The study of 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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| Electromagnetic Radiation | Energy that has the ability to travel through space in waves.
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| Wavelength | The distance between one wave's crest and the wave's crest right next to it.
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| Visible Light | The light we can see.
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| Telescopes | Scientific tools that gather and focus light and other forms of electromagnetic radiation.
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| Spectrum | A range of different colors that have different wavelengths.
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| Optical Telescope | A telescope that use mirrors or lenses to gather and focus visible light.
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| Universe | All of space and everything inside of it.
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| Refracting Telescope | A telescope that uses convex lenses to gather and focus light.
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| Reflecting Telescope | A telescope that uses a curved mirror to gather and focus light,
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| Radio Telescope | A telescope that can detect radio waves.
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| Parallax | The apparent movement of an object when seen from different places.
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| Light-Year | The distance light can travel in 1 year.
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| Spectrograph | A device that breaks light into colors and produces an image of the resulting spectrum.
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| Apparent Brightness | How bright a star seems in the night sky.
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| Absolute Brightness | How bright a star would actually look if compared with other stars in a standard distance from Earth.
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| H-R Diagram | A graph that categorizes stars using the absolute brightness, surface temperature, and color of a star.
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| Main sequence | A diagonal area on the H-R diagram that includes more than 90% of all the stars.
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| Nebula | A large cloud of gas and dust spread out over a big area.
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| Protostar | A contracting cloud of gas and dust that has enough mass and gravity to make a star.
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| White Dwarf | The blue-white core left from a red giant.
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| Supernova | The explosion that happens when a super- giant star runs out of fuel.
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| Neutron Star | The remains of a super-giant star's supernova.
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| Pulsar | Spinning neutron stars.
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| Black Hole | An object that has gravity so strong that nothing in the universe can escape it's gravitational pull once it gets past a certain point.
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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:
jericho353
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