Figure 17-1
The change from a radiation-dominated to a matter-dominated Universe occurred at a temperature closest to ____ of degrees kelvin. (Refer to Figure 17-1.)

Question

Figure 17-1
The change from a radiation-dominated to a matter-dominated Universe occurred at a temperature closest to ____ of degrees kelvin.   (Refer to Figure 17-1.)

Quizplus · Accepted Answer

According to Figure 17-1, the transition from radiation domination to matter domination occurred at a redshift of approximately 3500, which corresponds to a temperature of around 3000 K. This is closest to tens of thousands of degrees Kelvin, as indicated by choice C.

Figure 17-1 The Change from a Radiation-Dominated to a Matter-Dominated Universe Occurred