P1.5-KS3

1.5 Balanced and unbalanced

Resource

Exit pass

Exit pass ans

Launch

Developing

Master

Extension

Video Resource

NerfGun.mp4

Nerf Gun

Video incase of failure to fire. Link to blog here

Practical

1.5 Balanced and unbalanced


Demo :

  • Nerf Gun (home built)


Round robin -

  • Mass from a rubber band
  • Floating test tube inside boiling tube
  • A tray
  • Toy parachute (to be dropped)
  • A magnet hanging from stand - and single magnet
  • Balanced Pully (two equal masses either side)


  • A Constant velocity car (home)


Students wander around identifying the force pairs and saying if Balanced

Risk assessment:

  • No risk- pressure quite low - just donot point at students and follow CLEAAPS guidelines when firing fixed to desk



Risk assessment:

  • None- but keep an eye on the more fun equipment (car) - make sure students understand constant velocity car.

Target:

• Identify familiar situations of balanced and unbalanced forces

• Define equilibrium

• Identify when the speed or direction of motion of an object changes

• Present observations in a table with help


• Describe the difference between balanced and unbalanced forces

• Describe situations that are in equilibrium

• Explain why the speed or direction of motion of objects can change

• Present observations in a table including force arrow drawings


• Explain the difference between balanced and unbalanced forces

• Describe a range of situations that are in equilibrium

• Explain why the speed or direction of motion of objects can change using force arrows

• Predict and present changes in observations for unfamiliar situations