Question

Which of these items provide evidence supporting the Big Bang theory? Select the two correct items.(1 point)
Responses

rate of star formation
rate of star formation

composition of matter in the universe
composition of matter in the universe

sizes and shapes of distant galaxies
sizes and shapes of distant galaxies

cosmic background radiation
cosmic background radiation

Answer 1

The two correct items that provide evidence supporting the Big Bang theory are:

1. **Composition of matter in the universe** - The predicted proportions of hydrogen, helium, and other light elements align with observations, supporting the Big Bang nucleosynthesis.

2. **Cosmic background radiation** - The discovery of the cosmic microwave background radiation is one of the strongest pieces of evidence for the Big Bang, as it represents the afterglow of the hot, dense state of the early universe.

So, the correct responses are:
- Composition of matter in the universe
- Cosmic background radiation