Flight outcomes Junior science |
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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 |
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Demonstrations | |
Air
pressure crushing a can |
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Revision assignment | |
Revision test | |
Year 8 Workbook |