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 the figure, the transition from radiation-dominated to matter-dominated occurred at a redshift of approximately 3,000, which corresponds to a temperature of about 10,000 K. The closest option to this temperature is "tens of thousands" provided in choice C.

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