What percentage of geologic time is represented by recorded history? (Assume 5000 years for the length of recorded history.)

Answers

Answer 1

Answer:

only about 20% - 35%

Explanation:

We do not know that much about the earth itself, and people just recently started discovering the earth for what it truly is. Though, we have been recording earthquakes and tsunamis since the early 19th century.

This makes up anywhere from 20% to 35%. It is hard to know the exact percentage for sure.


Related Questions

A mantle hot spot has generated a long-lived plume beneath Yellowstone National Park, and the North American continent is moving __________ above it about 2 to 4 cm/yr.

Answers

Answer: I think Southeast

Explanation: The north american continent is moving southeast

Which of the following statements is NOT true:
a) Light moving from a source moving toward the observer will have a higher frequency than if the source were at rest with respect to the observer.
b) The value of Hubble's parameter, H, is determined by measured redshifts of spectral lines for distant galaxies. c) Hubble's parameter, H, is used to estimate both the Universe's size and age.
d) According to Hubble's Law all galaxies must be moving away (receding) from our own.

Answers

D) according to Hubble’s law all galaxies must be moving away (receding) from our own.

The question about the finding the true statement based on the space.

Hubble's law is based on the observed physical cosmology and the galaxy that are moving . The speed of earth is proportional to their distance. Thud on their basis the universe is expanding. The expansion is called as Hubble flow.Hubble parameter H is  dimension less title. It is a fundamental cosmological property. H, is not used to estimate both the Universe size and age of galaxies.

Hence the option C is correct.

Learn more about moving from a source moving.

brainly.com/question/397505.

Which substance is a natural land resource used in construction?

Answers

Answer:

wood?

Explanation:

Answer:

The answer is B) bedrock

Explanation:

It's right

Which type of soil would have the best resistance to wind erosion

Answers

Answer:

Clayey soilCoarse sandGravelly or rocky soils

Explanation:

These three to four are too heavy to be moved by wind erosion. They are very resistant.

I give credit to fao.org


Which statement gives an example that best demonstrates how the geosphere has affected the evolution of life on Earth?

Answers

Answer:

Certain plants have evolved to absorb pollutants like carbon monoxide and formaldehyde through their leaves.

Answer:

some spiders that live in caves....

Explanation:

A landowner who claims title to land deposited slowly by the action of a running stream would base such a claim upon:

Answers

Answer:

claim upon accretion

Explanation:

For moment to moment, when a rights of way scheme has been examined, it is found that the actual position of the current natural border of a land being invaded is not in accordance with the position of that border displayed in the map around which the designation is centred.

Where the variance in the position of the natural growing boundaries is due to either accumulation or an wrongly defined environmental boundaries on the map around which the title is centred, a land surveyor may proceed with an application under section 118 of the Land Title Law.

Because Iceland is part of the mid-ocean ridge, its composition is primarily basaltic, as would be expected of new oceanic crust. Based on your reading of the article and Essentials of Geology, explain why the magma encountered in the drilling was instead a rhyolite, which is more typical of continental crust. (Hint: what is the influence of partial melting on the magma composition

Answers

Answer:

Iceland lies very close to the ridge and rocks melt due to the competition of magma.

Explanation:

As Iceland forms a part of the mid-ocean ridge, it's composed mainly of the basaltic lava and the new oceanic crust is formed underneath this layer of crust as new lava spreads in both the sides if the mid-oceanic crust.  The particle melting of the solid rocks is controlled by the three features of temperature, pressure, and composition. These generate the magma and decompress the melting, the rocks melt slowly and gradually and there is a change in volume.


Which Southern European country has the least developed economy?

Question 11 options:

Portugal


Italy


Greece


Spain

Answers

Answer:

Greece has the least developed economy

Answer:

Hello!

Your answer is C. GREECE

Explanation:

HOPE THIS HELPS!

itsMATT04

what is slide length of a cube ? when the lateral area 676 square feet

Answers

Answer:

10.614       (Approximately)

Explanation:

First, your question is in the Geography section, when it should be in the Math section.

The lateral area of a cube is 676 sq feet. Lateral area of a cube can be found using the equation [tex]6s^2[/tex], where [tex]s[/tex] is the side length of one side. Set this equation equal to 676, then solve for [tex]s[/tex].

[tex]6s^2=676\\s^2=112.6667\\s=10.614[/tex]

Identify the characteristics of a unitary system, a federal system, and a confederate system. Provide at least one example or a unitary and a federal system.

Answers

Answer:

They are different forms of government.

Explanation:

A unitary system is a centralized form of system and we're all powers that are held by the same government and consist of a single agency like great Britain. In a federal system, the powers are divided between the center and the local government. like the U.S Canada, Switzerland and India. A confederation is an alliance of independent states or nations. Like the European Union.

