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Chapter 27 Vocab KW

Chapter 27 Vocab

QuestionAnswer
All types of electromagnetic radiation, arranged according to wavelength and frequency. Electromagnetic spectrum
Uses lenses to bring visible light to a focus. Refracting telescopes
Uses mirrors to bring visible light to a focus. Reflecting telescopes
A technique that uses the images from several telescopes to produce a single image. Interferometry
The percentage of incoming sunlight that its surface reflects. Albedo
Heavily cratered regions of the moon that are light in color and mountainous. Highlands
Dark, smooth plain, which average 3 km lower in elevation with few craters. Maria
Craters on the Moon that formed when objects from space crashed into the lunar surface. Impact craters
Material blasted out during the impacts that fell back to the Moon's surface. Ejecta
Craters that have long trails of ejecta. Rays
Meandering, valleylike structures that might be collapsed lava tubes. Rilles
A layer of loose, ground-up rock on the surface of the Moon. Regolith
The plane of Earth's orbit. Ecliptic plane
Occurs when the Sun is overhead at its farthest distance either north or south of the equator. Solstice
When Earth's axis is perpendicular to the Sun's rays and at noon the Sun is directly overhead at the equator. Equinox
The state at which the Moon's orbital and rotational periods are equal. Synchronous rotation
Occurs when the Moon passes directly between the Sun and Earth and blocks the Sun from view. Solar eclipse
The closest point in the Moon's orbit. Perigee
The farthest point in the Moon's orbit. Apogee
Occurs when the Moon passes through Earth's shadow. Lunar eclipse
Created by: Katelyn Whitlock
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