D4C14C15C16

domain-iv-earth-and-space-science

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D4C14 Seismic wave data indicates that Earth's inner core is solid and its outer core is liquid. What accounts for this difference?

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Explanation

The inner core is hotter than the outer core but is under great pressure. Because the melting point of iron, the main component of the core, increases with increasing pressure, the inner core is solid.

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D4C14 This US Geological Survey map shows location of earthquakes of all magnitudes over a seven-day period. The size of a circle corresponds to the magnitude of the earthquake it represents. Which of the following conclusions is justified by this map?

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Explanation

The map shows that most earthquakes occur at or near tectonic plate boundaries. However, almost no earthquakes are shown in association with oceanic spreading centers. Almost all of the oceanic earthquakes shown are larger-magnitude earthquake associa

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D4C14 Which of the following events is most likely to result in the formation of a metamorphic rock at high temperature and pressure?

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Explanation

An igneous intrusion generally alters existing rock due to high heat without subjecting it to high differential pressure that produces alignment of mineral grains. This type of metamorphism is called contact metamorphism.

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D4C14 As a stream’s gradient decreases, the sediment load can exceed the stream’s capacity. What occurs in this situation?

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Explanation

As a stream loses capacity, which is a measure of the total possible sediment load it can transport, sediment is deposited and the stream channel builds up through the process of aggradation. Natural levees also form by deposition, but they are built up

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D4C14 In the desert of Coastal Peru, there are extensive fossil remains of rare marine mammals in geologic formations that are over 3 million years old. The presence of these marine sedimentary rock many miles inland from the Pacific Ocean and hundreds of feet above sea level is most likely a consequence of the which of the following processes?

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Explanation

The coast of Peru sits on the western margin of South American Tectonic Plate where that plate is overriding Nazca Tectonic Plates. As the Oceanic Nazca Plate is subducted beneath Continental margin of South America, the coast is steadily forced upward.

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D4C14 Much of Missouri has limestone and dolomite bedrock that can weather and produce karst formations such as sinkholes. How does the presence of vegetation affect the development of karst landforms?

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Explanation

Precipitation is, generally, naturally slightly acidic because CO2 dissolves in atmospheric moisture, producing a weak solution of carbonic acid. As precipitation moves downward through soil, its acidity is enhanced by organic acids released by plants a

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D4C15 Earth’s surface absorbs more solar radiation than it loses by the radiation of infrared energy. Which of the following processes is most responsible for maintaining the energy balance at Earth’s surface?

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Explanation

Surface water absorbs latent heat as it evaporates. As water vapor condenses in the atmosphere, the latent heat is released as sensible heat that warms the surrounding air.

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D4C15 A coastal aquifer can have a layer of fresh groundwater floating on top of a layer of salt water. Which of the following occurrences is most likely to cause saltwater contamination of the freshwater portion of the aquifer?

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Explanation

Pumping groundwater from a coastal aquifer can reduce the flow of fresh water toward the coast, allowing more salt water to flow into the aquifer. In addition, pumping can pull salt water up into the fresh water part of the aquifer in the vicinity of th

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D4C15 An estuary can be classified but its geologic setting. The estuary indicated by the arrow on the map is an example of a

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Explanation

A bar-built estuary is characterized by a sand spit or barrier island that separates a protected area of calm water, called a lagoon, from the open ocean. Sandbar or barrier island is built and maintained by the transport of sediment along a coast. Th

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D4C15 A hurricane is most likely to undergo rapid intensification over an area of tropical ocean where

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Explanation

Rapid intensification of a hurricane requires very warm sea surface temperatures, a surface mixed layer that is sufficiently deep to prevent winds from bringing cold water to the surface, low wind shear, and atmospheric temperature profile that cool with

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D4C15 Earth's climate continues to become warmer, which of the following consequences is most likely?

