Physics A-Level
dark energy
What dark energy means in Physics A-Level, as defined for AQA.
Definition of dark energy
Check what you remember
Read the wording for your board, then hide it and explain dark energy in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A controversial component making up about 68% of the energy density of the Universe, to which accelerated expansion is attributed.
Topics that use dark energy
- Supernovae, neutron stars and black holes (A-level only) (AQA A-Level)
Related terms
- Accretion
- Active galactic nuclei
- Black hole
- Chandrasekhar limit
- Light curve
- Long-duration GRB
- Luminosity
- Neutron star
Using dark energy in the exam
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