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24 Cards in this Set
- Front
- Back
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photosphere |
visible surface of the sun |
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radiative zone |
region between the sun’s core and convective zone, where energy moves by radiation |
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convective zone |
region between the sun’s radiative zone and photosphere, where energy is carried upward by convection |
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chromosphere |
thin layer of the sun above the photosphere |
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aurora |
colored light resulting from the interaction of solar wind and Earth’s magnetosphere |
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solar flare |
an explosive release of energy that comes from the sun |
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prominence |
a loop of incandescent gas that extends above the photosphere |
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sunspots |
dark area of the photosphere of the sun; has a strong magnetic field |
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nuclear fusion |
energy-releasing process in which nuclei of small atoms combine to form more-massive nuclei |
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corona |
outermost layer of the sun’s atmosphere |
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barycenter |
the balance point of the Earth-moon system |
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perigee |
the point at which a satellite is nearest to Earth in its orbit around Earth |
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apogee |
the point at which a satellite is farthest from Earth in its orbit around Earth |
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solar eclipse |
an event in which the moon’s shadow falls on Earth when the moon passes between Earth and the sun |
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lunar eclipse |
the passing of the moon through Earth’s shadow at full moon |
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crater |
a bowl-shaped depression that forms on the surface of an object when a falling body object strikes it |
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mare |
a large, dark area of lunar basalt |
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regolith |
layer of crushed rock and dust on the moon’s surface |
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anorthosite |
a rock composing the light, rough highland areas of the moon’s surface |
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protoplanet |
a large body made up of smaller bodies that joined together through collisions and gravity |
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planetesimal |
a small body from which a planet originated in the early stages of the solar system |
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solar nebula |
a rotating cloud of gas and dust from which Earth’s solar system formed |
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gas giant |
a type of planet with a deep, massive atmosphere made mostly of gas; denser than an inner planet |
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terrestrial planet |
a planet that is made of solid rock and has impact craters and a metallic core; another name for inner planet |
