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Science 9; Last Test
Stars, Moon, Earth
| Question | Answer |
|---|---|
| Clusters of galaxies form larger groups called what? | Supergiants |
| The Doppler effect is also known as what? | Red shift |
| What does the red shift do? | Shows that galaxies in the universe are moving away from us |
| What are the common shapes used to classify galaxies? | Elliptical, spiral, and irregular |
| What unit is used to find the average distance between Earth and the Sun? | Astronomical unit |
| A light year is? | A unit of distance |
| Our solar system is inside the | Milky Way galaxy |
| Galaxies are classified based on their | shape |
| Our galaxy is classified as a | spiral galaxy |
| An observation of the red shift of galaxies suggests that the universe is | expanding |
| The big bang theory states that the universe began with a gigantic explosion | 10 to 20 billion years ago |
| The distance between stars is typically measured in | light years |
| The number of universes known to exist is | one |
| The big bang theory explains the | origin of the universe |
| What provides support for the big bang theory? | Cosmic microwave background radiation and red shift |
| Hotter stars glow with light that is more intense at | Shorter wavelengths |
| The life cycle of a star begins with a cloud of gas and dust called | Nebula |
| What are the planets in order starting at the sun | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune |
| Is Saturn an inner or outer planet? | Outer |
| What is an outer planet | Gas giants with rings |
| What radiates light energy, heat energy, and electromagnetic waves | Stars |
| What is an inner planet? | Terrestrial |
| Galaxies are classified based on what? | Shape |
| A spinning neutron star emitting radio waves is called? | Pulsar |
| What do all planets have besides Mercury and Venus | Moons |
| What 3 ways do astronomers use to classify stars | Age, color, size |
| Low mass and medium mass stars, including the sun, eventually end their lives how? | White dwarfs |
| The moon casts a shadow on Earth during a what? | Solar eclipse |
| The inward pull of gravity and outward push of thermal pressure allow the Sun to be | Stable over time |
| A star's apparent brightness is dependent upon | size, temperature, and distance from Earth |
| The surface temperature of a star can be estimated based on the star's | Color |
| Differences in both the Sun's and moon's gravitational pull on Earth result in | Ocean tides |
| A stream of electrically charged particles sent into space by the Sun is called | Solar wind |
| In stars, energy is released by fusion reactions and produced as hydrogen atoms combine to form | Helium atoms |
| In an H-R diagram, most stars are found in a diagonal band from the upper left to the lower right, which is called | Main sequence |
| What graphs a sample of stars according to surface temperature and absolute brightness? | H-R diagram |
| By using a spectograpgh, a star's absorption lines can identify the different ___ that a star is composed of | Elements |
| What forms supernovas during their death | Supergiant stars |
| The dense remnant of a high mass star that has already gone supernova is called | Neutron star |
| What determines the phases of the moon? | Earth, Sun, and moon |
| What will happen to the relative amounts of hydrogen and helium in the sun over the next few billion years | Hydrogen will decrease and Helium will increase |
Created by:
ShayleeFausz
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