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Year 8

Forces

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Worksheet

What are forces?

Use your knowledge and understanding of forces to make a summary of what you know about forces and their applications for a Year 6 class.


Include

force diagrams of objects moving or still

Hooks law diagram

key words

weight, electrostatic, upthrust, gravity, reaction force, gravity, friction, hook’s law, extension, tension and air resistance

Level

Marking Criteria

3

  • Simply state some effects of forces.
  • Include a few pictures to show different types of forces.
  • Name some forces.
  • Identify where a force might be on the pictures.

4

  • State some effects of forces.
  • Include some pictures showing familiar forces.
  • Label the pictures with the names of the forces.
  • Draw some arrows in the direction of the forces.

5

  •  Describe the effects of some familiar forces.
  •  On a range of pictures of forces, identify some names of forces in pairs.
  •  Use force arrows to show the direction of the forces for some diagrams.
  • Identify which forces are contact forces and which are field forces.

6

  • Most forces are represented in pairs.
  • Force arrows are drawn accurately in proportion to one another, clear demonstration of balanced and unbalanced forces. Learners must show understanding of reaction force and the forces at steady speed.
  • Size of forces may be shown – perhaps through research using secondary resources.

7

  •  Draw force diagrams to show the size and direction of the forces.
  •  Label force arrows using key words.
  •  Identify pairs of forces as balanced or unbalanced and draw arrows clearly to show this.
  •  Explain why forces are balanced or unbalanced.
  •  Estimate the size of the forces, using the correct units.
  • Explain why friction increases as speed increases using a particle model.

8

As for Level 7, but also:

  • Explain in detail why forces are balanced or unbalanced.
  • Explain in detail why friction increases as speed increases using a particle model.

EP

As for Level 8, but also:

  • Explain in detail why “reaction forces” must exist.

OR:

  • Use detailed force diagrams to explain the difference between mass and weight.