Answer:

A unitary system is a centralized form of system and we're all powers that are held by the same government and consist of a single agency like great Britain.

In a federal system, the powers are divided between the center and the local government. like the U.S Canada, Switzerland and India.

A confederation is an alliance of independent states or nations. Like the European Union.

Explanation:

A streams velocity is at the bottom and edges

Answers

Answer:

correct

Explanation:

30.379944, -84.292603

Answers

Answer:-53.912659 is the answer

Explanation:

30.379944 - 84.292603  = -53.912659

Answer:

-53.912659

Explanation:

30.379944 - 84.292603  = -53.912659

What type of friction do the Nazca and South American plates have?

Answers

Answer:

Explanation:

The tectonic plates move among themselves as solid and rigid blocks, moving over the upper level of the mantle (asthenosphere).

When the plates get closer to each other, we say that they converge → ←, when they separate they diverge ← → and if what they do is move laterally next to each other they pass ⇅

In the case at hand, the Nazca oceanic plate converges with the South American continental plate, approaching each other at a rate of about 6 or 8 cm per year. And they have been doing so for at least the last 25 million years.

Since the Nazca plate, due to its composition, is denser than the South American plate, it has less buoyancy and when pushed against it, it folds and sinks towards the mantle where it melts. This process, called subduction, is responsible for the rising of the Andes, as well as the high seismicity and volcanism present along the South American west coast.

Answer:

Andes Mountains.

Explanation:

Though a few scientists remain skeptical, there is a a growing consensus that the present day warming is real and ___________ are driving it.
a. natural cycles
b. humans

Answers

Answer:

b

Explanation:

According to Codd's rules for relational database design, it is often ideal and most efficient for a single database field to contain multiple data values.
A. True
B. False

Answers

Answer:

A. True

Explanation:

Dr. Edgar F. Codd was able to generate twelve (12) rules after his research on the Relational Database Model. One of his rules, the second one precisely which is the Guaranteed Access Rule specifies that 'all single database elements or values are most certainly guaranteed to be accessible through a combination of the primary-key model also known as the row value, the attribute-name also designated as the column value and the table-name. The information rule which is the first rule also specifies that all information must be represented as one value in rows and columns.

So, this implies that a single database field should contain multiple data values. He also mentioned that data cannot be accessed through any other means except for the above stated.

2
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match the properties to the regular polygons they describe.
An interior angle measures 150".
An exterior angle measures 24.
The sum of the interior angles is 2520°.
An interior angle measures 160".
The sum of the exterior angles is 180º.
The sum of the interior angles is 2160°.
15-gon
16-gon
12.gon
18-gon
Reset
Next

Answers

Answer:

12.gon - An interior angle measures 150°

Called a Dodecagon, the sum of all of its interior angles is 1,800° therefore each individual angle is;

= 1,800/12

= 150°

15-gon - An exterior angle measures 24°

The sum of all the exterior angles of a polygon add up to 360 so a polygon with a 24° exterior angle is;

= 360/24

= 15°

16-gon - The sum of the interior angles is 2,520°

Known as a hexadecagon, each interior angle of this polygon is a 157.5° and when added up this comes to 2,520°.

18-gon - An interior angle measures 160°

The formula for calculating the interior angle of a polygon is;

Angle = (n−2) × 180° / n

160 = (n−2) × 180° / n

160n = 180n - 360

360 = 20n

n = 18

Other tiles

The sum of the exterior angles is 180º - all exterior angles must add up to 360º so this does not exist.

The sum of the interior angles is 2,160° - this is a 14 sided polygon which is not listed in the options.

does anyone have the same thing as me its called angle relationships i need the answers

All of the following issues are common problems that plague societies except __________. A. environmental concerns B. economic growth C. political conflicts D. social dilemmas

Answers

Answer:

B. economic growth

when an area doesn't have enough money the society falls

Answer:

b

Explanation: i tookith the testith

a sweater originally priced at $80 was marked down by 25% what was the price of the sweaterTerry earns $250 salary plus $5 per sale how many cells must Terry make to earn $765 altogether ​

Answers

Answer:

$60103 sales

Explanation:

1. The sweater was originally priced at $80 and then got marked down by 25%. The new price is;

= 80 * ( 1 - 25%)

= 80 * 0.75

= $60

2. Terry earns a basic salary of $250 plus $5 per sale. To make a total of $765, from sales commission alone Terry must make;

= 765 - 250

= $515

Sales to make = 515/5

= 103 sales

We live in diverse societies. It is normal for people to disagree about many
things, including religion and politics, but acceptance of the _____ can keep situations from becoming violent.

