Ch 3 The Solar System Key Terms

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DefinitionTerm
Type of system where Earth is at the center of the revolving planets and stars
The solid inner core of a comet
The largest and most massive planet
A chunk of rock or dust in space
Phobos and Deimos are the two moons of this planet
Region of the sun's atmosphere that we see as a reddish glow
Planet that was discovered by observing that Uranus was not following the orbit predicted for it
Fifth planet from the sun
Seventh planet from the sun
Region of the solar system between the orbits of Jupiter and Mars where most asteriods are found
Second largest planet in our solar system
Smallest terrestrial planet
Only planet in our solar system with liquid water on its surface
Trapping of heat by the atmosphere
Process in which hydrogen atoms join together to form helium, producing energy
Third planet from the sun
Probes have had difficulty landing on this planet because the pressure of its atmosphere would crush them.
Innermost region of the sun's interior
Fuzzy outer layer of a comet
Kepler found that the shape of the orbit of each planet is a(n)
The planet in our solar system that we are looking for life on
DefinitionTerm
The corona gradually thins into streams of electrically charged particles called _____.
Part of the sun's interior where loops of gas move energy toward the sun's surface
Type of system where Earth and the other planets revolve around the sun
Loose collection of ice, dust, and small rocky particles whose orbit is usually a very long, narrow ellipse
The four outer planets are often called these
A meteoroid that enters Earth's atmosphere and produces a streak of light in the sky
Outermost region of the sun's atmosphere
The dwarf planet in our solar system
Copernicus supported this type of system
Ptolemy supported this type of system
Tycho Brahe supported this type of system
A spherical region of comets that surrounds our solar system
Huge reddish loops of gas that often link different parts of sunspot regions
Second planet from the sun
Scientist who discovered four moons revolving around Jupiter and the phases of Venus to support the heliocentric system
Middle region of the sun's interior
Sixth planet from the sun
Part of a comet that is made up of the nucleus and coma
Region of the sun's atmosphere that looks like a white halo or crown
Middle region of the sun's atmosphere
True or false: Scientists think that a large amount of liquid water flowed on Mars's surface in the distant past.
DefinitionTerm
Planet that is closest to the sun
Eruptions that occur when loops in sunspot regions suddenly connect, releasing large amounts of magnetic energy
A doughnut-shaped region where most comets are found
Region of the sun's atmosphere that gives off visible light
Fourth planet from the sun
Called the 'red planet'
Rocky objects revolving around the sun that are too small and numerous to be considered planets
Does Mercury have an atmosphere?
True or false: All of the outer planets have many moons.
Planet that appears to rotate from top to bottom instead of from side to side
Kepler supported this type of system
Outermost region of the sun's interior
Innermost region of the sun's atmosphere
Part of the sun's interior that produces huge amounts of energy
Another name for the favorable conditions on Earth
Planet that the Great Red Spot is located on
Planet with the hottest surface temperature
Meteoroids that pass through the atmosphere and hit Earth's surface
Eighth planet from the sun
This occurs when the solar wind enters Earth's atmosphere near the poles
Dark areas of gas on the sun's surface that are cooler than the gases around them.

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