What this topic covers
Energy has 3 subtopics:
- Energy changes in a system, and the ways energy is stored before and after such changes
- Conservation and dissipation of energy
- National and global energy resources
GCSE AQA Foundation Physics · Topic 1 of 9
Choose a subtopic. Energy covers Energy changes in a system, and the ways energy is stored before and after such changes, Conservation and dissipation of energy, and National and global energy resources in GCSE AQA Foundation Physics. 12 lessons in 3 subtopics.
Revise Energy for GCSE AQA Foundation Physics, including Energy changes in a system, and the ways energy is stored before and after such changes.
12
Lessons
3
Subtopics
Energy has 3 subtopics:
12 lessons, grouped by subtopic.
Go back to the full GCSE AQA Foundation Physics topic list, or practise this topic with past-paper questions.
Energy covers Energy changes in a system, and the ways energy is stored before and after such changes, Conservation and dissipation of energy, and National and global energy resources in GCSE AQA Foundation Physics. 12 lessons in 3 subtopics.
The main energy stores at GCSE are kinetic, thermal, chemical, gravitational potential, elastic potential, magnetic, electrostatic and nuclear. The Energy Stores & Systems: Introduction notes cover this in full.
An energy store is where energy is held in an object or system, because energy is always stored somewhere. The Energy Stores & Systems: Introduction notes cover this in full.
The kinetic energy formula is Ek = ½mv², where m is mass in kg, v is speed in m/s and kinetic energy is in joules (J). The Kinetic Energy Calculations notes cover this in full.
The specific heat capacity equation is ΔE = mcΔθ, where ΔE is the change in thermal energy in joules, m is mass in kg, c is specific heat capacity in J/kg°C and Δθ is the temperature change in °C. The Specific Heat Capacity Explained notes cover this in full.
The power equations are P = E/t and P = W/t: power equals energy transferred, or work done, divided by time. The Calculating Power notes cover this in full.
The elastic potential energy formula is Ee = ½ke², where k is the spring constant in N/m, e is the extension in metres and energy is in joules (J). The Elastic Potential Energy Calculations notes cover this in full.
The specific heat capacity of water is 4200 J/kg°C, which is very high. The Specific Heat Capacity Explained notes cover this in full.
The gravitational potential energy formula is Ep = mgh, where m is mass in kg, g is gravitational field strength in N/kg and h is height in metres. The Gravitational Potential Energy Calculations notes cover this in full.