Obsidian is an extrusive igneous rock. Where was this rock most likely formed? O on the surface of a volcano O on a river O bed deep inside a volcano

Answers

Answer 1

Answer:

surface of a volcano

Explanation:

Related Questions

How does proximity to the ocean moderate air temperature on a daily and annual basis?
Greg is designing the clock face for a homemade clock. Using the center of the clock face as the origin, he places the label 12 at the point (0, 5). At what point should he place the label 6?
The Dust Bowl occurred as a result of drought and poor farming practices.a. Trueb. False
In areas of Latin America where drug production and trafficking are high, it is common to findA) an increase in damage to sensitive ecosystems. B) a decrease in the displacement of local animals. C) a decrease in the displacement of local animals. D) a decreased area of wilderness used to produce drugs.
In 2001, scientists announced that they had discovered a species of dinosaur called Albertaceratops nesmoi that they believed to be an ancestor of another better-known dinosaur species. How would scientists have determined that this newly discovered species was related to other known species of dinosaur? A) Scientists made careful observations of behavioral patterns. Eliminate B) The DNA mutation rates for both species was calculated and compared. C) Scientists made a detailed analysis of the fossilized bones of each species. D) The enzyme activity of each species was studied to determine similarities in metabolism.

Hurricanes are storms with winds of _____ mph or above.

Answers

To be classified as a hurricane a typical Cyclone must have a maximum sustained winds at least 74 mph.

Depending on its mass, it can take millions to trillions of years for a star to evolve from a main-sequence star to a red giant. Despite this astronomical length of time, astronomers are confident in their models of stellar evolution. Which of the following statements best describe why astronomers firmly believe that their models of stellar evolution are correct?

Answers

Answer: See explanation.

Explanation:

Because Astronomers have well-tested theoretical models that explain how a star evolves over the course of its life as well as well-tested theoretical models that explain how a star evolves over the course of its life.

About 260 million years ago, Earth's continents moved together to form the supercontinent calledCambria.
Antarctica.
Pangaea.
North America.

Answers

About 260 million years ago, Earth's continents pushed together to form the supercontinent called Pangaea.

Many people have listened of Pangaea, the supercontinent that included all continents on Earth and started to break up about 175 million years ago. But before Pangaea, Earth's landmasses pulled apart and smashed back together to form supercontinents continually. Pangea, also spelled Pangaea, in early geologic time, a supercontinent that included almost all the landmasses on Earth.

Why did Pangaea break up?

Scientists believe that Pangea busted apart for the same reason that the plates are moving today. The movement is compelled by the convection currents that move over in the upper zone of the mantle. This action in the mantle causes the plates to move gradually across the surface of the Earth. Pangea was encircled by a global ocean called Panthalassa, and it was totally constructed by the Early Permian Epoch (some 299 million to about 273 million years ago).

What is the subsequent supercontinent?

Pangaea Proxima (also called Pangaea Ultima, Neopangaea, and Pangaea II) is a potential future supercontinent configuration. Consistent with the supercontinent cycle, Pangaea Proxima could happen within the next 200 million years.

Does Pangea nevertheless exist today?

Although so-called spreading centers (linear boundaries between diverging plates on the sea floor characterized by rising magma) have been shown to exist, an description of how mantle convection actually works remains elusive to this day. Everyday geology has shown that Pangea did actually exist.

To learn more about Pangaea, refer

brainly.com/question/11420574

#SPJ2

260 million years ago there was a supercontinet called Pangaea

The process by which an area can become plantless and dry over a long period of time is called _________.A. aridity
B. evaporation
C. bioreduction
D. desertification

Answers

The first answer is answer. not a process, so it can't be the correct answer.

The second answer refers to the process of liquids changing their state to gas- so it's also not the correct answer.

The correct answer is the last one: desertification!- this is the process when a place becomes a dry and plantles ground.

Answer:

The answer is A

Explanation:

The Northeast became a leader in commerce because of its

Answers

The Northeast became a leader in commerce because of its location and early development of industrial industries. The Northeast became a manufacturing hub in the colonies and in the newly formed United States which created specialization and the growth of commerce in this region relative to the South which was more agriculturally based.

The rotating loops of currents that occur in the ocean are referred to as _____.

Answers

The rotating loops of currents that occur in the ocean are referred to as gyres.

Other Questions

Mr. Hitch taught us about sedimentary, metamorphic, and igneous rocks. He described how they were formed, what they contain, and showed us samples of each. He is a good _____. astronomer meteorologist geologist oceanographer

Why is groundwater an important source of freshwater storage?a. It constitutes approximately 30% of Earth s freshwater. b. It is the only viable source of freshwater in some areas. c. It is available in conditions of drought. d. All of the above

Nitrogen gas is most commonly found in which earths sphere?a. Biosphereb. Exospherec. Atmosphered. Hydrosphere

Alpha centauri, the closest star to the sun, is 4.3 ly away.