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Ch. 19 Stars
Stars, Galaxies and the Universe
| Question | Answer |
|---|---|
| The color of a star depends on its | temperature |
| What do the black lines in a star's absorption show? | some of the elements in a star |
| Why do black lines appear on an absorption spectrum? | black lines show where a stars atmosphere absorbs a color of light |
| What color of stars are the hottest? | blue |
| Apparent magnitude tells | how bright a star is from Earth |
| Absolute magnitude tells | how bright a star is REALLY |
| An apparent shift in the position of an object when viewed from two different places is | parallax |
| The distance light travels in a year is called a | light year |
| The band of color that appears when white light passes through a prism | spectrum |
| The H-R diagram shows the relationship of a star's surface temperature and its | absolute magnitude |
| What space object is formed from the materials in the core of a Supernova | black holes and neutron/pulsar stars |
| True or False: white dwarf, main sequence, red giant, is an accurate progression to a star cycle. | false |
| True or False: new stars form from the materials of old stars. | true |
| What is a small, hot dim star that is the leftover center from and old star? | White Dwarf |
| A gigantic explosion that causes the death of a large star is | Supernova |
| A star in which the electrons and protons become neutrons | Neutron star |
| A star that expands and cools once it runs out of Hydrogen | Red Giant |
| A spinning neutron star that emits rapid pulses of radio and optical energy | Pulsar star |
| A massive and dense object from which even light cannot escape | Black Hole |
| The Universe will continue to expand as seen by | redshift |
| The Milky Way is what kind of galaxy? | spiral |
| The Universe is about how old | 13.5 - 15 billion years |
| One of the largest components of space | galaxies |
| Measuring the distance from Earth to distant galaxies could help determine the age of what? | Universe |
| According to the Big Bang Theory the Universe is filled with | cosmic background radiation |
| The Universe is organized rigidly or loosely? | loosely |
| The brightness of stars from Earth is | Apparent Magnitude |
| Point of no return at a black hole is | Event Horizon |
| Within a star's core Hydrogen is fusing to create | Helium four |
| How much of the Universe may be made up of dark matter | ~70% |
| Most stars on the H-R Diagram are what kind of stars? | Main Sequence |
| What is a light year? | Distance light travels in one year |
| Strong radiation emitted near the event horizon of a black hole is a | Quazar |
| After the White Dwarf stage a star becomes a | Black Dwarf |
| What are the three types of galaxies? | Spiral, Elliptical and Irregular |
| What hangs out around the Halo's of Spiral galxies? | Globular Clusters |
| Redshift and Blueshift were discovered by | Hubble |
Created by:
Christine160
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