The composition of Earth's atmosphere has not changed since its formation.
Answer the following statement true (T) or false (F)
False
You might also like to view...
The following graph shows multiple transit events recorded while observing a star. The colored arrows indicate transits caused by three different planets. Rank the orbital periods of these planets, from shortest to longest.
What will be an ideal response?
Wrought iron is
(a) Heated and then rapidly quenched into water (b) Packed in carbon to harden the iron (c) Heated in carbon monoxide (d) Deformed into shape
Quantum issues often constrain transitions in quantum harmonic oscillators to those where ?n = 1. Consider a spectrum chart (like the one shown in figure Q11.2) for such a system. What would this chart look like?
A. There would be only one emission line.
B. The emission lines would be evenly spaced in energy.
C. The emission lines would become more closely spaced (in energy) as we go to the right.
D. The emission lines would become farther apart (in energy) as we go to the right.
Which of the following physical parameters is NOT under the control of a radio telescope?
A) the direction pointed on the sky B) the bandwidth C) the time of observation D) the band