Lesson 1 Telescopes
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 | the energy transferred through space by electromagnetic waves
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| visible light | electromagnetic radiation that can be seen with the unaided eye
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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 | the range of wavelengths of electromagnetic waves
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| telescope | a n optical instrument that forms enlarged images of distant objects
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| optical telescope | a telescope that uses lenses or mirrors to collect and focus visible light
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| refracting telescope | a telescope that uses a curved mirror to collect and focus light
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| convex lens | a lens that is thinker in the center than at the edges
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| reflecting telescope | a telescope that uses a curved mirror to collect and focus light
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| observatory | a building that contains one or more telescopes
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| radio telescope | a device used to detect radio waves from objects in space
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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:
dguilliams
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