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!"FC_Astronomy_Quiz3

QuestionAnswer
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 on 2012-11-18



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