Video and lesson investigations on the topic of . Key concepts include:
- Smooth, slightly pointed shapes can move quickly in water.
- Humans often copy nature.
- Streamlining reduces the effects of ‘drag’ between water and the objects moving through it.
- The medium through which an object travels offers resistance to that object. Liquids (such as water) offer more resistance than gases (such as air) because the molecules which make up liquids are much closer together than in a gas. Quite simply, there is more room to move.