Answer: a. all older oceanic crust has been subducted into the mantle
Explanation:
Oceanic crusts are generally not known to survive as long as that of one found in the Mediterranean sea which is said to be more than 300 million years old. This is because approaching 200 million years old, oceanic crusts go back into the mantle at subduction zones in a process that can most accurately be described as recycling.
It is said that the oceanic crust in question is so old that it may have been part of Tethys, one of Earth's earlier oceans.
Suppose a future astronaut travels to a distance planet around a distant star. They collect rocks for dating the age of the planet and system. The astronaut compares the abundance of a certain radioactive element (half life of element = 500 million years) in the collected rocks to the abundance of the same element in a newly formed rock. They measure that there are 1/16th the number of radioactive atoms in the collected sample. How old is this planet?
a. 8 billion years old.
b. 4 billion years old.
c. 1 billion years old.
d. 2 billion years old.
e. 16 billion years old.
Answer:
The correct option is d
d. 2 billion years old.
Explanation:
The general formula to for the half life on an element is given as:
[tex]N(t)=N_o~ (\frac{1}{2})^{\frac{t}{t(1/2)}}[/tex]
Where
N(t) = Quantity of the substance remaining.
N(o) = Quantity of the substance which was initially present
t = time elapsed
t(1/2) = half life of the substance
In this question, we have to find t using the above formula, where
N(t) = 1/16
N(o) = 1
t(1/2) = 500
Substitute in the given formula:
[tex]1=\frac{1}{16}~ (\frac{1}{2})^{\frac{t}{500}}\\\text{Solve the equation for t}\\t = 2000[/tex]
Hence, the time planet has been into existence, or how old the planet is:
t = 2000 million years
or
t = 2 billion years
Which of the following statements best summarizes the effects of the London Fog of 1952? A. Pollution from coal fires caused over 4,000 deaths, leading the British government to change their outlook on pollution. B. Smog caused by automobiles hung over London for three months, prompting businesses to stagger their employees' working hours. C. Smog produced by steel mills reduced visibility in London to near zero. Many businesses moved out of the city, relocating to Bristol. D. Fog produced by the overheating of the Thames River blanketed the city for half a year, until steel mills diverted their hot effluent to cooling towers. Please select the best answer from the choices provided. A B C D
The correct answer is A. Pollution from coal fires caused over 4,000 deaths, leading the British government to change their outlook on pollution.
Explanation:
In December 1952 and during 5 days the city of London was covered by a thick fog. This was the result of a high amount of pollutants released by coal fires in power plants and houses heating systems along with cold weather conditions. This did not only lead to low visibility but had serious effects on the citizens in London as thousands had respiratory problems and around 4,000 died.
Additionally, this event triggered concerns between the citizens of England and made the government consider the use of coal and the pollution. Indeed, after this event, different laws were created to reduce the air pollution in cities such as London. According to this, the statement that summarizes the effects of this event is A.
Answer:
The answer is A. Got it right on EDGE 2022.
Explanation:
Match the definition to the appropriate term: A line in which two plates move in opposite directions from one another. Answer 1 Choose... A line in which one oceanic plate subducts underneath another oceanic plate. Answer 2 Choose... A line in which two plates slide horizontally past each other. Answer 3 Choose... A line in which an an oceanic plate subducts underneath a continental plate. Answer 4 Choose... A line at which a continental collision occurs.
Answers:
- A line in which two plates move in opposite directions from another is known as a divergent plate boundary.
- A line in which one oceanic plate subducts underneath another oceanic plate is called an ocean-ocean convergent plate boundary.
-A line in which two plates slide horizontally past each other is called a transform-fault boundary.
-A line in which an oceanic plate subducts underneath a continental plate is an ocean-continent convergence.
-A line at which a continental collision occurs is known as the continent-continent convergence boundary.
I hope this helps you. Please mark as brainliest:)))
What are the latitude and longitude of the site? Using background knowledge/basic research, how would you describe the location and geographic characteristics of this site (is it remote or close to large human populations, is it near ocean/land, what is the elevation, etc.)?
Answer: B
Explanation:
it is fact that there are lions in aferica
What is the value of ?
Answer:
picture?
Explanation:
What would fossil ages from the geologic timescale and an isotopic age on the granite tell us about the age of the unconformity
Answer:
The unconformity is older than the age assigned to the fossils. The granite is younger than the unconformity.
