Excerpt from Stuff Matters
By Mark Miodownik
At some point humans made the discovery that would end the Stone Age and open the door to a seemingly unlimited supply
of the stuff. They discovered that a certain greenish rock, when put into a very hot fire and surrounded by red-hot embers,
turns into a shiny piece of metal. This greenish rock was malachite, and the metal was, of course, copper. It must have been
the most dazzling revelation. Suddenly the discoverers were surrounded not by dead inert rock but by mysterious stuff that
had an inner life. They would have been capable of performing this transformation with only a few particular types of rock,
such as malachite, because getting it to work reliably depends not just on identifying these rocks but also on carefully
controlling the chemical conditions of the fire. But they must have suspected that those rocks that didn't work, that remained
obstinately rock-like however hot the fire became, had hidden secrets. They were right. It's a process that works for many
minerals, although it would be thousands of years before an understanding of the chemistry required (controlling the
chemical reactions between the rock and the gases created in the fire) led to the next real breakthrough in smelting. In the
meantime, from around 5000 BC, early metal smiths used trial and error to hone the process of the production of copper. The
making of copper tools initiated a spectacular growth in human technology, being instrumental in the birth of other
technologies, cities, and the first great civilizations. The pyramids of Egypt are an example of what became possible once
there were plentiful copper tools. Each block of stone in each pyramid was extracted from amine and individually hand-
carved using copper chisels. It is estimated that ten thousand tons of copper ore were mined throughout ancient Egypt to
create the three hundred thousand chisels needed. It was an enormous achievement, without which the pyramids could not
have been built, however many slaves were used, since it is not practical to carve rock without metal tools. It is all the more
impressive given that copper is not the ideal material for cutting rock since it is not very hard. Sculpting a piece of limestone
with a copper chisel quickly blunts the chisel. It is estimated that the copper chisels would have needed to be sharpened
every few hammer blows in order for them to be useful. Which sentence shows that the human civilization has been positively affected by the discovery of copper A) in the meantime from around 5000 BC early metalsmith‘s use trial and error to hell in the process of the production of copper be it is estimated that 10,000 tons of copper or for mine throughout ancient Egypt to create the 3000 chisels needed see the making of cover tools initiated a spectacular grown and human technology being instrumental in the birth of technologies cities in the first great civilizations de it is estimated that the copper chisels would have needed to be sharpened every few hammer blows in order to them to be useful

Answers

Answer 1

Answer:

the making of cover tools initiated a spectacular grown and human technology being instrumental in the birth of technologies cities  

Explanation:

The text shows how the manipulation of fire and malachite for the creation of copper was very important for the evolution of societies and the construction of modern and technological cities. As seen in the text, the civilization of ancient Egypt, one of the most successful and modern of antiquity, depended heavily on the manipulation of copper to succeed in its works, just as this element was important for the manufacture of tools and objects .

Of course, this manipulation was not born overnight and it took a process that took years of trial and error, capable of developing the knowledge necessary to use this tool.


Related Questions

Which statement best synthesizes information from these passages? The Declaration of Sentiments was written at the Seneca Falls Convention to explain why women should be afforded equal rights. In 1848, delegates at the Seneca Falls Convention used the Declaration of Independence to explain why women should have equal rights. The Declaration of Independence built on the ideas of Enlightenment thinkers and has served as inspiration for many people. In 1776, colonists came together to discuss the rights of colonists. Similarly, in 1848, Americans came together to discuss the rights of women.

Answers

Answer:

It's B) In 1848, delegates at the Seneca Falls Convention used the Declaration of Independence to explain why women should have equal rights.

Answer:

B

Explanation:

We had what we had on. I remembered fifteen thousand pesos in the wardrobe in my bedroom. Too late now.

What does this detail suggest about the force or creature that has invaded the house of the narrator and his sister?

Answers

Answer:

That it was terrifying enough to make them forget their valued possessions.

Explanation:

The given excerpt is from the short story House Taken Over (Casa Tomada) written by Julio Cortázar. It tells about a brother and sister living in a home taken over by unknown entities. The story belongs to the genre called magical realism, which was common among mid-20th-century Argentinian writers. The story starts realistically, but then natural laws slowly become distorted.

The excerpt is located at the end of the story, when the protagonists leave the house, and tells us that the entity was terrifying enough to make them forget their most valued possessions.

Dr. Thomas Jones lives on East Main Street. Choose the type of error that the sentence contains. error concerning capitalization error concerning abbreviations error involving numbers error involving spelling no error

Answers

Answer:

No error

Explanation:

There are no errors in this sentence.

The abbreviation Dr. is written correctly, and it stands for Doctor.

Thomas James is a full name. It's written correctly as both the first and the last names are capitalized.

East Main Street is a street name. Street names are also capitalized, so this is written correctly.

