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Forces and Motion

Forces and Motion. Grade 7 Science. Types of Motion. Rectilinear motion – in a straight line . Ex: Skateboard Alternating motion – back and forth in a straight line. Ex: trumpet piston Circular motion – in a curve or circle. Ex: Ferris wheel

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Forces and Motion

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  1. Forces and Motion Grade 7 Science

  2. Types of Motion • Rectilinear motion – in a straight line. Ex: Skateboard • Alternating motion – back and forth in a straight line. Ex: trumpet piston • Circular motion – in a curve or circle. Ex: Ferris wheel • Oscillatory – back and forth around a central point. Ex: swing

  3. Change in Motion • In order to change the motion of an object, a force must be applied. • There are several forces that can change motion: gravitational, push, pull, friction, etc. • Forces can set an object in motion, change the speed or direction of an object, or deform an object.

  4. Flexion Force

  5. Tension Force

  6. Compression Force

  7. Torsion Force

  8. Shearing Force

  9. Types of Forces • Flexion - bending • Tension - stretching • Compression - squeezing • Torsion - twisting • Shearing - cutting

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