A. constitution

B. legitimacy of rule

C. legal charter

D. rule of law​

Answers

Answer: D. rule of law

Explanation:

Socrates once said that humans without rules are nothing but animals. This is an apparent reference to the savagery of the animal kingdom that can see violence occur at the slightest provocation. The Rule of Law refers to the governing principle that everyone is subject to laws that were enacted to ensure that people live together in such a way as not to infringe on the rights of others and thus to prevent societal breakdown.

This is why a general acceptance of it can keep the general peace and keep situations from getting violent. For example, if two people got into an accident and could not agree on who was wrong, if there were no laws on how such an issue would be handled, there would probably be violence between the two. Granted violence might still occur but the incidence rate of this has been greatly reduced thanks to a general agreement to respect the rule of law.

Answer:

D. rule of law keeps situations from becoming violent

The ability to see the connection between the larger world and your personal life is what sociologist

Answers

Answer:

More details

Explanation:

This 1920 picture is by famous photographer Lewis Hine. It shows a mechanic working on a steam pump used to generate electricity. The mechanic’s work is arduous and tiring. Based on the picture and the caption below it, what does arduous mean? A. highly creative B. mentally demanding C. well-paying D. physically demanding

Answers

Answer:

D. physically demanding


Geography and climate are important factors in forming a civilization. explain how this statement applies to the Indus Valley civilization?

Answers

Answer:

Hey there!

For geography: The Indus Valley civilization was built between the desert, mountains, forests. This caused the Indus Valley to have very fertile land, which was good for agriculture, and made the foundations of a good civilization. The deserts and mountains also provided a natural barrier between the Indus Valley and enemies.

For climate: The geography of the Indus Valley determined the climate, most notably the monsoon. The agriculture relied on these seasonal periods of heavy rain, which when used right, benefited the growing of crops. The rivers often flooded in the summertime, which was when the snow-capped himalayas melted.

Hope this helps :)

Answer:

Read Below

Explanation:

Geography and climate are important for many things. Just like now, planning ahead was never bad, and in fact there was nothing bad about it. Everyone knew that when starting something big, you have to have a plan. So, the location, the resources that are able to be used in that location, and then the readily available, easy accessible nature supplied things, were all taken to account on these types of builds. So with the Indus Valley Civilization, they took account of those measures, and made sure that the area could hold a village of people.

I mean they were so smart! They had the water source, the greenery, everything. They grew food like beans, wheat, barley, peas, and more. They had irrigated water into huge spring floods. That water from the Yellow River had be directed through the town and into the irrigate fields, which lessened the impact of damage that the floods could do. They build homes out of clay and brick, or sod. And they used the natural elements that they had. (Because they needed to)

I hope this helped!

Benefits of living in the country

Answers

Lower cost of living
Healthier live
Cleaner environment
Less crime and gangsters
Great place to live in if you like walking and running
Friendlier community
You would have more space to do whatever u want

Mexico is located on a land bridge.

Question 9 options:
True
False

Answers

Answer:

True

Explanation:

Mexico, along with Central America, is considered a land bridge because it is a narrower strip of land that joins the continents of North and South America.

True. Both North and South America connect through a narrow strip of land.

Given the incomplete proof below, what is the missing reason for the statement in step 4?
Given: ZABC - ZABD and AB is the
angle bisector of CAD
Prove: AC AD
B
D
Given
1. ZĀBC = ABD
2. ZCABZDAB
3. ABAB
4. A ABC ZA ABD
Given and definition of angle bisector
Reflexive property of congruence

A.AAS
B.SAS
C.ASA
D.CPCTC

Answers

Answer:

Ya got the wrong subject

Explanation:

You posted geometry.. this is geography. Try posting there eh

A biologist might designate regions based on

Answers

Answer:climate

Explanation:On apex

the diversity of coral reefs is second only to the diversity found in

Answers

Answer: Tropical Rain-forests

Explanation:

Tropical Rain-forests specifically those in Central Africa, Latin America and South-East Asia are considered the most diverse areas in the world with over half of animal species in the world as well as countless fauna calling these areas home even these forests cover less than 7% of the Earth's land mass.

For this reason Tropical Rain-forests are usually called the Cradle of life/biodiversity and surpass any other environment when it comes to biodiversity. Even the second which are Coral Reefs are known as Tropical Rain-forests of the sea which is a nod to just how diverse these forests are.

The sequence of increasing grades of metamorphism of a mudstone (shale, claystone, or siltstone) parent rock (protolith) is: slate (lowest grade), phyllite, schist, gneiss (highest grade).
1. Describe the change in grain size from slate to schist
2. How does the texture of phyllite differ from that of schist?
3. Why do you think that the micas (lat minerals) in these rocks are all parallel, r nearly so, to one another?

