It is theorized that a pulsar only emits X-rays and visible light during its early history. What do you suppose is the basis of this theory?
A. As the pulsar's energy dissipates, the frequency of the energy it emits drops.
B. X-rays are likely the result of radioactive decay, which only can occur in a pulsar's early history.
C. The pulsar's high rate of spin produces a magnetic field that, over time, slows the pulsar down.
D. X-rays and visible light are both part of the electromagnetic spectrum.
Answer: A
You might also like to view...
Science and technology are
A) related to one another, but are not the same thing. B) responsible for all the good in the world. C) responsible for all the bad in the world. D) fundamentally different from each other.
True or False: Almost all natural rocks are consolidated aggregates of minerals
Indicate whether this statement is true or false.
What are two ways (one natural and one human-induced) in which the sediment budget of a coastline can become negative?
Instructions: Choose one answer from each pair of selections. In a radiation inversion, the air next to the ground is COLDER | WARMER than the air higher up