Astronomers often record solar images in the ____ part of the electromagnetic spectrum because the gaseous layers high in the Sun's atmosphere are very hot and emit most of their light at short wavelengths
a. microwave
b. gamma
c. visible light
d. ultraviolet
e. infrared
d
You might also like to view...
The shape of a magnetic field surrounding a current-carrying conductor is
A) consistent with the inverse-square law. B) radial. C) circular. D) all of these E) neither of these
When the rate of burn and the exhaust velocity are constant, a rocket ascends with
a. decreasing acceleration. b. decreasing velocity. c. constant velocity. d. constant acceleration. e. increasing acceleration.
What conclusion can be drawn from the fact that some planets and satellites with solid surfaces have impact craters?
A. The Sun went through several explosions, ejecting material that scarred the planets and satellites. B. The young planets had softer surfaces. C. Collisions between Solar System bodies and planetesimals were common at one time. D. Volcanoes were very active in the early stages of planet formation.
Trace fossils are
a. tracks only. b. borings only. c. burrows only. d. all of the above.