All words are spelled correctly. There are no numbers in the given sentence, so there are no errors involving numbers, either.

Answer:

no error

Explanation:

Gross domestic product is used to measure a country’s total __________. A. costs B. welfare C. production D. population Please select the best answer from the choices provided A B C D

Answers

Answer:

the answer is c

Explanation:

Answer:

hope this helps!!

Explanation:

to check an object's authenticity is to find out whether it is
A) genuine
B) heavy enough
C) working correctly
D) paid for

Answers

I think A but I’m not sure
i believe the answer is A!

BRAINLIEST TO CORRECT ANSWER
What statements are correct? Check all that apply.
Write the mixed numbers as improper fractions.
Multiply the numerators to get 24.
Multiply the denominators to get 6.
Write the improper fraction as a mixed number.
The product is 4.
2
The product is 2
5
273

Answers

1,2,3,4,5 is correct

Kiesha's conclusion to an essay on the Rosetta Stone reads, "The Rosetta Stone is part of the collection of the British Museum." The teacher asks her to rewrite the conclusion. Which mistake did Kiesha make in her conclusion to the essay?(1 point)

She was too informal.

She should have repeated her introduction.

She added a random fact instead of addressing major themes.

Her conclusion was fine as is, and the teacher made a mistake.

Answers

Answer:

B

Explanation:

Which sentence uses a verb in the active voice?


Isaac was called by Andrea during the snow storm.

During the snow storm, Isaac was called by Andrea.

During the snow storm, Andrea called Isaac.

Isaac was called during the snow storm.

Answers

Answer:

During the storm, Andrea called Issac.

Explanation:

i got 100%

Answer:

C

Explanation:

I took the test

One angle of a triangle is 3 times the smallest. The 3rd angle is 5 times more than the smallest. Find all three angles.

A.
30, 60, 90

B.
20, 40, 120

C.
15, 45, 120

D.
20, 60, 100

Answers

Answer:

The answer is D

Explanation:

In the problem it says that the 3rd angle is 5 times than the smallest, which means if you multiply the smallest number by five it is supposed to equal the largest number.

8. Change the following sentences using used to.
a) I was in love with her.
b) We went to school together.
c) How did you spend the winter evening?
d) Trains were driven by steam at one time.
e) They did not go out on those days.​

Answers

Answer:

a) I used to be in love with her

b)We used to go to school together

c)How did you used to spend the winter evening?

d)Trains used to be driven by steam at one time.

e)They did not used to go out on those days.

Explanation:

When we change the sentences using "used to", we have:

a) I used to be in love with her.

b) We used to go to school together.

c) How did you use to spend the winter evening?

d) Trains used to be driven by steam at one time.

e) They did not use to go out on those days.

The phrase "used to" is used to refer to an action that happened repeatedly in the past but that no longer happens.Suppose that, when you were a child, you had to the habit of waking up early every day just to watch cartoons. You can use "used to" to express that: "I used to wake up early to watch cartoons when I was a child."When forming negative or interrogative sentences, we must use the auxiliary "did". In that case, "used to" becomes "use to".Affirmative: I used to wake up early.Negative: I didn't use to wake up early.Interrogative: Did you use to wake up early?

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Read the paragraph.
The sun is high in the southern sky–Just over the flagpole. I've watched out my window this morning as it moved from the roof of thehospital at 7:15 to a polnt Just above the Coliseum at 9:30 to the mid-sky now just before noon. It's a beautiful fall day-blue sky, white/silver/gray cloud puffs, and a few golden leaves still fluttering from the trees. I think I'll go outside and walk for awhile.Which does the weather make the writer want to do?
1. read a good book
2. go on a picnic
3. walk outdoors
4. go for a swim

Answers

The answer is 2 walk outdoors
the answer is

3. Walk outside

Which piece of advice from Last Lecture best supports the idea that it is important to achieve your dreams?
Never give up.
Apologize when you scr:w up.
Show gratitude.
Find the best in everybody.

Answers

Answer: Never give up

Explanation:

A piece of evidence that is best-supporting ideas of the author of ''The Last Lecture'' is to never give up but besides that, it is also important to have fun, help other people, have good role models, and to be loyal.

Randy Pausch, the author, is telling the people that even if you 'fail', you will receive an experience that can help you in the lifetime. If you give up, you will end without experience.

-Apologize when you scr:w up and Find the best in everybody is his advice when you need help from people.

-He is saying that gratitude is also important for achieving your dreams but a piece of advice that comes first when he is talking about achieving dreams is to never give up.

Answer:

The answer is A

Explanation:

I hope I helped!!

Pick a, b, c, or d
To tell which fits the best in the sentence

Answers

Answer:

A

Explanation:

Write a persuasive essay
stating which you believe is
the most important
Amendment to the U.S.
Constitution: Amendment
One, Four, or Six. Include
three reasons to support your
thesis.

