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!"FC_Astronomy_Quiz3
| Question | Answer |
|---|---|
| What is the main type of gas in the sun? | hydrogen gas |
| The Sun’s energy comes from the _______________ | nuclear fusion of hydrogen to helium |
| What are the main components (layers) of the Sun’s atmosphere? | the photosphere, the chromosphere, and the corona |
| List three active features of the Sun. | Sunspots, solar flares, and prominences |
| When do stars form? | Whenever dense clouds of interstellar gas and dust (called nebulae) exist and collapse |
| Stars have a ______________ lifetime and _____________ over time. | finite, evolve |
| What controls the evolution, legnth of its lifetime, and ultimate fate of a star? | The mass of a star |
| Why does a star change as it ages? | because its internal composition changes as nuclear fusion reactions in its core convert one element to another. |
| The __________ _____________ illustrates the relationship between the absolute magnitude and the surface temperature of stars. | H-R diagram |
| As stars ______________ , their position moves on the H-R diagram. | evolve |
| What are the three main characteristics used to classify stars? | size, temperature, and brightness |
| Red giants, blue giants, white dwarfs, and yellow dwarfs can be plotted on the H-R diagram according to their ______________ . | size and temperature |
| What do we call collections of billions of stars? | Galaxies |
| In which galaxy is our solar system located? | the Milky Way galaxy |
| What are the three basic types of galaxies? | spiral, elliptical, and irregular |
| What do we call the study of the origin and processes for formation of the universe? | Cosmology |
| What do we call our "best" current hypothesis for the origin of the solar system. | solar nebular theory |
| T/F Little of our information about our galaxy and the universe comes from ground-based observations. | False - Corrected Statement Much of our information about our galaxy and the universe comes from ground-based observations. |
| _____________ was the first manned landing on the Moon. | Apollo 11 |
| T/F Space technology impacts our everyday lives by spurring the development of weather forecasting, satellite communications, the search for alternative energy sources, and medical advances. | True Space technology impacts our everyday lives by spurring the development of weather forecasting, satellite communications, the search for alternative energy sources, and medical advances. |
| The ____________ Space Telescope provides views of the universe that cannot be made using ground-based telescopes or other satellites. | Hubble |
| The Milky Way is a ____________ galaxy. | spiral |
Created by:
tbfreema
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