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40 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is nebulae?
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Nebulae is huge clouds of dust and gas from which new stars born.
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What are three types of galaxies?
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- Spiral Galaxy
- Elliptical Galaxy - Irregular Galaxy |
Our sun is in the spiral-shaped Milky way galaxy
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Where are many stars are found in?
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In Multiple-star system
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True or False:
Every Distant galaxy show a red shift, indicating that the universe is expanding. |
True
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What do most astronomers agree?
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That the universe began with the big bang
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True or False:
Stars range in size from tiny neutron stars to huge super gaint stars. |
False
Stars range in size from huge super gaint stars to tiny neutron stars. |
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What determines by the star's color?
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Surface temperature.
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What are most stars are made of?
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Hydrogen and helium gases.
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True or false:
A star's brightness as observed from earth is its apparent magnitude. A star's true brightness is its abosolute magnitude. |
True
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True or False:
The hertzprung- Russell diagram shows the relationship between a star's absolute magnitude and it's temperature. |
True
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What are the layers of the sun?
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- Corona
- Chromosphere - photosphere - core |
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What is the main factor that affects the evolution of a star?
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Is it's starting mass
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What are binary stars?
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Two stars that revolve each other.
Binary - Two |
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What is constellation?
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Constellation is group of stars.
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What is nova?
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when one star in binary stars gives out gases to other and when the stars explode.
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What is nebulae?
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New stars are being born inside a brightly glowing cloud of dust and gas.
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What is an example of spiral galaxies?
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Milky Way
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What are spiral galaxies?
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galaxies that are shaped like spirals.
Milky way is an example of Spiral Galaxy. |
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What are elliptical galaxy?
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Galaxies that are shaped nearly spherical to a flat disk.
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What are irregular galaxies?
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Galaxies that don't have any certain kind of shapes.
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What is a spectroscope?
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A spectroscope can breaks up the visible light from a distant star into it's characteristics colors.
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What is a spectrum?
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When white light passes through a prism, a band of light called a spectrum is formed.
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What is red shift?
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The spectrum of a star moving away from the earth appears to be shifted slightly toward the red end.
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What is doppler effect?
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The apparent change in the wavelenghts of light that occurs when an object is moving toward or away from the earth is called doppler effect.
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What is big bang theory?
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The big bang theory may explain how the universe formed.
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What is gravity?
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The force of gravity began to affect the matter racing outward in every direction.
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What is quasar?
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-Gives of radio waves.
-Very high energy. |
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What is apparent magnitude?
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The brightness of a star depends on its size, its surface temperature, and its distance from earth.
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What is the life cycle of a high mass star?
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-Nebula
-Protostar -Main sequence -Gaint star -white dwarf -black dwarf |
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What is the life cycle of higher mass star?
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-Nebula
-Protostar -Main sequence -Supergiant star -Super nova -Neutron star -Black hole |
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What is absolute magnitude?
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The amount of light a star actually gives off is called absolute magnitude.
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What is parallax?
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Parallax refers to the apparent change in the position of a star in the sky.
Measuring distance. |
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What is nuclear fusion?
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Gravity pulls together the atoms of hydrogen gas in the core so tightly that they become fused together. This process is called nuclear fusion.
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What is the line through the center of the sun is called?
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Axis
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Name four stroms that occur in the sun?
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-Sunspot
-Solar winds -Solar flares -Prominence |
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What is the center of the sun?
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core
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What is the first layer of the sun?
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Corona
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What is the second layer of the sun?
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Chromosphere
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What is the third layer of the sun?
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Photosphere
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What is pulsar?
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Neutron stars that give off pulses of radio waves are called pulsars.
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