| Flight outcomes Junior science |
|
| At the end of this unit of work students must be able to: | |
| History of flight | |
| - explain how a hot air balloon works using the word buoyancy and density. | Link |
| - be able to devise a simple experiment to measure the buoyant force exerted on a floating or submerged object. | Link |
| - give a brief, historical account of the evolution of flight, from the advent of hot air balloons to the V2 rocket. |
Link |
| Bernoulli's Law | |
| - describe Bernoulli's law. | Link |
| - using Bernoulli's law, explain how a wing generates lift. | Link |
| - use Bernoulli's law to explain a given set of every day situations, such as how a chimney works or how air pressure blows the roof off a house during high winds. | Link |
| -demonstrate an understanding of Bernoulli's law by completing an assignment. | |
| Newton's 3rd Law of Motion | |
| - explain Newton's Third Law of Motion | Link |
| - use Newton's Third Law of Motion to describe how a propeller plane produces thrust. | |
| - use Newton's Third Law of Motion to describe how a rocket engine produces thrust. | Link |
| Forces | |
| - describe the forces acting on a plane as lift, thrust, drag and gravity and explain how each force is generated. | Link |
| - describe how the forces acting
on a model rocket change as it launches skyward. Click for a printable copy. |
Link |
| - describe a force as a push or pull. | Link |
| - recall that forces act in pairs and identify some of the pairs of forces acting on a plane and a rocket. | Link |
| - recall that change occurs when forces become unbalanced and give examples of such imbalances during rocket launches or when planes take off. | Link |
| - recall that force = mass X acceleration and explain that an object traveling with a constant velocity has no net force acting on it. | Link Link |
| - read from a velocity vs time graph and identify the time interval in which acceleration is taking place and therefore a force is acting on the object. | |
| Energy | |
| - recall the Law of Conservation of Energy | Link |
| - recall with examples some of the different types of energies. Energies such as heat energy, chemical potential energy, gravitational potential energy and kinetic energy. | Link |
- explain the transformation
of energies during a typical model rocket launch |
Link |
| - identify chemical potential energy as the source of energy for all rocket launches | Link |
| Activities | |
| Building
a hot air balloon |
|
| Demonstrations | |
| Air
pressure crushing a can |
|
| Revision assignment | |
| Revision test | |
| Year 8 Workbook | |