7K Forces and their effects Lesson Learning objective Before After 7K.1 About forces Identify forces as either pushes or pulls   Describe the effect of forces on an object Descrieb the effect of balanced forces on stationary objects State the unit used to measure force Name the instrument used to measure force Describe the effect of balanced forces on moving objects Explain how a newtonmeter works Explain why balanced forces have the effect they do on moving objects Calculate the effect of combined forces acting on an object 7K.2 Weight Describe what we mean by weight Describe how to measure weight Describe what we mean by gravity Explain why gravitation force is less on the Moon than on the Earth Describe what we mean by mass Compare the masses and the weights of different objects Explain why the force of a person's weight doesn't make them fall through the floor 7K.3 Friction Describe what we mean by friction Describe examples of where friction is useful in everyday life Describe examples of where friction is not helpful in everyday life Explain that friction always acts in the opposite direction to the movement Explain how friction can be reduced Describe drag as friction where things move through the air Describe examples of where drag is useful Describe how we can reduce drag Explain how the size of the friction force changes with the size of the applied force Explain how streamlining reduces drag 7K.4 Moving and stopping Describe how brakes use friction Describe how to calculate speed Describe factors that affect stopping distance Explain why its is important to have good treads on tyres Use different units for speed Use a distance-time graph to describe how objects are moving Draw distance-time graphs to depict journeys 7K.HSW Gravity Describe how Galileo used experiments to prove his ideas Describe how Galileo's ideas were prove correct on the Moon Explain how Newton used the idea of gravity to explain why things fall Explain why new scientific ideas aren't always of benefit to people Explain how later scientific evidence proved early ideas developed by Einstein Student Target Teacher Comment % Level Pretopic Pretest