Answers

Answer:

No más corrección

Qué la Justicia prevalezca

eso no más se

Explanation:

espero que te sirva

what is the summary of A Simple Act by Tyler Jackson

Answers

Answer:

The short story "A Simple Act" tells the story of Laura Schroff and Maurice Mazyck and the "invisible thread" that connects them.

Explanation:

Tyler Jackson's short story "A Simple Act" revolves around the friendship of two strangers Laura Schroff and Maurice Mazyck, an eleven-year-old boy who Laura met one day on her way to work. The story talks of an "invisible thread" that binds the two to become life-long friends.

The story tells how Laura met Maurice begging on the side of the road one September morning in 1986. Feeling a sense of 'connection' with the young 'begging' boy, she was drawn to help the young boy. And as time goes on, their relationship began to flourish, making them life-long friends. Laura helped the young Maurice improve his life, be more positive, experience new things, and eventually helped each other navigate life together. Their friendship thus led to the appreciation of each others' presence in their lives.

The summary of A Simple Act by Tyler Jackson is the story of Laura Schiff and Maurice and how an invisible thread connected them.

The short story is about an act of friendship between two strangers. The story showed an invisible thread that binds the strangers together.

Laura met Maurice begging by the roadside. She felt and sense of connection and wanted to help him. Their relationship then grew when they became friends. Laura was vital in the improvement of Maurice's life.

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Choose a matching analogy.
root:plant
fleet:car
Surgeon:operation
Senator:mayor

Answers

Answer:

root plant

Explanation:

roots are parts of plants, plants cannot live without roots

How does the point of view from which The Giver is told focus on Jonas’s thoughts and feelings about the Ceremony of Twelve? (The Giver chapter 2)

Answers

Answer:

If you have the book near you, look for key factors in the book. If you don't,

Explanation:

We are introduced to Jonas, the eleven-year-old protagonist of the story, as he struggles to find the right word to describe his feelings as he approaches an important milestone. He rejects “frightened” as too strong a word, recalling a time when he had really been frightened: a year ago, an unidentified aircraft flew over his community—it was a strange and unprecedented event, since Pilots were not allowed to fly over the community. As Jonas remembers the community reaction to the event, we learn more about the society in which he lives. It is extremely structured, with official orders transmitted through loudspeakers planted all around the community. As a punishment, the pilot was “released” from the community—the worst fate that can befall a citizen. Jonas decides he is apprehensive, not frightened, about the important thing that is going to happen in December. Jonas and his society value the use of precise and accurate language. At dinner that night, Jonas’s family—his father, mother, and seven-year-old sister Lily—participate in a nightly ritual called “the telling of feelings.” Each person describes an emotion that he or she experienced during the day and discusses it with the others. Lily says she was angry at a child visiting from a nearby community who did not observe her childcare group’s play area rules. Her parents help her to understand that the boy probably felt out of place, and she becomes less angry. Jonas’s father, who is a Nurturer (he takes care of the community’s babies, or newchildren), describes his struggles with a slowly developing baby whose weakness makes it a candidate for release. The family considers taking care of the baby for a while, though they are not allowed to adopt him—every household is allowed only one male and one female child. We also learn that spouses are assigned by the government. Jonas explains his apprehensiveness about the coming Ceremony of Twelve—the time when he will be assigned a career and begin life as an adult. We learn that every December, all of the children in the community are promoted to the next age group—all four-year-old children become Fives, regardless of the time of year when they were actually born. We also learn that fifty children are born every year. The ceremonies are different for each age group. At the Ceremony of One newchildren, who have spent their first year at the Nurturing Center, are assigned to family units and given a name to use in addition to the number they were given at birth. Jonas’s father confesses to his family that he has peeked at the struggling newchild’s name—Gabriel—in the hopes that calling him a name will help the child develop more quickly. Jonas is surprised that his father would break any kind of rule, though the members of the community seem to bend rules once in a while. For instance, older siblings often teach younger siblings to ride bicycles before the Ceremony of Nine, when they receive their first official bicycles. At the beginning of The Giver, we have a difficult time figuring out the setting of the novel. We do not know what it is that Jonas is afraid of—from the reference to unidentified aircraft, we might think that he lives in a war zone. When we find out that it is against the rules for Pilots to fly over the community, we know that Jonas lives in a community that is different from our own, but we do not know at first how different it. Lowry allows the small details about life in Jonas’s community to build up gradually into a more complete picture. Initially, the picture we get of Jonas’s society is positive. From the emphasis on precision of language and the considerate, careful way in which Jonas’s family shares its feelings, we learn that his society values the clear communication of ideas. We also know that members of the community pay attention to each other’s feelings and try to solve each other’s problems in rational, reassuring ways: the family helps Lily to control her anger and encourages her to feel empathy for visitors in unfamiliar surroundings, and they resolve to help their father take care of a struggling baby. The community must be very safe and peaceful indeed if the only time Jonas can remember being frightened is when an unidentified plane flew over his community. Some aspects of life in the community are startling, but they are easily explained. The loudspeakers transmitting orders to the people in the community are somewhat unsettling—the idea of a disembodied, faceless authority with the power to control many people’s actions is reminiscent of police states and dictatorships. At the same time, it is a convenient public address system that was able to reassure many frightened people.

