AQA AS PHYSICS 7407/1 PAPER 1 2026 FINAL
REVIEW QUESTIONS ANSWERS BUNDLED
PRACTICE COLLECTION
◉ Electromagnetic Wave.
Answer: Electric and magnetic waves that progress though space
without the need for a substance.
◉ Electromotive Force (emf).
Answer: Amount of electrical energy per unit charge produced
inside a source of electrical energy.
◉ Electron Capture.
Answer: *Proton-rich nucleus* captures an *inner shell electron*
causing a *proton to change into a neutron*. *Electron neutrino
emitted* by nucleus. X-ray photon subsequently emitted by atom
when inner shell vacancy filled.
◉ Electron Volt.
Answer: Work done when an electron is moved through a pd of 1V.
◉ Energy Levels.
,Answer: Energy of an electron in an electron shell of an atom.
◉ Equilibrium.
Answer: State of an object when at rest or in uniform motion.
◉ Equipotential.
Answer: Line or surface in field along which the electric or
gravitational potential is constant.
◉ Escape Velocity.
Answer: Minimum velocity an object must be given to escape from a
planet when projected vertically from the surface.
◉ Excitation.
Answer: When an electron in an energy level gains energy to move
to a higher energy level.
◉ Standing Waves.
Answer: When a wave reflects upon itself and the reflected wave has
the same amplitude and same frequency/wavelength.
◉ Specific Latent Heat of Fusion.
,Answer: The energy needed to change a unit mass / 1 kg from a
*solid to a liquid* without a change in temperature.
Q = ml(fusion)
◉ Specific Latent Heat of Vaporisation.
Answer: The energy needed to change a unit mass / 1 kg from a
*liquid to a gas* without a change in temperature.
Q = ml(vaporisation)
◉ Work Function.
Answer: Minimum amount of energy needed by an electron to
escape from a metal surface
◉ Ionisation Energy.
Answer: The energy required to remove an electron from an atom.
◉ Alpha Decay.
Answer: A nuclear reaction in which an unstable nucleus *emits an
alpha particle* consisting of two protons and two neutrons. This
*decreases the atomic number by 2* and the *mass number by 4*.
◉ Alpha Radiation.
, Answer: Particles composed of 2 protons and 2 neutrons that has a
*range of a few centimetres in air*, is *absorbed by paper* and is the
*most ionising* radiation, more so than gamma and beta radiation.
◉ Beta-plus Decay.
Answer: When positrons are emitted by unstable proton-rich nuclei
along with a neutrino. This decreases the atomic number by 1.
◉ Beta-minus Decay.
Answer: When electrons are emitted by unstable neutron-rich nuclei
along with an anti-neutrino. This increases the atomic number by 1.
◉ Beta Radiation.
Answer: *High speed electrons* that have a *range in air up to a
metre*, are *absorbed by 5mm of aluminium* and is more ionising
that Gamma radiation.
◉ Gamma Radiation.
Answer: Electromagnetic radiation with *no mass or charge*
emitted by an unstable nucleus when it becomes more stable. Has a
*range of several kilometres*, and can be *mostly stopped by thick
lead*. It is the *least ionising* radiation.
◉ Atomic Mass Unit (u).
REVIEW QUESTIONS ANSWERS BUNDLED
PRACTICE COLLECTION
◉ Electromagnetic Wave.
Answer: Electric and magnetic waves that progress though space
without the need for a substance.
◉ Electromotive Force (emf).
Answer: Amount of electrical energy per unit charge produced
inside a source of electrical energy.
◉ Electron Capture.
Answer: *Proton-rich nucleus* captures an *inner shell electron*
causing a *proton to change into a neutron*. *Electron neutrino
emitted* by nucleus. X-ray photon subsequently emitted by atom
when inner shell vacancy filled.
◉ Electron Volt.
Answer: Work done when an electron is moved through a pd of 1V.
◉ Energy Levels.
,Answer: Energy of an electron in an electron shell of an atom.
◉ Equilibrium.
Answer: State of an object when at rest or in uniform motion.
◉ Equipotential.
Answer: Line or surface in field along which the electric or
gravitational potential is constant.
◉ Escape Velocity.
Answer: Minimum velocity an object must be given to escape from a
planet when projected vertically from the surface.
◉ Excitation.
Answer: When an electron in an energy level gains energy to move
to a higher energy level.
◉ Standing Waves.
Answer: When a wave reflects upon itself and the reflected wave has
the same amplitude and same frequency/wavelength.
◉ Specific Latent Heat of Fusion.
,Answer: The energy needed to change a unit mass / 1 kg from a
*solid to a liquid* without a change in temperature.
Q = ml(fusion)
◉ Specific Latent Heat of Vaporisation.
Answer: The energy needed to change a unit mass / 1 kg from a
*liquid to a gas* without a change in temperature.
Q = ml(vaporisation)
◉ Work Function.
Answer: Minimum amount of energy needed by an electron to
escape from a metal surface
◉ Ionisation Energy.
Answer: The energy required to remove an electron from an atom.
◉ Alpha Decay.
Answer: A nuclear reaction in which an unstable nucleus *emits an
alpha particle* consisting of two protons and two neutrons. This
*decreases the atomic number by 2* and the *mass number by 4*.
◉ Alpha Radiation.
, Answer: Particles composed of 2 protons and 2 neutrons that has a
*range of a few centimetres in air*, is *absorbed by paper* and is the
*most ionising* radiation, more so than gamma and beta radiation.
◉ Beta-plus Decay.
Answer: When positrons are emitted by unstable proton-rich nuclei
along with a neutrino. This decreases the atomic number by 1.
◉ Beta-minus Decay.
Answer: When electrons are emitted by unstable neutron-rich nuclei
along with an anti-neutrino. This increases the atomic number by 1.
◉ Beta Radiation.
Answer: *High speed electrons* that have a *range in air up to a
metre*, are *absorbed by 5mm of aluminium* and is more ionising
that Gamma radiation.
◉ Gamma Radiation.
Answer: Electromagnetic radiation with *no mass or charge*
emitted by an unstable nucleus when it becomes more stable. Has a
*range of several kilometres*, and can be *mostly stopped by thick
lead*. It is the *least ionising* radiation.
◉ Atomic Mass Unit (u).
