The Universe
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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| Absolute Magnitude | a measure of how bright a star would be if it were seen from a standard distance
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| Apparent Magnitude | the brightness of a star as seen from Earth
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| Big Bang Theory | the theory that all matter and energy in the universe was compressed into a extremely small volume that 13 billion to 15 billion years ago exploded and began expanding in all directions
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| Cosmic Microwave Background | the electromagnetic radiation leftover from the formation of the universe
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| Electromagnetic Spectrum | all of the frequencies or wavelengths of electromagnetic radiation
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| Galaxy | a collection of stars, dust and gas bound together by gravity
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| H-R Diagram | Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and absolute magnitude
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| Light-year | the distance light travels in one year; about 9.46 trillion kilometers
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| Luminosity | the actual brightness of an object such as a star
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| Main Sequence | the location on the H-R diagram where most stars lie; it has a diagonal pattern from the lower right (low temperature and luminosity) to the upper left (high temperature and luminosity)
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| Nebula | a large cloud of gas and dust in interstellar space; a region in space where stars are born
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| Neutron Star | a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons
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| Planet | a relatively large spherical body that orbits a star
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| Redshift | a shift toward the red end of the spectrum; occurs in the spectrum of an object when the object is moving away from the observer
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| Solar System | the sun and all of the planets and other bodies that travel around it
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| Star | a large celestial body that is composed of gas and that emits light; the sun is a typical star
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| Supernova | a gigantic explosion in which a massive star collapses and throws its outer layers into space
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| Universe | space and all the matter and energy in it
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| Wavelength | the distance from any point on a wave to the corresponding point on the next wave
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| White Dwarf | a small, hot, dim star that is the leftover center of an old sun-like star
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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.
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.
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:
Mrs_Gore
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