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Earth Space Science
Terms in this set (27)
A device that brings visible light to a focus with mirrors.
The portion of sunlight reflected by the surface of an astronomical body.
The blocking of the disk of the sun by the moon.
Closest point to earth in the moon's orbit
Process of linking seperate radio telescopes to act as one.
Technology developed in the space program that now has common commercial uses.
Farthest point from earth in the moon's orbit
Earth's position around June 21, at which the northern hemisphere has its maximum daylight hours.
Moon's state, in which its rotational period and its orbital period are equal.
Earth's position when the lengths of the day and night are equal.
Material blasted out during impacts that falls back to the moon's surface.
Earth's position near or on December 21, at which the northern hemisphere has its minimum daylight hours.
Plane of earth's orbit about the sun.
Loose, ground-up rock on the moon's surface.
A dark, smooth plain on the surface of the moon.
The arrangement of waves that includes gamma rays, X-rays, ultra-violet radiation, visible light, infrared radiation, microwaves, and radio waves according to wavelength and frequency is called the (electromagnetic spectrum, electromagnetic radiation).
The telescope that uses lenses to bring visible light to a focus is a (reflecting, refracting) telescope.
Above the atmosphere
Telescope are placed (on a mountaintop, above the atmosphere) in order to most effectively collect infrared and ultraviolet radiation, X-rays, and gamma rays.
The space exploration program that landed astronauts on the moon was (mercury, apollo)
The moon's surface is very different from the surface or Earth because the moon has no (erosion, valleys).
(Ejecta, Albedo) is the material blasted out of the moon's surface as a result of space-object impact.
The theory that suggests the moon formed as a result of a collision between Earth and a Mars-sized object is called the (plate tectonics, impact) theory.
The daily rising and setting of celestial objects like the sun is caused by the (orbit, rotation) of earth.
One reason different seasons occur on Earth is because earth's (axis, orbit0 is titled 23.5` relative to the ecliptic.
When the moon waxes during its lunar cycle, the amount of its sunlight portion that we see appears to (increase, decrease) in size.
A (solar eclipse, lunar eclipse) occurs when earth passes between the sun and moon.
A lunar eclipse can only occur during the phase of the (new moon, full moon).
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