Lesson Plan: 1P.4.09

Hamble Lesson Observation Plan
Learning About
How are Forces classified?
Keywords:
  • Air resistance: A force created on a body moving through air. (1)
  • Particles: A term we use to describe a set of similar objects, typically microscopic. (1)
  • Water resistance: A force created on a body moving through water. (1)
  • Drag: A more general term for a force on an object acting in the opposite direction to its direction of travel. (1)
  • Friction (1)
  • Electrostatic: An attraction that causes an attractive force between particles of opposite charge and a repulsive force of similar charges. (1)
  • Contact: Where there two objects do touch each other. (1)
  • Non-contact: Where there two objects do not touch each other. (1)
  • Gravity: An attraction that causes a force between two or more objects with mass. (1)
  • Magnetic: An attraction that causes a field between magnets, ferrous metals or charged particles. (1)
  • Force (1)
Memory Anchor:
Method Precise Learning Objective Linked Question / Activity
(Designed for maximum working out)		 Stepping Stones Pitstop Check
(Thinking Map)
T Forces can also be classified as either: - non-contact forces: - gravity forces acting at a distance on Earth and in space, - forces between magnets, - Electrostatic forces due to static electricity: Rubbed balloon What are the 3 non-contact forces?

Students experience non contact forces with the magnets
T Pushing things out of the way also creates a type of friction: - ball pit balls - air (particles): air resistance - water (particles): water resistance These forces are also called drag. How else, other than rubbing two objects together, can friction be produced? What is this also known as?

DEMO: Dropping flat paper and screwed up paper. Which accelerates fastest? Which has the greatest resultant force? But they have the same weight. DEMO: Dropping Plasticine ball in water and paste
Links To the Big Ideas
ForcesParticlesEnergyCells