BellaireSCI8 Astronomy CH3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Constellation | patterns of stars in the sky
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| Visible light | the light you see with your eyes
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| Electromagnetism radiation | energy that can travel directly through space in the form of waves
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| Wavelength | the distance between the crest of one wave and the crest of the next wave
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| Spectrum | made up of the colors red, orange, yellow, green, blue, and violet
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| Different waves the electromagnetic spectrum includes are… | infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays
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| Refracting telescope | uses convex lenses to gather a large amount of light and focus it onto a small area
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| Convex lens | a piece of transparent glass, curved so that the middle is thicker than the edges
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| Reflecting telescope | Isaac Newton, a telescope that uses one or more mirrors to gather light; the mirror focuses a large amount of light onto a small area
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| Radio telescopes | a device used to detect radio waves from objects in space; they have curved reflecting surfaces
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| Observatory | a building that contains one or more telescopes most located on top of mountains or large hills
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| Spectrograph | breaks the light from an object into colors and photographs the resulting spectrum
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| Galaxy | the Milky Way is our galaxy, a giant flat surface that contains hundreds of billions of stars
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| Universe | billions of galaxies, astronomers define it as all space and everything in it
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| Light-year | is the distance that light travels in one year or about 9.5 million million kilometer
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| Medium sized star | our sun
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| Giant star | very large stars , much larger than the sun
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| Apparent magnitude | is a star’s brightness as seen from Earth, it can be measured fairly easily using electronic devices
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| Absolute magnitude | the brightness the star would have if it were at a standard distance from Earth, much more complicated to find a star’s absolute magnitude
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| Hertzsprung-Russel diagram | H-R diagram shows the relationship between surface temperature and brightness
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| Main sequence | a diagonal line in the H_R diagram that shows the sequence of surface temperature increase and brightness increases; 90% of the stars are main sequence stars
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| Pulsars | a neutron star that produces radio waves
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| Nebula | a large amount of gas and dust in space, spread out in an immense volume
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| Protostar | in Greek Proto means “earliest”; is the earliest stage of a star’s life
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| White draft | the remaining hot core of a star after its outer layers have expanded and drifted out into space
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| Supernova | the explosion of a dying giant or supergiant star
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| Neutron stars | a tiny star that remain after a supernova explosion
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| Black Holes | the initial explosion that resulted in the formation and expansion of the universe
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| Quasars | a distant galaxy with black hole at its center
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| Binary stars | a star system that contains two stars
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| Eclipsing binary | a star system in which one star periodically blocks the light from another
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| Spiral galaxy | a galaxy that has the shape of twin spirals
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| Elliptical galaxies | galaxies that look like flattened balls; these galaxies contain billion of stars but have little gas and dust between the stars
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| Irregular galaxies | galaxies that do not have regular shapes; the Large Magellanic Cloud is an irregular galaxy
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| Big Bang | the initial explosion that resulted in the formation and expansion of the universe
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
kdewey
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