Eduqas A-Level Physics Nuclear and particle physics overview quiz quiz

Two down quarks and one up quark (udd)

Three up quarks (uuu)

One quark and one antiquark

Two up quarks and one down quark (uud)

A baryon

A lepton

A meson

A photon

Beta

Alpha

Gamma

X-rays

Predictable and dependent on temperature

Triggered by chemical reactions

Random and spontaneous

Steady and linear with time

$T_{1/2} = \lambda$

$T_{1/2} = \frac{\lambda}{\ln 2}$

$T_{1/2} = \lambda^2$

$T_{1/2} = \frac{\ln 2}{\lambda}$

$\frac{1}{8}$

$\frac{1}{3}$

$\frac{1}{6}$

$\frac{1}{9}$

$E = mc$

$E = mc^2$

$E = \frac{1}{2}mc^2$

$E = m^2c$

Hydrogen-1

Helium-4

Iron-56

Uranium-235

The fission products are always far less stable than the original heavy parent nucleus

Extra mass is created out of nothing during the fission process itself

The fission products end up lighter than a single proton each

The products lie closer to the iron-56 peak, with higher binding energy per nucleon

Two gamma photons travelling in opposite directions

A single high-energy gamma photon and nothing else at all

An alpha particle and a recoiling nucleus

A free neutron carrying away the energy

$I = I_0 \mu x$

$I = I_0 e^{-\mu x}$

$I = I_0 e^{\mu x}$

$I = \frac{I_0}{\mu x}$

Absorbed dose, the energy deposited per kilogram

Activity, the number of decays per second

Equivalent dose (weighted for biological harm)

Half-life, the time for activity to halve