The unconformity is older than the age given to the fossils, according to the geologic time scale and an isotopic age on the granite. The unconformity is older than the granite.
What are fossils?Any surviving remains, impression, or evidence of a once-living thing from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe imprints in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.
Compared to the age given to the fossils, the unconformity is older. fossil data Which of the first living forms on Earth can you name
Therefore, The unconformity is older than the age given to the fossils, according to the geologic time
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Read the passage below and use the information to answer the question that follows. Ferdinand Magellan, a Portuguese navigator and sailor who sailed for Spain, was the first European to find a waterway between the Atlantic and Pacific oceans, and sail across the Pacific. He was the first person to lead a voyage completely around the world, proving that the Earth is round. In September 1519, Magellan left from southwestern Spain in command of five ships and a crew of over 250. The expedition sailed across the Atlantic and down the eastern coast of South America. As they sailed, they explored large rivers looking for the waterway that would connect them to the Pacific. When cold weather and winter storms forced them to camp near the southern tip of the continent, Magellan had serious problems to contend with. One of his ships was destroyed while exploring the area. A group of sailors unhappy with the length and danger of the trip attempted to take control of the expedition and return to Spain. Magellan put down this mutiny attempt by force, beheading the leader and leaving other members of the mutiny behind when the expedition continued. In October 1520, over a year after leaving Spain, they discovered the passage to the Pacific—a passage now called the Strait of Magellan. It took over a month to sail through the narrow, cold, stormy strait. During the passage through the strait one of Magellan’s ships deserted and returned to Spain. On November 28, the three remaining ships sailed out of the strait and into the ocean. Magellan named the ocean Pacifico (Pacific) which means peaceful because, compared to the tumultuous strait they had just been through, the ocean was amazingly calm. Since no European had previously crossed the Pacific, Earth’s largest stretch of ocean, Magellan and his crew had no idea how big it was and how long it would be before they would again see land. As they sailed month after month, their situation became desperate. Much of the crew became sick from scurvy, a disease caused by lack of vitamin C. Food supplies were not adequate for such a long voyage and those who not killed by scurvy were reduced to eating rats, shoe leather, and sawdust to survive. After over three months of sailing, Magellan’s expedition arrived in the islands now known as the Philippines. In the several weeks they stayed in the Philippines to recover Magellan and members of his crew became close to the islanders. Magellan converted some to Christianity. In April 1521 Magellan was killed while participating in a battle between rival groups on the island of Mactan. Based on the passage above, what does tumultuous mean? A. rough and uncertain B. calm and peaceful C. fun and exciting D. dull and boring Please select the best answer from the choices provided A B C D
Hey there! I'm happy to help!
Let's see where the word tumultuous is used here:
Magellan named the ocean Pacifico (Pacific) which means peaceful because, compared to the tumultuous strait they had just been through, the ocean was amazingly calm.
We see that they named the ocean the Pacific Ocean because it was very peaceful and calm compared to a tumultuous strait. This shows us that tumultuous is probably the opposite of peaceful. It probably means crazy, hectic, rough, harsh, etc. After going through a crazy thunderstorm, a light sprinkle would seem very peaceful, which is similar to how Magellan probably feels here.
This definition matches best with answer A. rough and uncertain.
Have a wonderful day! :D
Answer: This underlined sentence starts to build tension because
Captain Dall and Will Osten are planning a counterplot which might go wrong
.
Explanation:
________is a geo-lifestyle segmentation system.
A. Claritas
B. PRIZM
C. SRDS
D. VALS
E. MRI
Answer:
B. PRIZM
Explanation:
PRIZM is a geo-lifestyle segmentation system.
PRIZM organizes its 66 individual segments into social and lifestage groups.
Why does Earth have so many varied life forms but other planets in the solar system do not?
Answer:
because the earth is the only one planet which have suitable temperature,gases,landform for the living beings but the other planets have extremely cold or hot temperature and not have suitable air,landforms,etc so the earth have so many varied life forms but other planets in the solar system do not have.
Earth has many varied life forms but other planets do not because the earth is the only planet which has a suitable temperature, gasses, and landform for living beings but the other planets do not.
What is the earth?Earth is the third planet from the Sun and the only place in the universe known to harbour life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. Approximately 70.8% of Earth's surface is made up of the ocean, dwarfing Earth's polar ice, lakes, and rivers.
