1."These are two properties that exist for any type of traveling wave such as sound waves and water waves. It even includes the stand-up-and-sit-down waves that crowds at baseball stadiums are know to produce."
Which are two properties of waves?
a) wavelength and frequency
b) height and mass
c) energy and mass
d) temperature and wavelength
2. Among the different forms of light, radio, microwave, infrared, visible, ultraviolet, and xray the only difference is ____.
a) their speed of travel in a vacuum
b) whether or not they behave as a particle or a wave
c) the amount of energy they each carry
d) the size of the astronomical object that can produce it
3. Which of the following has no mass?
a) light
b) hydrogen
c) helium
d) the hottest stars
4. What is a "hertz"?
a) energy per second
b) meters per second
c) kilograms per meter
d) crests per second
5. Radio wavelength light
a) is longer than about one foot.
b) is about the size of an atomic nucleus.
c) is impossible to measure
6. Synchronous radiation originates from
a) cold clouds of dense gas
b) the surface of hot stars
c) hydrogen fusion reactions
d) electrons moving through a magnetic field
7 "About once every ten billion years the spin of a bound electron will flip so that it can be measured to spin in the opposite direction."What wavelength (what color) of light energy is released when this occurs?
a) 4000 miles, (which equals about 6400 kilometers)10 feet, (which equals about 3 meters)
b) 8.3 inches, (which equals about 21 centimeters)
c) 12 inches or more (12 inches equals about 30 centimeters)
8 Microwave wavelength radiation (microwave photons) is (are) produced and absorbed by which compound(s) in our atmosphere, making astronomical observation from the ground difficult in that portion of the spectrum?
a) iron oxide and diatomic hydrogen
b) water
c) carbon dioxide and sulfur compounds
9 Molecules, (atoms bound together by electrochemical forces) are formed in
a) the cores of stars, and the surfaces of planets.
b) regions of space that have no matter in them.
c) dense regions of matter.
d) the cores of stars, but nowhere on planets.
10 _____ light is produced by warm, disk material around a star, from which planets form.
a) infrared
b) gamma-ray
c) x-ray
d) ultraviolet