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Atmospheric Layers
The thermosphere extends from an altitude of _______ to the base of _______ at _______.
The thermosphere typically extends from about 85 km altitude up to the base of the exosphere, which starts around 690 km. This matches option C, making it the correct answer.
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Atmosphere And Gravity
Atmosphere is held in place by?
The atmosphere is held in place by the gravity of the planetary body, which pulls the atmospheric gases toward the surface, preventing them from drifting into space.
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Asteroid Composition
Asteroids are made mostly of?
Asteroids are primarily composed of rock, metal, ice, and dust. While many asteroids are mainly rock and metal, some also contain significant amounts of ice and dust, especially those farther from the Sun. Therefore, option A is the most accurate and complete answer.
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Atmospheric Layers
The stratosphere is the atmospheric layer that absorbs most of the ________ that Earth receives from the Sun.
The stratosphere contains the ozone layer, which absorbs most of the Sun's harmful ultraviolet (UV) radiation, protecting life on Earth. Infrared radiation and radio waves are not primarily absorbed in the stratosphere, and the ozone layer is part of the stratosphere, not something it absorbs.
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Atmospheric Layers
_______ extends from the top of the troposphere to the bottom of the mesosphere.
The stratosphere is the atmospheric layer that extends from the top of the troposphere up to the bottom of the mesosphere. It lies above the troposphere and below the mesosphere, making option C correct.
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Earth's Atmosphere
The exosphere interacts with the _______ of Earth at roughly a distance of 10,000 km.
The exosphere is the outermost layer of Earth's atmosphere and interacts with the magnetosphere at altitudes around 10,000 km. The magnetosphere is the region dominated by Earth's magnetic field, which extends far into space and influences charged particles in the exosphere.
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Sedimentary Rocks
The color of a sedimentary rock is often mostly determined by __________.
The color of sedimentary rocks is primarily influenced by the presence of iron compounds, which can impart red, yellow, or brown hues. Zinc and calcium do not significantly affect the coloration of these rocks.
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Atmospheric Layers
___________ begins at 690 to 1,000 km from the surface and extends to roughly 10,000 km.
The exosphere begins at about 690 to 1,000 km above Earth's surface and extends outward to roughly 10,000 km, marking the outermost layer of the atmosphere where atmospheric particles can escape into space. The other options correspond to lower atmospheric layers at much lower altitudes.
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Atmospheric Layers
_______ is the atmospheric layer that absorbs most of the ultraviolet radiation that Earth receives from the Sun.
The stratosphere contains the ozone layer, which absorbs most of the Sun's harmful ultraviolet radiation, protecting life on Earth. Other layers like the troposphere, mesosphere, and ionosphere do not have this primary function.
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Atmospheric Layers
The troposphere extends from the planetary surface to the bottom of the ________.
The troposphere is the lowest layer of Earth's atmosphere and extends from the planetary surface up to the bottom of the stratosphere. This boundary is known as the tropopause.