Physics GCSE unit 1 higher tier

This is a word document covering physics unit 1 notes that you wil need to know for the exam. from electricity to electro-magnetic waves everything you have done in class is included with lots of bright colours and pictures for visual learners. The bullet point notes are easy to understand and clear.

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ELECTRICITY
Appliances
Appliances that heat up are more expensive because they use
More energy.
Power
Power tells us how QUICKLY an appliance TRANSFERS ENERGY.
It is measured in Watts or Kilowatts 1 kilowatt = 1000 watts.
The `kilowatt-hour' is also known as a UNIT.
Bill
To work out the total…

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Solar cells/panels - cheap to run - expensive to start up
- no CO or SO - unreliable
Tidal - cheap to run - disturb ships/water/habitats
- no CO or SO - unattractive
Hydroelectric - cheap to run - flood river valleys ­ destroying land,
- no CO or SO…

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Characteristics of image in a curved mirror:
Concave Convex
Bigger or smaller Smaller than object
Upside down or right way up Right way up
Could be real or virtual Virtual image

Uses of concave: dentist's tool and funhouse
Uses of convex: rear view mirror and funhouses

Light and reflection
Law…

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Heat warms particles giving them more energy so they vibrate more, the vibrations move along the
Metal in a domino like effect.




Seaside winds
During the day the cold air from above the sea moves in to take the place
Of the warm air over the land that has risen.…

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Payback time
Divide cost to install by saving per year

Specific heat capacity
The amount of heat required to warm 1kg of a substance by 1 degree.
Measured in units of j/kg degrees Celsius.
Equation:
Energy= specific heat capacity x mass x temperature change
= joules x kg x degrees…

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Evidence: there are many stars exploding now which form dust. This dust is similar to the dust planets are
made from.
How universe was created: all mater started off at a single point. There was a huge explosion (the big bang), the
universe started to expand rapidly, the stars started…

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