The remaining 29.2% of Earth's surface is land, consisting of continents and islands. Earth's surface layer is formed of several slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's liquid outer core generates the magnetic field that shapes the magnetosphere of the Earth, deflecting destructive solar winds.
The atmosphere of Earth consists mostly of nitrogen and oxygen.
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the hall of worship was also known as
Answer:
a religious building, such as a church, temple, synagogue, or mosque
Explanation:
Write a short note on iron and ore
Answer:
Iron and Ores
Explanation:
Iron ores are rocks and minerals from which metallic iron can be economically extracted. ...
Ores containing very high quantities of hematite or magnetite (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they can be fed directly into iron-making blast furnaces.
Where is the white house
Answer:
1600 Pennsylvania Avenue NW, Washington, DC 20500, United States
Explanation:
Exact White House address :D
1. Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. Jupiter and Saturn only:_______.
A. Composed mostly of hydrogen and helium.
B. Interior is mostly liquid or metallic hydrogen.
C. Blue color because of methane composed of mostly hydrogen compounds.
D. Magnetic field stronger than earths orbited by rings of ice and rock strong atmospheric winds and storms.
E. Approximately 10 earth-mass cores solid surface under a atmosphere.
2. Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. Uranus and Neptune only:_______.
A. Composed mostly of hydrogen and helium
B. Interior is mostly liquid or metallic hydrogen.
C. Blue color because of methane composed of mostly hydrogen compounds.
D. Magnetic field stronger than earths orbited by rings of ice and rock strong atmospheric winds and storms.
E. Approximately 10 earth-mass cores solid surface under a atmosphere.
3. Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. All four jovian Planets:_______.
A. Composed mostly of hydrogen and helium.
B. Interior is mostly liquid or metallic hydrogen.
C. Blue color because of methane composed of mostly hydrogen compounds.
D. Magnetic field stronger than earths orbited by rings of ice and rock strong atmospheric winds and storms.
E. Approximately 10 earth-mass cores solid surface under a atmosphere.
4. Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. No jovian Planets:______.
A. Composed mostly of hydrogen and helium
B. Interior is mostly liquid or metallic hydrogen.
C. Blue color because of methane composed of mostly hydrogen compounds.
D. Magnetic field stronger than earths orbited by rings of ice and rock strong atmospheric winds and storms.
E. Approximately 10 earth-mass cores solid surface under a atmosphere.
Answer:
Jupiter and Saturn only
Composed mostly of hydrogen and helium. Interior is mostly liquid or metallic hydrogenUranus and Neptune only:
Blue color because of methane composed of mostly hydrogen compounds.All four jovian Planets:
Approximately 10 earth-mass cores solid surface under a atmosphere.Magnetic field stronger than earth's orbited by rings of ice and rock strong atmospheric winds and storms.No jovian Planets:
solid surface under a atmosphereExplanation:
Jupiter and Saturn are composed of gases like Hydrogen and helium and thus are called gas giants and have a solid iron core. Uranus and Neptune are considered to be blue planets that are icy cold and also composed of mostly hydrogen. The four giant planets have a strong magnetic field and have strong atmospheric storms and winds, have rings made of ice and stones. While the non-jovian planets are rocky planet have a solid surface made of plate tectonics.Explain how, in late winter, with snow covered ground and a southeasterly wind, advection fog could develop at Atlanta’s International Airport (located in the US Southeast, over 200 miles from the ocean) to create low visibility and flight delays.
Answer:
In late winter with snow covered ground and a southeasterly wind advection fog could develop at Atlanta’s International Airport (located in the US Southeast, over 200 miles from the ocean) to create low visibility and flight delays. This is because when warmer air from the ocean moves to the land surfaces where the Atlanta’s International Airport is built on, it comes in contact with it .
When the air cools, the temperature reduces to the dew point temperature. This allows for increase in saturation levels necessary in the production of fogs.
8.Nobel laureate W. Sherwood Rowland referred to the ozone layer as the Achilles heel of our atmosphere. Explain the metaphor.
Answer:
Find the explanation below.
Explanation:
The metaphor, Achilles heel, was drawn from a Greek hero named Achilles who was very valiant, powerful, and courageous, but whose only weak point was his Achilles heel. A metaphor is a literary device that presents words as having deeper meanings, instead of just their literal meaning.
