Kramer, Astronomy, Chap. 28
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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| A telescope that uses a convex lens to bend light into focus | Refracting Telescope
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| A telescope that uses mirrors to bring light into focus | Reflecting Telescope
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| The process of linking separate telescopes together so that they act as one | Interferometry
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| The amount of sunlight that the Moon reflects | Albedo
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| Light, mountainous areas of the moon that are heavily covered with craters | Highland
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| Dark smooth plains which are lower in elevation on the Moon | Mare
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| Formed when objects from space crashed into the lunar surface | Impact Crater
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| Material that falls back to the lunar surface after being blasted out by the impact of a space object | Ejecta
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| A long trail of ejecta that radiates outward from a Moon crater | Ray
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| Valleylike structure that meanders across some regions of the Moon's maria | Rille
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| Layer of loose, ground-up rock on the lunar surface | Regolith
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| The plane in which Earth orbits about the Sun | Ecliptic
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| Occurs when the Sun is directly overhead at 25 degrees norht latitude, around June 21 and results in the maximum number of daylight hours for the northern hemisphere and the minimum number for the southern heisphere | Summer Solstice
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| Occurs when the Sun is directly overhead at 23.5 degrees south latitude, around December 21, and results in the minimum number of daylight hours for the northern hemisphere and the maximum number for the southern hemisphere | Winter Solstice
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| Occurs in the Fall, when the Sun is directly overhead at the equator and results in day and night of equal length for both northern and southern hemispheres | Autumnal Equinox
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| Occurs in the Spring, when the Sun is directly overhead at the equator and results in day and night of equal length for both northern and southern hemispheres | Vernal Equinox
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| The state at which the Moon's orbital and rotational periods are equal | Synchronous Rotation
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| The closest point in the Moon's orbit to Earth | Perigee
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| The farthest point in the Moon's orbit to Earth | Apogee
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| Occurs only during a full moon, when Earth passes between the Sun and the Moon, and Earth shadow falls on the Moon | Lunar Eclipse
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| NASA technology that has been passed to commercial industries for commmon use | Spinoff
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| Occurs when the Moon passes between Earth and the Sun and the Moon casts a shadow on Earth, blocking Earth's view of the Sun; can be partial or total | Solar Eclipse
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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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