14.Interactions through the application of forces
state that forces can
- change the state of rest or motion of a body
- change the size and/or shape of a body
- bring about turning effects in objects (e.g. levers)
- exert pressure on objects
identify some examples of contact forces (e.g. frictional force) and non-contact forces (e.g. gravitational force and magnetic force) and predict their effects on an object (e.g. how tides are caused by gravitational interaction between the oceans and the moon)
relate pressure to force and area, using appropriate everyday examples (e.g. high heel shoes, cutting edge of a knife)
*show an appreciation of some daily life phenomena associated with atmospheric pressure (e.g. use of suction cups, drinking from straws) and pressure due to liquid (e.g. submarines have depth limits)