AST 2002- EXAM 2 Latest Questions
with Guaranteed Pass Solutions.
Ultraviolet Light - Answer Light with wavelengths that fall in the portion of the
electromagnetic spectrum between visible light and X rays.
Inverse Square Law - Answer A law followed by an quantity that decreases with the square
of the distance between two objects
Conservation of Angular Momentum - Answer (Law of) the principle that, in the absence of
net torque (twisting force), the total angular momentum of a system remains constant.
Transmission - Answer (of light) The process in which light passes through matter without
being absorbed.
Oort Cloud - Answer A huge, spherical region centered on the Sun, extending perhaps
halfway to the nearest stars, in which trillions of comets orbit the Sun with random inclinations,
orbital directions, and eccentricities.
Kelvin - Answer The most commonly used temperature scale in science, defined such that
absolute zero is 0 K and water freezes at 273.15 K.
Solar nebula - Answer The piece of interstellar cloud from which our own solar system
formed
Doppler effect (shift) - Answer The effect that shifts the wavelengths of spectral features in
objects that are moving towards or away from the observer
Angular Resolution - Answer (of a telescope) The smallest angular separation that two point
like objects can have and still be seen as distinct points of light (rather than as a single point of
light).
Microwaves - Answer Light with wavelengths in the range of micrometers to millimeters.
Generally considered to be a subset of the radio wave portion of the electromagnetic spectrum.
Interferometry - Answer A telescopic technique in which two or more telescopes are used in
tandem to produce much better angular resolution than the telescopes could achieve
individually.
, Weight - Answer The net force that an object applies to its surroundings; in the case of a
stationary body on the surface of Earth, it equals mass x acceleration of gravity.
Newton's laws of motion - Answer Three basic laws that describe how objects respond to
focus.
Nucleus of a comet - Answer The solid portion of a comet
The only portion that exists when the comet is far from the Sun
Fahrenheit - Answer Temperature where water freezes at 32 and boils at 212.
Velocity - Answer The combination of speed and direction of motion; it can be stated as a
speed in a particular direction, such as 100 km/hr due north.
Element (chemical) - Answer A substance made from individual atoms of a particular atomic
number.
Asteroid belt - Answer The region of our solar system between the orbits of Mars and Jupiter
in which asteroids are heavily concentrated.
Metals (in solar system theory) - Answer Elements, such as nickel, iron, and aluminum, that
condense at fairly high temperatures.
Adaptive Optics - Answer A technique in which telescope mirrors flex rapidly to compensate
for the bending of starlight caused by atmospheric turbulence.
Electromagnetic Spectrum - Answer The complete spectrum of light, including radio waves,
infrared light, visible light, ultraviolet light, X rays, and gamma rays.
Blueshift - Answer A Doppler shift in which spectral features are shifted to shorter
wavelengths, observed when an object is moving toward the observer.
Potential energy - Answer Energy stored for later conversion into kinetic energy
Include gravitational, electrical, and chemical.
with Guaranteed Pass Solutions.
Ultraviolet Light - Answer Light with wavelengths that fall in the portion of the
electromagnetic spectrum between visible light and X rays.
Inverse Square Law - Answer A law followed by an quantity that decreases with the square
of the distance between two objects
Conservation of Angular Momentum - Answer (Law of) the principle that, in the absence of
net torque (twisting force), the total angular momentum of a system remains constant.
Transmission - Answer (of light) The process in which light passes through matter without
being absorbed.
Oort Cloud - Answer A huge, spherical region centered on the Sun, extending perhaps
halfway to the nearest stars, in which trillions of comets orbit the Sun with random inclinations,
orbital directions, and eccentricities.
Kelvin - Answer The most commonly used temperature scale in science, defined such that
absolute zero is 0 K and water freezes at 273.15 K.
Solar nebula - Answer The piece of interstellar cloud from which our own solar system
formed
Doppler effect (shift) - Answer The effect that shifts the wavelengths of spectral features in
objects that are moving towards or away from the observer
Angular Resolution - Answer (of a telescope) The smallest angular separation that two point
like objects can have and still be seen as distinct points of light (rather than as a single point of
light).
Microwaves - Answer Light with wavelengths in the range of micrometers to millimeters.
Generally considered to be a subset of the radio wave portion of the electromagnetic spectrum.
Interferometry - Answer A telescopic technique in which two or more telescopes are used in
tandem to produce much better angular resolution than the telescopes could achieve
individually.
, Weight - Answer The net force that an object applies to its surroundings; in the case of a
stationary body on the surface of Earth, it equals mass x acceleration of gravity.
Newton's laws of motion - Answer Three basic laws that describe how objects respond to
focus.
Nucleus of a comet - Answer The solid portion of a comet
The only portion that exists when the comet is far from the Sun
Fahrenheit - Answer Temperature where water freezes at 32 and boils at 212.
Velocity - Answer The combination of speed and direction of motion; it can be stated as a
speed in a particular direction, such as 100 km/hr due north.
Element (chemical) - Answer A substance made from individual atoms of a particular atomic
number.
Asteroid belt - Answer The region of our solar system between the orbits of Mars and Jupiter
in which asteroids are heavily concentrated.
Metals (in solar system theory) - Answer Elements, such as nickel, iron, and aluminum, that
condense at fairly high temperatures.
Adaptive Optics - Answer A technique in which telescope mirrors flex rapidly to compensate
for the bending of starlight caused by atmospheric turbulence.
Electromagnetic Spectrum - Answer The complete spectrum of light, including radio waves,
infrared light, visible light, ultraviolet light, X rays, and gamma rays.
Blueshift - Answer A Doppler shift in which spectral features are shifted to shorter
wavelengths, observed when an object is moving toward the observer.
Potential energy - Answer Energy stored for later conversion into kinetic energy
Include gravitational, electrical, and chemical.
