Revision as of 06:06, 25 August 2010

Outcomes

• Pupils should be able to sketch, draw and interpret a range of distance time graphs.
• Pupils should understand the significance of average speed versus instantaneous speed.
• Pupils should be able to use and recall the relationship <math>avg speed=distance moved/time taken</math>
• Pupils should be able to link the equation above to the orbital speed to planets.
• Pupils need to recall the circumference of a circle equation and the meaning of the term time period.
• Pupils should be able to use the relationship

<math>v= (2xpixr)/T</math>

Specification References

• 1.2 understand and use distance-time graphs
• 1.3 recall and use the realtionship between average speed, distance moved and time: <math>avg speed = distance moved/time taken</math>
• 1.33 use the relationship between orbital speed, distance moved and time: orbital speed = (2 x pi x orbital radius)/time period or <math>v= (2xpixr)/T</math>

Starter

Main Body of Lesson

Forces circus

• File too large to upload - laminated copies are provided with the circus- copy in science shared
• There are student sheets to go with the circus. It includes questions and force diagrams from each station
• File too large to upload - copies can be made from science shared file
• Discuss the stations as a class. There is a powerpoint in science sharered which goes through the student sheets. This is also opportunity to use the hand held white boards to test their understanding.

Plenary

• Set up a balloon which is electrostatically charged, on the ceiling, attach a string with a paperclip at the end. With a strong magnet on a retort stand, arrange it so that it is attacting the paperclip in the horizontal direction. The paperclip could have a wooden block attached to it which is floating in a beaker of water find set up here
• Have students draw and label the forces acting on the balloon and paperclip. Ask them to consider the size, direction and type of force

Homework

• File:Forces homework sheet.doc

Additional Information

Resources Required

• Electrical Force - balloons for electrostatics, rice in a plastic bottle charging polythene rods and using watch glass show repulsion
• Frictional- slope with different objects (car, glass block and wooden block) where they change and measure the angle + hovercraft
• Magnetic - 2x bar magnets, iron filing in a boiling tube, horse shoe magnets attached to two vehicles with ability to reverse them.
• Upthrust - pieces of wood in water, different sized paper boat with paper clips to add, transparent water bath
• Strain/Spring force- spring and masses, rubber bands, squashy ball
• Gravitational – different masses on a Newton Scale, planetry model
• Applied Force – Push or Pull and Thrust – pulling brick with Newton meter, stones on a tray and water jug, stream of peas to drop onto a balance, balloon with a small tube and placed over a large retort stand + balloon pump
• Air resistance force/drag– ball bearing dropping through oil, model of dolphin, dropping ball and feather
• Tension Force- ball and string, tyrolean traverse with barbie attached
• Normal Force- block and strong card

Textbook References

• None

Website References

• None

Skills Addressed

• Obtaining

Safety/Hazards

• A tank with water in it will be heavy and so is only to be moved by the technician; please refer to the Manual handling section of the Laboratory Lessons Health and Safety Risk Assessment
• When using springs, goggles must be worn
• The main risk is from the vacuum pump and apparatus. The specific risk assessment must be read before using the apparatus.
• General Laboratory Health and Safety Risk Assessment

Notes

• None

Forces & Matter Outline

Forces & Matter