What this topic covers
Topic P8: Global challenges has 3 subtopics:
- P8.1 Physics on the move
- P8.2 Powering Earth
- P8.3 Beyond Earth
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GCSE OCR Higher Physics · Topic 8 of 9
Topic P8: Global challenges – GCSE OCR Higher Physics revision notes
Choose a subtopic. OCR Global challenges: physics on the move, powering Earth and beyond Earth. 40 lessons in 3 subtopics.
Revise Topic P8: Global challenges for GCSE OCR Higher Physics, including P8.1 Physics on the move and P8.2 Powering Earth. 40 lessons across 3 subtopics.
40
Lessons
3
Subtopics
Topic P8: Global challenges lessons by subtopic
40 lessons, grouped by subtopic.
P8.1 Physics on the move
- Distance, Displacement and Speed (Part 1/3)
- Distance, Displacement and Speed (Part 2/3)
- Distance, Displacement and Speed (Part 3/3)
- Velocity, Distance-Time Graphs and Speed
- Acceleration, Velocity-Time Graphs and Terminal Velocity (Part 1/3)
- Acceleration, Velocity-Time Graphs and Terminal Velocity (Part 2/3)
- Acceleration, Velocity-Time Graphs and Terminal Velocity (Part 3/3)
- Thinking Distance
- Braking Distance
- Understanding Momentum
- Introduction to Momentum Conservation
- Momentum Calculations
- Force, Momentum and Acceleration
- Momentum and Safety Features
P8.2 Powering Earth
- Energy Resources: An Overview
- Environmental Impact & Reliability
- National Grid Introduction
- Transformers and Efficiency in the National Grid
- AC vs DC Potential Difference
- Mains Electricity: Dangers and Precautions
- Three-Core Cables and Wire Identification
- AC and DC Generators
- Interpreting Generator Graphs
- Introduction to Transformers
- Voltage and Turns Ratio in Transformers
- Transformer Efficiency and Power
P8.3 Beyond Earth
- Formation of the Solar System
- Components of Our Solar System
- Star Size and Life Cycle
- Fusion, Supernova and Element Creation
- Circular Orbits and Gravity
- Planets, Moons, and Satellites
- Red-Shift and the Expanding Universe
- The Big Bang: Evidence and Expansion
- Infrared Radiation: Emission and Absorption
- Emission and Absorption
- Earth's Temperature and Radiation Balance
- Ultrasound and Echo Sounding
- Seismic Waves and Earth's Structure
- Wave Properties for Detection and Exploration
More in this course
Go back to the full GCSE OCR Higher Physics topic list, or practise this topic with past-paper questions.
Frequently asked questions
What is Topic P8: Global challenges?
OCR Global challenges: physics on the move, powering Earth and beyond Earth. 40 lessons in 3 subtopics.
What is the order of the planets from the Sun?
The eight planets in order of distance from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The Components of Our Solar System notes cover this in full.
How do you calculate distance from speed and time?
Distance is calculated with s = vt, distance = speed × time. The Distance, Displacement and Speed (Part 2/3) notes cover this in full.
How many moons does Jupiter have?
Jupiter has over 80 moons, including four large ones discovered by Galileo in 1610, and Saturn has more than 80 too. The Components of Our Solar System notes cover this in full.
What is the typical speed of walking, running and cycling?
Typical speeds are about 1.5 m/s for walking, 3 m/s for running and 6 m/s for cycling. The Distance, Displacement and Speed (Part 1/3) notes cover this in full.
How far away is the Moon?
The Moon orbits about 384,000 km from Earth and takes a whole month to complete one orbit. The Planets, Moons, and Satellites notes cover this in full.
How old is the universe?
The Big Bang theory says the universe began from an extremely hot, dense point about 13.8 billion years ago and has been expanding ever since. The The Big Bang: Evidence and Expansion notes cover this in full.
How old is the Sun?
The Sun has been converting hydrogen into helium in its core for about 4.6 billion years, and it will continue for another 5 billion years or so. The Star Size and Life Cycle notes cover this in full.
What is a black hole?
A black hole is an object with gravity so strong that even light cannot escape. The Star Size and Life Cycle notes cover this in full.