physics

• what is a control variable

  something that you keep the same
• what is a dependent variable

  something you measure
• what is an Independent variable

  something you change
• what are the two types of transformers

  step up and step down transformers
• step up transformers - increases the potential difference and decrease the current
• step down transformers - decrease the potential difference and increase the current
• what is another way of saying potential difference

  p.d.
• what does the web of the national grid look like

  power station -> step up transformer -> national grid -> step down transformer -> consumer
• gpe = hight
• change in gravitational potential energy = mass x gravitational field strength x change in height
• give one environmental impact of using fossil fuels

  climate change
• P = I x V
• The higher resistance -> The lower the current
• series circuit - components are connected in one loop
• parallel circuit - components in multiple loops
• what is the current like in a series circuit

  the current stays the same through out each component
• what is the current like in a parallel circuit

  The current through the whole circuits the sum of all the currents through the separate components
• the lower the resistance -> higher the current
• what is the formulae for electrical power

  P = I x v
• power can be calculated by multiplying voltage and current
• F = M x A
• who do we remember the equation F = M x A?


  Fat = Mate x Alex