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Physics
OCR GCSE Physics A
Global challenges
OCR GCSE Physics A · J249 · Topic P8
Global challenges
Paper 2 (Foundation)
or
Paper 4 (Higher)
· 28 notes
P8.1
Physics on the move
P8.1a
Typical speeds
P8.1b
Estimating accelerations
P8.1c
Calculations and unit conversion
P8.1d
Reaction times
P8.1e
Stopping distance factors
P8.1f
Stopping distance variation
P8.1g
Large decelerations
P8.1h
Force estimation
P8.1i
Speed, acceleration and force estimation
P8.2
Powering Earth
P8.2a
Energy sources
P8.2b
Patterns in energy use
P8.2c
National Grid
P8.2d
Transformers in National Grid
P8.2e
Grid efficiency
P8.2f
High voltage transmission
P8.2g
Domestic supply
P8.2h
AC vs DC
P8.2i
Mains wires
P8.2j
Electrical safety
P8.3
Beyond Earth
P8.3a
Red-shift
P8.3b
Big-Bang evidence
P8.3c
Lifecycle of a star
P8.3d
Radiation emission
P8.3e
Solar system
P8.3f
Circular orbits and gravity
P8.3g
Stable orbits
P8.3h
Earth's temperature balance
P8.3i
Wave detection of hidden structures
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