Every day it seems, new inventions surface that promise to add value to our day-to-day lives. But did you know, many of the inventions we interact with on a daily basis were developed completely by accident?

Take the microwave, for instance. This accidental invention was developed by engineer Percy Spencer who, upon experimenting with a microwave-emitting magnetron, found that the candy bar in his pocket had begun to melt. Spencer was then able to harness this radiation into the microwave we use today to make snack time a speedy process!

Perhaps one of the most well-known accidental inventions of today, the potato chip was born when a customer kept requesting that his french fries be sliced thinner and made crispier. Though chef George Crum responded with the chips as a joke, they quickly became a favorite snack around the world!

Even the match is a result of accidental invention. When pharmacist John Walker was stirring chemicals, he noticed that the end of his stirring stick had dried into a hardened lump. When attempting to scrape the dried residue off, a flame sparked, and so did Walker’s idea to turn this accident into a helpful tool!

So, the next time your science experiment doesn’t go as planned, or you burn what you have cooked on the stove, keep in mind that some of today’s most valued inventions were discovered when the inventor least expected it!

According to the passage, who invented the potato chip?

Every day it seems, new inventions surface that promise to add value to our day-to-day lives. But did you know, many of the inventions we interact with on a daily basis were developed completely by accident?

Take the microwave, for instance. This accidental invention was developed by engineer Percy Spencer who, upon experimenting with a microwave-emitting magnetron, found that the candy bar in his pocket had begun to melt. Spencer was then able to harness this radiation into the microwave we use today to make snack time a speedy process!

Perhaps one of the most well-known accidental inventions of today, the potato chip was born when a customer kept requesting that his french fries be sliced thinner and made crispier. Though chef George Crum responded with the chips as a joke, they quickly became a favorite snack around the world!

Even the match is a result of accidental invention. When pharmacist John Walker was stirring chemicals, he noticed that the end of his stirring stick had dried into a hardened lump. When attempting to scrape the dried residue off, a flame sparked, and so did Walker’s idea to turn this accident into a helpful tool!

So, the next time your science experiment doesn’t go as planned, or you burn what you have cooked on the stove, keep in mind that some of today’s most valued inventions were discovered when the inventor least expected it!

According to the passage, what was John Walker doing when a flame sparked and helped him to create the match?

Passage 1:

Graffiti - the public drawings and paintings that often cover surfaces of walls and other public structures - are often written off as an act of vandalism. However, the time has finally come when we begin to recognize graffiti for the art form it truly is.

Artists such as Banksy have shown us that graffiti can be a way to showcase not only one’s talent in the visual arts but also one’s political and social causes and stances. Some cities have even come to embrace graffiti to such an extent that they have commissioned works of art from these artists on the facades of public buildings.

Although graffiti began as an act of anarchy and rebellion, its contributions to society and the communities impacted by the art have seen positive responses that far outweigh the negatives. Graffiti is no longer a costly nuisance that should be immediately covered or removed, it has instead flourished to become an entirely new and unique art form with talent and renown that will eventually come to match the household names “Picasso” and “Michaelangelo” in stature.

Passage 2:

Though some might idolize graffiti as an act of admirable rebellion, this “art” causes nothing but negative impacts on its community. Those who would vandalize their streets and neighborhoods are no friend to the community. Instead, these criminals deface properties, decrease home values, and leave the community looking less pristine and cared for.

Such vandals also disregard the work put in by maintenance workers cleaning up after their messes and government officials attempting to create a better community for their citizens. While the work created by graffiti “artists” can sometimes be visually impressive, this does not outweigh the fact that what they have created is not art, but a crime against the community.

Popular graffiti “artists” auctioning work off for thousands of dollars apiece only perpetuate this trend. It is high time we put a stop to these criminal activities rather than glorifying them and allow true artists who follow city policies and stick to canvas or sculpture their due respect.

According to Passage 1, graffiti is often written off as what kind of an act?

Passage 1:

Graffiti - the public drawings and paintings that often cover surfaces of walls and other public structures - are often written off as an act of vandalism. However, the time has finally come when we begin to recognize graffiti for the art form it truly is.

Artists such as Banksy have shown us that graffiti can be a way to showcase not only one’s talent in the visual arts but also one’s political and social causes and stances. Some cities have even come to embrace graffiti to such an extent that they have commissioned works of art from these artists on the facades of public buildings.

