unit 10 Flashcards
(24 cards)
The most versatile piece of equipment for astrophotography is the
single-lens reflex camera
_____ hold together quark trios.
Gluons
The quality of a(n) _____ is determined by its focusing ability and its apparent field of view.
eyepiece
The universe is____ and the curvature is becoming less prominent.
expanding
_____ explained the photoelectric effect by supposing all light was composed of individual packets of energy called photons.
Albert Einstien
A statement that can be tested is a(n) ______.
hypothesis
____ is a distortion of space-time; thought to be the first fundamental force.
Gravity
Today, the_____ measures three degrees above absolute zero and is detected across the entire sky.
CMBR
______attempts to describe every function of our cosmos with one explanation.
Theory of everything
“Bits” of radiant energy describe____
photons.
_____ suggested that interactions between matter and radiation could best be understood by regarding ____ as systems of waves.
Louis de Broglie electrons
Producing an image free from optical distortion is called _____.
orthoscopic
_____ force is responsible for our universe being filled with matter.
Weak nuclear
Nothing can be said to be completely at ____ because perception of any____ is dependent on its observer.
rest motion
in the ______ there is no absolute motion, mass is a function of energy content, time is relative, and space and time are interdependent.
theory of relativity
_____ is inversely related to lens magnification.
Field of View
If a ____ occurs, dark energy will overcome all four fundamental forces and totally disintegrate our universe.
“big rip”
Einstein’s premise for general ____ was that the laws of nature are. the same for all systems, regardless of their state of motion.
relativity
______ increases when moving at a large percentage of light speed because it is resistant to change in motion.
Mass
The group of subatomic particles that contain quarks and electrons is called _____.
fermions
The needed subatomic particles to construct the universe, such as neutrons and protons is what?
Color
With the current view it is said that our universe will end in a(n) ____.
Big Chill
What event is known to form our existence when space expanded itself?
Big Bang
A well tested concept that explains a large number of proven hypothesis is an) ____.
theory
