3Force-7
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Contents
Outcomes
Pupils should be able to give examples for, label and name a range of forces including
- Lift
- Spring Force
- Electrical Force (electrostatic attraction/repulsion)
- Magnetic Force
Specification References
1.7 Express a force as a push or a pull of one body on another
1.8 Identify various types of force (e.g. gravitational, electrostatic etc)
Starter
Recap the 8 forces covered so far.
Main Body of Lesson
- The force circus has now been split in three. To get through the circus I suggest talking through each station with the entire group having different pupils undertaking the experiment as you go. There is also a powerpoint with some simple definitions of the 4 forces covered in this lesson.
- Laminated copies are provided with the circus- copy in science shared
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
The second homework sheet contains more free-body diagrams and questions.
Additional Information
Resources Required
- Electrical Force - balloons for electrostatics, rice in a plastic bottle charging polythene rods and using watch glass show repulsion
- Lift - wing
- Magnetic - 2x bar magnets, iron filing in a boiling tube, horse shoe magnets attached to two vehicles with ability to reverse them, magic floating paperclip
- Spring force- spring and masses, rubber bands, squashy ball
Textbook References
- None
Website References
- None
Skills Addressed
Safety/Hazards
- When using springs, goggles must be worn
- General Laboratory Health and Safety Risk Assessment
Notes
- None
