Astronomy Quiz 1: Chapters 1-2 Flashcards
naturalism
a philosophical viewpoint according to which everything arises from natural properties and causes, and supernatural or spiritual explanations are excluded or dicounted
angular size
the angular size or diameter of an object refers to the size it appears to be. Angular size is normally defined as an angle in proportion to the object’s actual size divided by the distance from which it is observed.
fusion
a nuclear reaction in which the nuclei of atoms combine to form more massive nuclei which releases energy in the process
Virgo Cluster
the massive cluster of about 2,000 galaxies that lies in the constellation Virgo
redshift
the displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from the distant galaxies and celestial objects
general relativity
a theory of gravitation developed by Albert Einstein in which gravity is described as a geometrical curvature in space and time. One prediction of this theory is that gravitational fields slow the passage of time - a phenomenon that has been verified using atomic clocks
A correct worldview can help us draw ___ ___ about the evidence.
correct conclusion
The more distant aa galaxy is, the more its light is shifted toward the red; this is called the ___ ___.
Hubble law
The Bible provides a ___ ___ for the interpretation of scientific evidence in the field of astrophysics, as it does for others area of science.
logical foundation
The sun, like other ___, is a glowing hot ball of ___ ___.
stars; hydrogen gas
The sun derives energy from the fusion of hydrogen to ___ in the core.
helium
When a nebula is heated by ___ ___, it glows, often with vivid and beautiful colors.
nearby stars
When light is redshifted by motion is referred to as the ___ ___.
Doppler effect
God has created innumerable galaxies with a wide range of shapes and sizes. Clusters of galaxies are organized into even larger bodies called ___.
superclusters.