Although graffiti began as an act of anarchy and rebellion, its contributions to society and the communities impacted by the art have seen positive responses that far outweigh the negatives. Graffiti is no longer a costly nuisance that should be immediately covered or removed, it has instead flourished to become an entirely new and unique art form with talent and renown that will eventually come to match the household names “Picasso” and “Michaelangelo” in stature.

Passage 2:

Though some might idolize graffiti as an act of admirable rebellion, this “art” causes nothing but negative impacts on its community. Those who would vandalize their streets and neighborhoods are no friend to the community. Instead, these criminals deface properties, decrease home values, and leave the community looking less pristine and cared for.

Such vandals also disregard the work put in by maintenance workers cleaning up after their messes and government officials attempting to create a better community for their citizens. While the work created by graffiti “artists” can sometimes be visually impressive, this does not outweigh the fact that what they have created is not art, but a crime against the community.

Popular graffiti “artists” auctioning work off for thousands of dollars apiece only perpetuate this trend. It is high time we put a stop to these criminal activities rather than glorifying them and allow true artists who follow city policies and stick to canvas or sculpture their due respect.

According to Passage 2, who do graffiti artists disregard the work of?

Adapted from White Fang by Jack London (1906)

Dark spruce forest frowned on either side the frozen waterway. The trees had been stripped by a recent wind of their white covering of frost, and they seemed to lean toward each other, black and ominous, in the fading light. A vast silence reigned over the land. The land itself was a desolation, lifeless, without movement, so lone and cold that the spirit of it was not even that of sadness. There was a hint in it of laughter, but of a laughter more terrible than any sadness -- a laughter that was mirthless as the smile of the Sphinx, a laughter cold as the frost and partaking of the grimness of infallibility. It was the masterful and incommunicable wisdom of eternity laughing at the futility of life and the effort of life. It was the Wild, the savage, frozen-hearted Northland Wild.

But there was life, abroad in the land and defiant. Down the frozen waterway toiled a string of wolfish dogs. Their bristly fur was rimed with frost. Their breath froze in the air as it left their mouths, spouting forth in spumes of vapor that settled upon the hair of their bodies and formed into crystals of frost. Leather harness was on the dogs, and leather traces attached them to a sled which dragged along behind. On the sled, securely lashed, was a long and narrow oblong box. There were other things on the sled -- blankets, an axe, and a coffee-pot and frying-pan; but prominent, occupying most of the space, was the long and narrow oblong box.

In advance of the dogs, on wide snowshoes, toiled a man. At the rear of the sled toiled a second man. On the sled, in the box, lay a third man whose toil was over, -- a man whom the Wild had conquered and beaten down until he would never move nor struggle again.

But at front and rear, unawed and indomitable, toiled the two men who were not yet dead. Their bodies were covered with fur and soft-tanned leather. Eyelashes and cheeks and lips were so coated with the crystals from their frozen breath that their faces were not discernible. This gave them the seeming of ghostly masques, undertakers in a spectral world at the funeral of some ghost. But under it all they were men, penetrating the land of desolation and mockery and silence, puny adventurers bent on colossal adventure, pitting themselves against the might of a world as remote and alien and pulseless as the abysses of space.

They travelled on without speech, saving their breath for the work of their bodies. On every side was the silence, pressing upon them with a tangible presence.

The pale light of the short sunless day was beginning to fade, when a faint far cry arose on the still air. It soared upward with a swift rush, till it reached its topmost note, where it persisted, palpitant and tense, and then slowly died away. It might have been a lost soul wailing, had it not been invested with a certain sad fierceness and hungry eagerness.

A second cry arose, piercing the silence with needlelike shrillness. Both men located the sound. It was to the rear, somewhere in the snow expanse they had just traversed. A third and answering cry arose, also to the rear and to the left of the second cry.

"They're after us, Bill," said the man at the front.

"Meat is scarce," answered his comrade. "I ain't seen a rabbit sign for days.”

At the fall of darkness they swung the dogs into a cluster of spruce trees on the edge of the waterway and made a camp. The coffin, at the side of the fire, served for seat and table. The wolf-dogs, clustered on the far side of the fire, snarled and bickered among themselves, but evinced no inclination to stray off into the darkness.

- - -

"Henry," said Bill, munching with deliberation the beans he was eating, "How many dogs 've we got, Henry?"

"Six."