Does anyone know about Nanowrimo?
It's a writers platform for people to write novels, poetry and much more.
You can write whatever you want and you can have your writings entered in contests to win, or you can just keep them up for others in your class to view

Answers

Answer:

Yes.

Explanation:

:p

Ya my father wrote his own book and published it.

True or False

8. A sick person usually welcomes an antibody.
9. A controversial news story seldom generates further discussion.
10. For a peaceful relationship, mutual antagonism should be resolved.

Answers

Answer:

1 True

2 False

3 True

hear is your answer

What was Reyna's relationship to her son's father, Francisco?

Answers

his wife hahahahhaa that’s funny

What is the part of speech of the word "intently" in this sentence? The lion stared intently at the spectators from behind the glass, desire radiating from his skin.

Answers

Answer:

It's an adverb. It modifies the verb 'stared.'

Explanation:

In what kinds of situations are police officers most likely to use force? When has too much force been used?

Answers

Answer

Explanation:

in a situation like arresting someone or investigation, a drunk person, etc

Answer:

1. When someone pulls a deadly weapon on the officer, when someone is threating to kill someone that they are holding at gun point

2. Elijah Jovan McClain's death, the officers used a position that was banned becase it wss inyumane just because they thought he looked 'sus'

Explanation:

Police officers were examining the evidence.

Answers

This is a statement so.

Look at the questions. What is the most appropriate time to ask each question about a text? during after before How can I put what I am reading in my own words?  What do I already know about this topic?  What would a good summary of this text look like?​

Answers

Answer:

good summary - after

already know - before

your own words - during

Explanation:

The most appropriate time to ask each question about a text is

before- What do I already know about this topic?during- How can I put what I am reading in my own words?after- What would a good summary of this text look like?​

Before writing about a topic, we should always ask ourselves what we already know about the topic. This helps us with differentiating what we need to research and what we already know about the topic.During writing that topic, we should use our own words to explain our viewpoints and the points we learnt from our research. After having written the text, we should mention all the points of the entire text in brief in the summary of the text. By dividing what tasks must be done before, during and after writing a text, we get a crisp and well-written and structured text.

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Is the word in bold letters an adjective, predicate adjective, or adverb?

The concert pianist plays the piano *well*.

Answers

Answer:

adverb

Explanation:

well is an adverb describing the verb plays

According to "The Automation Paradox":

Which of the following does James Bessen identify as an effect of automation that will have a positive impact on jobs?

a
increased demand
b
more work space
c
slower production
d
higher prices

Answers

Answer:

A. Increased demand

Explanation:

James Bessen says:

It turns out that workers will have greater employment opportunities if their occupation undergoes some degree of computer automation.

Despite many people fearing that the machines will take over jobs performed by workers and increase unemployment, Bessen thinks that that automation will cause increased demand.

Which of the following words has both a prefix and suffix? Unnecessary, proportionately, semisweet, uneventfully.

Answers

Answer:

uneventfully. un- and -ly

Read the excerpt from Common Sense.

“To talk of friendship with those in whom our reason forbids us to have faith . . . is madness and folly.”

Paine uses the words “madness and folly” to emphasize that the colonists
are not allowed to have a positive relationship with Britain.
must continue to try to build a relationship with the king.
are unwise in attempting to achieve a positive relationship with Britain.
must be careful in their dealings with the king because he has gone mad.

Answers

Bruh bruh bruh bruh bruh bruh

Who does the author of the "Equal Pay Bill" letter think is at risk if women are
paid forthe same wages as men?
A. Wealthy families
B. Families and society
C. Low-wage earners
D. Educated women

Answers

Answer: families and society

Explanation:

Answer:

families and society

Explanation:

just took it

At the end of chapter 6 in what ways does ponyboy and darry relationship change?



GIVE ANSWER

Answers

Answer:

whn pony was in the hospital,he sees darry crying and realizes tht darry rlly does care abt him.pony realizes tht darry actuall loves him nd whn they got out the hospital,darry was mose understanding and sympathetic.i feel like after tht,pony held him up on a different light ig u can say

Explanation:

hope this helps,have a good day and happy halloween

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