Chapter 33, Problem 16Q

To determine

The time of the Earth’s age and modern human lives on it, from the given figure.

Answer to Problem 16Q

Solution:

The Earth was formed towards the latter half of the universe’s transparent era when the stars and galaxies were being formed. Modern humans appeared during the last section, shown in the figure close to the right end.

Explanation of Solution

Given:

Compressed graphical representation of the development of the universe after the Big Bang, according to modern cosmology.

The Big Bang model describes how the universe expands with time, at very high temperature and density. It also gives an explanation for the cosmic microwave background, large scale structure and abundance of light.