"Well, Henry . . ." Bill stopped for a moment, in order that his words might gain greater significance. "As I was sayin', Henry, we've got six dogs. I took six fish out of the bag. I gave one fish to each dog, an', Henry, I was one fish short."

"You counted wrong."

"We've got six dogs," the other reiterated dispassionately. "took out six fish. One Ear didn't get no fish. I come back to the bag afterward an' got 'm his fish."

"We've only got six dogs," Henry said.

"Henry," Bill went on, "I won't say they was all dogs, but there was seven of 'm that got fish."

Henry stopped eating to glance across the fire and count the dogs.

"There's only six now," he said.

"I saw the other one run off across the snow," Bill announced with cool positiveness. "I saw seven.”

Bill opened his mouth to speak, but changed his mind. Instead, he pointed toward the wall of darkness that pressed about them from every side. There was no suggestion of form in the utter blackness; only could be seen a pair of eyes gleaming like live coals. Henry indicated with his head a second pair, and a third. A circle of the gleaming eyes had drawn about their camp.

Compared to the narrator’s prose, the dialogue of the characters in the text __________.

“Stone Trees”

Have you ever seen a stone tree? While the idea of a stone tree may sound fantastic, fallen trees can turn to stone in very specific circumstances, producing what scientists call “petrified wood.” “Petra” means stone in ancient Greek, so something “petrified” has been turned to stone. You may have heard the word “petrified” used to describe someone so scared that they have frozen as if turned to stone, but scientists use the word literally to refer to actual stone. Petrified trees are stone trees, not scared trees!

A Type of Fossil

Like ancient skeletons of dinosaurs and other organisms preserved in the earth, petrified wood is a type of fossil; however, there is a big difference between petrified wood and most fossils. Most fossils are imprints of creatures or partial remains of them, such as their skeletons. In contrast, the process of petrification recreates an entire preserved tree in stone. It’s very cool to see a petrified tree close-up, because it is still precisely life-size; you can get an idea of how big the tree was when it was alive, and even see individual tree cells that have been preserved. You can even count the tree rings in some petrified trees and estimate how old the tree grew to be before it was petrified.

From Tree to Stone

In order for a tree to become petrified wood, it must have died and been buried a very long time ago. This has to have happened in a specific environment, though, or petrified wood would not be so rare. The tree has to be buried in such a way that oxygen cannot get to its bark and wood. If oxygen can get to the tree, it will rot instead of turn to stone. 

The environment has to have two more specific characteristics to produce petrified wood: there has to be water in the ground around the tree, and that water has to contain minerals. If mineral-containing water is present, water will go into and out of the tree’s cells and, over time, the minerals in the water will accumulate in the tree’s cells. When the tree’s cells eventually decay, the minerals are left. Petrified wood can be a rainbow of different colors, with each color corresponding to different elements in the tree’s preserving environment that affect the color of the minerals that form its stone.

Petrified wood is found all over the world, and there are even entire forests of petrified trees that you can travel to go see today. One national park in the United States, Petrified Forest National Park in Arizona, is famous for its many petrified trees. The next time you see a tree, remember, after a few million years in the right environment, it could turn to stone!

Which of the following best describes the author’s purpose in this passage?

Passage 1:

Graffiti - the public drawings and paintings that often cover surfaces of walls and other public structures - are often written off as an act of vandalism. However, the time has finally come when we begin to recognize graffiti for the art form it truly is.

Artists such as Banksy have shown us that graffiti can be a way to showcase not only one’s talent in the visual arts but also one’s political and social causes and stances. Some cities have even come to embrace graffiti to such an extent that they have commissioned works of art from these artists on the facades of public buildings.

Although graffiti began as an act of anarchy and rebellion, its contributions to society and the communities impacted by the art have seen positive responses that far outweigh the negatives. Graffiti is no longer a costly nuisance that should be immediately covered or removed, it has instead flourished to become an entirely new and unique art form with talent and renown that will eventually come to match the household names “Picasso” and “Michaelangelo” in stature.

Passage 2:

Though some might idolize graffiti as an act of admirable rebellion, this “art” causes nothing but negative impacts on its community. Those who would vandalize their streets and neighborhoods are no friend to the community. Instead, these criminals deface properties, decrease home values, and leave the community looking less pristine and cared for.