When Nobel laureate W. Sherwood Rowland referred to the ozone layer as the Achilles heel of our atmosphere, he was referring to the vulnerability the ozone layer has to be depleted and easily thinned due to changes in the composition of the atmosphere, in spite of its protective strength. Ozone is made up of three atoms of oxygen, and it works closely with the diatomic oxygen to absorb ultraviolet rays from the sun. Without its protective function, plants and animals would easily die-off on planet earth. Its Achilles heel is however in the fact that it is easily depleted making the earth more exposed to the sun.
Assume that Earth's tectonic plates have always been in the position they are today. What likely would have happened to marsupials under these conditions
Answer:
The Marsupials would be extinct as they wont be able to migrate to South America and Australia.
Explanation:
If the plate tectonics would be in a position as they are in today then the marsupials population that is found today in Australia and other countries would not have been possible as the plate tectonics would not allow them to migrate to these places. Even if they would migrate to another pace they would not survive as these creatures don't know how to travel longer distances and would eventually die of starvation.please help me with this question someone?
Answer:
Cinder Cone Volcanoes
these are the simplest type of volcano. They occur when particles and blobs of lava are ejected from a volcanic vent. The lava is blown violently into the air, and the pieces rain down around the vent. Over time, this builds up a circular or oval-shaped cone, with a bowl-shaped crater at the top. Cinder cone volcanoes rarely grow larger than about 1,000 feet above their surroundings.
Composite Volcanoes:
Composite volcanoes, or stratovolcanoes make up some of the world’s most memorable mountains: Mount Rainier, Mount Fuji, and Mount Cotopaxi, for example. These volcanoes have a conduit system inside them that channels magma from deep within the Earth to the surface. They can have clusters of vents, with lava breaking through walls, or issuing from fissures on the sides of the mountain. With all this material coming out, they can grow thousands of meters tall. As we’ve seen with the famous Mount Saint Helens, composite volcanoes can explode violently.
Shield Volcanoes:
These are large, broad volcanoes that look like shields from above – hence the name. The lava that pours out of shield volcanoes is thin, so it can travel for great distances down the shallow slopes of the volcano. These volcanos build up slowly over time, with hundreds of eruptions, creating many layers. They’re not likely to explode catastrophically. Perhaps the best known shield volcanoes are the ones that make up the Hawaiian Islands, especially Mauna Loa and Mauna Kea.
Lava Domes:
Volcanic or lava domes are created by small masses of lava which are too viscous (thick) to flow very far. Unlike shield volcanoes, with low-viscosity lava, the magma from volcanic domes just pile up over and around the vent. The dome grows by expansion of the lava within, and the mountain forms from material spilling off the sides of the growing dome. Lava domes can explode violently, releasing a huge amount of hot rock and ash.
Explanation:
The geology covered in this course is science. The information consists of facts or theories verified using the scientific method of inquiry, involving the testing of hypothesis through controlled experiments. None of the information in this course is founded merely on personal beliefs.
a) true
b) false
Answer:
a) true
Explanation:
Geology is a scientific study and is an earth science that is concerned with the earth and process that takes place ver earth by the way they change over time It includes the study of the weather phenomenon i.e the terrestrial planet and the natural satellite. It deals with the process that shapes the structure and provides us with relative and absolute ages.Match each description with one of the cloud types listed. Each description matches one cloud type. Group of answer choices high, puffy clouds that often appear in rows Cirrocumulus Can produce hail Cumulonimbus low-level lumpy cloud that often appear in rows Stratocumulus Associated with continually falling rain or snow Nimbostratus mid-level layered cloud producing a dimly visible sun altocumulus a line of vertically developed clouds, tops resemble cauliflower Cumulus Congestus sacks that hang from the underside of a cloud mammatus mid-level puffy cloud altocumulus
Answer:
The correct matching in between description and types of clouds are as follows:
Description Type
1. High, puffy clouds that appear in rows - Cirrocumulus
2. Can produce hail - Cumulonimbus
3. Low level lumpy cloud that often appear in rows - Stratocumulus
4. Associated with continually flowing rain and show - Nimbostratus
5. Mid level layered cloud producing a dimly visible Sun - Altostratus
6. A line of vertically developed clouds, top resemble
cauliflower - Cumulus Congestus
7. Sacks that hang from the underside of a cloud - Mammatus
8. Mid level puffy cloud - Altocumulus
What is the capital of GA?