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Explanation

Tropical disease vectors such as mosquitoes and flies are affected by ecosystem changes. If global warming increases the tropical characteristics of neighboring regions, the ranges of tropical insect disease vectors are likely to expand, carrying diseas

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D4C15 Compared to a city located in the interior of a continent, a city at the same latitude located on a coast generally experiences

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Explanation

Because land has a lower heat capacity than water, land heats and cools more rapidly. Locations in continental interiors far from large bodies of water experience greater seasonal temperature ranges. Coastal locations tend to have smaller temperature

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D4C15 The June 15, 1991, eruption of Mount Pinatubo in the Philippines what's the largest eruption of the 20th century to affect a densely populated region. Continued eruption from June thru early September of 1991 injected about 20 million tons of sulfur dioxide into the stratosphere, where it reacted to produce sulfate aerosol. The sofa aerosol effective the atmosphere and the Earth system by

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Explanation

Atmospheric aerosols tend to reflect incoming solar energy back to space rather than allowing it to reach the planet's surface. Aerosols from Mount Pinatubo remained in the atmosphere for several years, and its presence caused a decrease in average glob

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D4C16 The process by which the solar system formed resulted in most of its mass being

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Explanation

The nebular hypothesis describes the gravitational collapse of a low-density cloud of interstellar gas and dust. Most of the mass collected in the center, forming the Sun, which contain 99.8% of the total mass of the solar system. The remainder of the

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D4C16 The ancient concept of the celestial sphere describes celestial bodies as being embedded in a sphere surrounding Earth. Modern astronomers still use the celestial sphere model to describe the

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Explanation

The celestial sphere model is used to represent the observable sky because it provides a simple way to describe the apparent daily motions of celestial objects, and effect caused by Earth's rotation. It is not suitable for describing the more complex lo

D4C14C15C16

Question 1 of 1

Time Left

D4C14 Seismic wave data indicates that Earth's inner core is solid and its outer core is liquid. What accounts for this difference?

Select the correct answer(s).

(0/0)

Explanation

D4C14 This US Geological Survey map shows location of earthquakes of all magnitudes over a seven-day period. The size of a circle corresponds to the magnitude of the earthquake it represents. Which of the following conclusions is justified by this map?

Select the correct answer(s).

(0/0)

Explanation

D4C14 Which of the following events is most likely to result in the formation of a metamorphic rock at high temperature and pressure?

Select the correct answer(s).

(0/0)

Explanation

D4C14 As a stream’s gradient decreases, the sediment load can exceed the stream’s capacity. What occurs in this situation?

Select the correct answer(s).

(0/0)

Explanation

Select the correct answer(s).

(0/0)

Explanation

D4C14 Much of Missouri has limestone and dolomite bedrock that can weather and produce karst formations such as sinkholes. How does the presence of vegetation affect the development of karst landforms?

Select the correct answer(s).

(0/0)

Explanation

D4C15 Earth’s surface absorbs more solar radiation than it loses by the radiation of infrared energy. Which of the following processes is most responsible for maintaining the energy balance at Earth’s surface?

Select the correct answer(s).

(0/0)

Explanation

D4C15 A coastal aquifer can have a layer of fresh groundwater floating on top of a layer of salt water. Which of the following occurrences is most likely to cause saltwater contamination of the freshwater portion of the aquifer?

Select the correct answer(s).

(0/0)

Explanation

D4C15 An estuary can be classified but its geologic setting. The estuary indicated by the arrow on the map is an example of a

Select the correct answer(s).

(0/0)

Explanation

D4C15 A hurricane is most likely to undergo rapid intensification over an area of tropical ocean where

Select the correct answer(s).

(0/0)

Explanation

D4C15 Earth's climate continues to become warmer, which of the following consequences is most likely?

Select the correct answer(s).

(0/0)

Explanation

D4C15 Compared to a city located in the interior of a continent, a city at the same latitude located on a coast generally experiences

Select the correct answer(s).

(0/0)

Explanation

Select the correct answer(s).

(0/0)

Explanation

D4C16 The process by which the solar system formed resulted in most of its mass being

Select the correct answer(s).

(0/0)

Explanation

D4C16 The ancient concept of the celestial sphere describes celestial bodies as being embedded in a sphere surrounding Earth. Modern astronomers still use the celestial sphere model to describe the

Select the correct answer(s).

(0/0)

Explanation

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