Such vandals also disregard the work put in by maintenance workers cleaning up after their messes and government officials attempting to create a better community for their citizens. While the work created by graffiti “artists” can sometimes be visually impressive, this does not outweigh the fact that what they have created is not art, but a crime against the community.

Popular graffiti “artists” auctioning work off for thousands of dollars apiece only perpetuate this trend. It is high time we put a stop to these criminal activities rather than glorifying them and allow true artists who follow city policies and stick to canvas or sculpture their due respect.

Which of the following statements would the author of Passage 1 be most likely to disagree with?

Passage 1:

Graffiti - the public drawings and paintings that often cover surfaces of walls and other public structures - are often written off as an act of vandalism. However, the time has finally come when we begin to recognize graffiti for the art form it truly is.

Artists such as Banksy have shown us that graffiti can be a way to showcase not only one’s talent in the visual arts but also one’s political and social causes and stances. Some cities have even come to embrace graffiti to such an extent that they have commissioned works of art from these artists on the facades of public buildings.

Although graffiti began as an act of anarchy and rebellion, its contributions to society and the communities impacted by the art have seen positive responses that far outweigh the negatives. Graffiti is no longer a costly nuisance that should be immediately covered or removed, it has instead flourished to become an entirely new and unique art form with talent and renown that will eventually come to match the household names “Picasso” and “Michaelangelo” in stature.

Passage 2:

Though some might idolize graffiti as an act of admirable rebellion, this “art” causes nothing but negative impacts on its community. Those who would vandalize their streets and neighborhoods are no friend to the community. Instead, these criminals deface properties, decrease home values, and leave the community looking less pristine and cared for.

Such vandals also disregard the work put in by maintenance workers cleaning up after their messes and government officials attempting to create a better community for their citizens. While the work created by graffiti “artists” can sometimes be visually impressive, this does not outweigh the fact that what they have created is not art, but a crime against the community.

Popular graffiti “artists” auctioning work off for thousands of dollars apiece only perpetuate this trend. It is high time we put a stop to these criminal activities rather than glorifying them and allow true artists who follow city policies and stick to canvas or sculpture their due respect.

Which of the following statements would the author of Passage 2 be most likely to agree with?

Every day it seems, new inventions surface that promise to add value to our day-to-day lives. But did you know, many of the inventions we interact with on a daily basis were developed completely by accident?

Take the microwave, for instance. This accidental invention was developed by engineer Percy Spencer who, upon experimenting with a microwave-emitting magnetron, found that the candy bar in his pocket had begun to melt. Spencer was then able to harness this radiation into the microwave we use today to make snack time a speedy process!

Perhaps one of the most well-known accidental inventions of today, the potato chip was born when a customer kept requesting that his french fries be sliced thinner and made crispier. Though chef George Crum responded with the chips as a joke, they quickly became a favorite snack around the world!

Even the match is a result of accidental invention. When pharmacist John Walker was stirring chemicals, he noticed that the end of his stirring stick had dried into a hardened lump. When attempting to scrape the dried residue off, a flame sparked, and so did Walker’s idea to turn this accident into a helpful tool!

So, the next time your science experiment doesn’t go as planned, or you burn what you have cooked on the stove, keep in mind that some of today’s most valued inventions were discovered when the inventor least expected it!

According to the passage, the author would most likely agree that

Every day it seems, new inventions surface that promise to add value to our day-to-day lives. But did you know, many of the inventions we interact with on a daily basis were developed completely by accident?

Take the microwave, for instance. This accidental invention was developed by engineer Percy Spencer who, upon experimenting with a microwave-emitting magnetron, found that the candy bar in his pocket had begun to melt. Spencer was then able to harness this radiation into the microwave we use today to make snack time a speedy process!

Perhaps one of the most well-known accidental inventions of today, the potato chip was born when a customer kept requesting that his french fries be sliced thinner and made crispier. Though chef George Crum responded with the chips as a joke, they quickly became a favorite snack around the world!

Even the match is a result of accidental invention. When pharmacist John Walker was stirring chemicals, he noticed that the end of his stirring stick had dried into a hardened lump. When attempting to scrape the dried residue off, a flame sparked, and so did Walker’s idea to turn this accident into a helpful tool!

So, the next time your science experiment doesn’t go as planned, or you burn what you have cooked on the stove, keep in mind that some of today’s most valued inventions were discovered when the inventor least expected it!

Which of the following represents a view not held by the author?