Nevada has several gaps in the belt of historic seismicity, suggesting residents in these seismic gaps may be in for some future earthquakes.
1. True
2. False
Answer:
1. True
Explanation:
A seismic gap is an active fault known for making significant earthquakes and states that after a long period of time the displacement of any segments along the fault can lead to earthquakes. Any large and long standing gaps are thus considered to be under future earthquakes. Example of the san Andreas faults that have recorded seismic activity.Which climate has almost no precipitation and large temperature range
Answer:
Explanation:
Ok
Q4 please for a branliest answer
Answer:
q no .5
ans= because as they are found in the shothern part of world where there is alots of rainfall . as there is hot climatic condition , receives more rainfall and due to plain land the waters also gets stored in underground so, they remain evergreeen.
hope it will help u..
Which of the following is an example of the effect on human life of the
processes within Earth's water system (the hydrosphere)?
Answer:
The hydrosphere provides humans with water. When runoff from precipitation happens, plants and animals can grow and produce food and resources for humans to use.
Explanation:
what has amazing mountain landscapes with rapidly melting glaciers, tropical savannas for world-class safaris, beaches, and even deserts.
Answer:
Tanzania is home to Mount Kilimanjaro which is the highest point in Africa.
Explanation:
However, the lower latitudes mean that glaciers and tropical savannas easily fuse. Tanzania is home to some of the most popular national parks and natural attractions in Africa, including the majestic Kilimanjaro Mountain.
Tanzania is a country in East Africa noted for its vast desert areas. They include the Everglades National Park plains, a safari hotbed inhabited by game "big five" (anteater, lion, cheetah, bull, wildebeest), and safari National Park, host to the tallest peak in Africa.
Explain briefly about Mining.
Answer:
Mining
Explanation:
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an orebody, lode, vein, seam, reef, or placer deposit. These deposits form a mineralized package that is of economic interest to the miner.
Answer:
use google search engine instead of brainly, or maybe answer questions regarding what the questions are asking directly. anus.
Explanation:
Imagine that you live in a coastal community in a region prone to earthquakes; you are a board member of your regional electrical utility. The utility is considering constructing a nuclear power plant 10 miles up the coast from your town. Some of your fellow citizens support the project because it will bring employment to the region and provide a carbon-free source of electricity. However, some residents fear a repeat of the events of 2011 in northeastern Japan if there should be a significant earthquake along one of the onshore or offshore faults.
Required:
List three specific pieces of information that you would insist on obtaining from geologists and other scientists before casting your vote on the project."
Answer:
1. Will power plant building be earthquake proof?
2. Will the chemicals placed in the power plant be enough secure that it does not leak or are prone to any explosion?
3. What are the chances of the site facing an earthquake?
Explanation:
1. Will power plant building be earthquake proof?
The building should be secure for the scientists working there and for the chemicals placed in there, if the site faces an earthquake an earthquake building may collapse and can result in explosions of the chemicals.
2. Will the chemicals placed in the power plant be enough secure that it does not leak or are prone to any explosion?
The chemicals placed in the power plant needs to be secured in a place where no unauthenticated entrance is allowed and if any earthquake hits the chemicals do not spill out or mix up which may result in explosions.
3. What are the chances of the site facing an earthquake?
Having a probability study before constructing a power plant is important, a complete chart should be made which shows the probability of this site hitting earthquake this study may be based on past results.
Explain how cities in China handle growth in population compared to growth in industrial activity. NEED ASAP
Answer:
One/Two Child Policy
Explanation:
Families, since of 2013, can have two children if one parent, rather than both parents, was an only child.
Answer:
When poor, rural residents move to cities in China, they are often settled into urban villages. These villages are clustered near the inner city to allow for more efficient municipal and social services. Industrial growth is targeted at new developments along the edges of a city. Together, these two policies aim to keep the city itself from growing too physically large during high influxes of migrants.
Explanation:
Answer on edmentum
which air mass is likely to form over Victoria Island in northern Canada and over Greenland in January and what would its characteristics be
Answer:
Continental polar air mass.
Explanation:
The northern parts of Canada are those areas that lie in the arctic circle and covers about 40% of Canada's land area. A total area of 3,535,263 km sq. The air is dry and cold throughout the region. In summer months the temperature is about 7.2 degrees. The continental polar air mass moves don from the polar regions and influences the temperatures of northern America.