The Big Bang theory describes how the universe began.
Table 1 gives some observations about the universe. Complete table 1 by placing ticks (✓ ) to show which observations give direct evidence for the Big Bang theory. Gives direct evidence Observation for the Big Bang theory a black hole is at the centre of almost every galaxy cosmic microwave background radiation (CMBR) is detected in all directions the light from distant galaxies shows a red-shift high-mass stars become supernovae after the red supergiant stage in their evolution nuclear fusion takes place in the cores of stars Table 1
Table 2 gives some physical quantities. Complete table 2 by placing a tick (✓ ) in each row to show whether the measured value of each quantity has decreased, stayed the same or increased since the Big Bang. Measured value Physical quantity stayed the decreased increased same mean temperature of the universe size of the universe total energy in the universe Table 2
