Water Resistance KS2
Teaching water resistance in KS2 is a great way to help children understand how forces affect movement. Water resistance is a type of friction that acts on objects moving through water. The faster an object moves, the greater the water resistance acting against it.
Learning about water resistance helps children explore how forces work in everyday life, from swimming and rowing to the design of boats and submarines, and the adaptations of aquatic animals.
Teaching water resistance in KS2?
Save planning time with our ready-to-teach water resistance lesson for Year 5, including lesson plan, teaching slides and a range of printable activities for adaptive teaching.
What is water resistance?
Water resistance is a force that slows down objects moving through water. It acts in the opposite direction to the object's movement. Water particles push against the object, creating resistance that makes it harder for the object to move.
Water resistance is similar to air resistance, but because water is much denser than air, the force is usually much greater.
For example:
- A swimmer experiences water resistance as they move through a swimming pool.
- A speedboat's shape is designed to reduce water resistance and move more efficiently.
- A parachute used underwater would create a large amount of water resistance.
Water Resistance KS2 Experiments and Investigations
One of the best ways to teach water resistance KS2 is through practical investigations. Children can test how different shapes move through water and identify which designs create more or less resistance.
Ideas for investigations include:
- Comparing different shaped objects dropped into water.
- Testing how quickly model boats move through water.
- Investigating how changing the surface area of an object affects water resistance.
- Exploring why some aquatic animals have streamlined bodies.
These activities encourage children to make predictions, carry out fair tests and draw conclusions from their results.
Water Resistance Year 5
Water resistance Year 5 is taught as part of the Forces topic in the National Curriculum. Children learn that unsupported objects fall towards the Earth because of gravity and that forces such as air resistance, water resistance and friction act between moving surfaces.
By Year 5, pupils should be able to explain how water resistance affects movement and recognise that different shapes experience different amounts of resistance when travelling through water.
Examples of Water Resistance in Everyday Life
Children encounter water resistance in many real-world situations. Discussing familiar examples can help make the concept easier to understand.
- Swimming through water
- Rowing a boat
- Sailing
- Diving
- Submarines travelling underwater
- Fish and marine animals moving through oceans and rivers
Many of these examples demonstrate why streamlined shapes are important for reducing resistance and improving efficiency.
Teaching Water Resistance with PlanBee
If you're teaching water resistance as part of a Year 5 Forces unit, our Forces in Action lesson pack includes a ready-to-teach lesson exploring how water resistance affects movement. The lesson contains engaging activities, clear explanations and practical opportunities for children to investigate forces for themselves.
👉 View the Water Resistance Lesson
Water Resistance KS2 FAQs
What is water resistance?
Water resistance is a force that opposes the movement of an object through water, slowing it down.
Is water resistance a type of friction?
Yes. Water resistance is a form of friction that occurs when an object moves through a liquid.
Why do streamlined shapes reduce water resistance?
Streamlined shapes allow water to flow more easily around an object, reducing the amount of resistance acting against it.
When is water resistance taught in primary school?
Water resistance is typically taught in Year 5 as part of the Forces topic in the National Curriculum.
