsupported objects fall towards the Earth because of the force of gravity acting between the Earth and the falling object
- Identify the effects of air resistance, water resistance and friction, that act between moving surfaces
- Recognise that some mechanisms including levers, pulleys and gears allow a smaller force to have a greater effect
- Explain gravity
- Explain the effect of air resistance
- Explain the effect of water resistance
- Explain the effect of friction
- Identify different mechanisms, including levers, gears and pulleys
What we want children to know
- That objects fall towards the Earth because of the force of gravity acting between the Earth and the falling object.
- How air resistance is the force of the air on the parachute.
- Explain friction in relation to different surfaces.
- How water resistance is a force that can slow objects down.
- That forces can be altered using levers, pulleys and gears.
What skills we want children to develop
- Plan different types of scientific enquiries to answer questions, including recognising and controlling variables where necessary.
- Take measurements, using a range of scientific equipment, with increasing accuracy and precision, taking repeat readings when appropriate.
- Record data and results of increasing complexity using scientific diagrams and labels, classification keys, tables, scatter graphs, bar and line graphs.
- Use test results to make predictions to set up further comparative and fair tests.
- Report, and present findings from enquiries, including conclusions, causal relationships and explanations of and degree of trust in results, in oral and written forms such as displays and other presentations.
- Identify scientific evidence that has been used to support or refute ideas or arguments.
air resistance, force meter, friction, gravity, Newton, non-contact force, reliable, water resistance, weight.