Answers

The slate is hard and fine-grained rocks and has a salty cleavage that is caused by the growth of minerals due to the metamorphose of the grain ground rocks while schist is medium grade sheet-like grain rock.

The texture of phyllite is very glittery as its a very fine grain size and the grains are flat. Schist has the greatest grain size. Phyllite has a foliated texture but schists consist of scale.Minerals like muscovite and biotite are common rocks forming minerals in micas and are found in the igneous rocks with feldspar and quartz, thus they are parallel and very finely grained flakes in the rock.

Hence slate (lowest grade), phyllite, schist, gneiss (highest grade) rocks.

Learn more about the sequence of increasing grades of metamorphism.

brainly.ph/question/9309026.

The corresponding sides of two similar triangles are?

Answers

Answer:

two sides of corresponding is similar side of corresponding side

During a summer trip, you observe that the bases of afternoon cumulus clouds are higher in Eastern Colorado compared to in Baltimore, Maryland. Based on concepts regarding stability and cloud development, explain why stratus clouds are typically observed along the coast of California.

Answers

Answer:

Westerlies helps being them towards the coasts.

Explanation:

Stratus is a low leveled cloud and is characterized by horizontal layering and has a uniform base and they are flat, hazy, and featureless clouds. The clouds that forms over the water and can be directed over the coastal land areas by the prevailing winds in southern California during the southern months.
Other Questions
2 lines connect to form a right angle. A third line extends between the 2 lines to form 2 angles which are labeled 1 and 2. Angles 1 and 2 are complementary and congruent. What is the measure of angle 1? 30 45 50 75 The award received by Richard ebright at age of 22 Explain Hertzspeung-Russell diagram relationship to stars life cycles Suppose that f(x)=4x+5. What is f^-1 (f^-1(9)) ? A ladder leaning against a wall makes a 35 angle with the ground. The foot of the ladder is 5 meters from the wall. What is the length of ladder? i will give brainliest and 50 points pls help ASP What would cause antibodies to attack the cells of the body? In the diagram of RST, which term describes point U? A.CircumcenterB.CentroidC.IncenterD.Orthocenter I need help for this problem! Carol received no points on an exam question but thinks she deserves some points back. Carol initially asked the teacher for all of the points for the question. The teacher refused but gave Carol a few more points. To get more points Carol used the ________ strategy to induce ________. Jonathan is a blind widower whose home is valued at $110,000. He is homesteaded and under 65. His School taxes are 10.23 mils, his county taxes 6.789 mils, and his city taxes are 8.78 mils. What are his annual taxes? The following set of ordered pairs represents a power inverse variation. Find the value of r given that k = 5. James Watson and Francis Crick are credited with discovering the structure of DNA. Which of the following characteristics of DNA did this discovery help explain? A How DNA passes on genetic information. B The amount of DNA in a chromosome. C The number of base pairs in a DNA molecule. D Why DNA exists in all living cells. A ball is thrown at 23.2 m/s inside a boxcar moving along the tracks at 34.9 m/s. What is the speed of the ball relative to the ground if the ball is thrown forward A 223.6 mL of volume of gas is measured at 74.5C. If the pressure remains unchanged, what is the volume of gas at standard temperature? A) 1820 B) 61.02 C) 819.4 D) -307.5 Suppose a piece of food is on the edge of a rotating microwave oven plate. Does it experience nonzero tangential acceleration, centripetal acceleration, or both when: (a) The plate starts to spin How are tropical rain forests and temperate forests different?A. Rain forests have more biodiversity.B. Rain forests have more seasonal changes.C. Rain forests are less productive.D. Rain forests have fewer species. Ashley, an only child, spends a great deal of time at her best friend's home. When she does go home, her parents hardly acknowledge her presence. They provide her with nice clothes, a bedroom that most of her friends would die for, and a nice home in a good neighborhood. However, Ashley often feels like a stranger around her parents. Ashley's parents are most likely In an endothermic reaction, a drop in temperature would be observed. TRUE FALSE Apr. 20 Purchased $40,250 of merchandise on credit from Locust, terms n/30. May 19 Replaced the April 20 account payable to Locust with a 90-day, 10%, $35,000 note payable along with paying $5,250 in cash. July 8 Borrowed $80,000 cash from NBR Bank by signing a 120-day, 9%, $80,000 note payable. ___?___ Paid the amount due on the note to Locust at the maturity date. ___?___ Paid the amount due on the note to NBR Bank at the maturity date. Nov. 28 Borrowed $42,000 cash from Fargo Bank by signing a 60-day, 8%, $42,000 note payable. Dec. 31 Recorded an adjusting entry for accrued interest on the note to Fargo Bank.