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L a G r a n E n c
i c l o p e d i a I l u s t r a d a d e l P r o y e c t o S a l ó
n H o g a r
Chapter:12 Columbian Exchange
Read the passage. Then answer questions about the passage below.
Proyecto Salón Hogar
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The Columbian Exchange was the
“exchange of plants, animals, foods, human populations (including
slaves) communicable diseases, and ideas between the Eastern and
Western hemispheres that occurred after 1492.
The term “Columbian Exchange,” coined in 1972 by historian
Alfred Crosby, took hold and became not only standard shorthand
for the phenomenon which it exemplified, but also a perspective
for witnessing societal and ecological events.
When Christopher Columbus made landfall with his crew in the
Bahamas in October 1492, two worlds with separate evolutionary
histories met. When Europeans began to settle America’s east
coast, they brought with them and cultivated familiar crops –
wheat and apples – as well as familiar weeds, such as dandelion
and chickweed.
In the 1600s, they introduced cattle and horses, which flourished
in the New World climate. Devastating diseases were introduced
to the American population which had no resistance to them.
John R. McNeill, professor of history at Georgetown University,
points out that “when the first inhabitants of the Americas
arrived across the Bering land bridge between 20,000 and 12,000
years ago, they brought few diseases with them … they had no
domesticated animals, the original source of human diseases such
as smallpox and measles.
In addition, as they passed from Siberia to North America, the
first Americans had spent many years in extreme cold, which
eliminated many of the disease-causing agents that might have
traveled with them.”
Consequently, between 1492 and 1650, over 90% of the Native
American population died in epidemic after epidemic of smallpox,
measles, mumps, whooping cough, influenza, chicken pox, and
typhus.
The loss of labor caused by pathogens indirectly led to the
establishment of African slavery among European immigrants in
the Americas, resulting in the importation of malaria and yellow
fever from Africa, causing even more destruction of the Native
American population.
The export of American flora and fauna did not revolutionize the
Old World as the influx of European agriculture altered the New
World ecosystem.
According to Crosby, “the New World’s great contribution to the Old
is in crop plants. … Maize, white potatoes, sweet potatoes,
various squashes, chiles, and manioc” augmented and invigorated
the European cuisine.
Very few New World creatures traversed the ocean –– the muskrat,
the gray squirrel, and a few others, but they did not
precipitate large scale changes in Old World ecosystems.
Although some diseases made the ocean voyage from New World to Old,
they did not have appreciable effects on the European
population. Crosby stated that, although some deaths were
attributed to ailments from America, “The total is insignificant
compared to Native American losses to smallpox alone.”
In Crosby’s original work, he eschewed ideological statements. He
reminded his readers that neither the Old nor New World was
inferior or superior to the other; the encounter between two
worlds was fundamentally an exchange. By 1988, he summarized his
long view of the encounter in this way:
“My point is … that the impact of the Encounter is so massive that
we should consider it with the same sense of scale as we do
events connected with the endings and beginnings of the
geological periods and eras and their influence on the direction
of evolution on the planet.”
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Questions
1. Which of the following best describes the author’s view of
the Columbian Exchange?
I) Neither the Old World nor the New World was superior to the
other.
II) The New World experienced the brunt
of the encounter between the Old and New Worlds.
III) The encounter between the Old and
New Worlds was fundamentally an even exchange.
A) I only
B) II only
C) III only
D) I and II only
E) II and III only
2. It can be inferred from the passage
that..
A) Slaves brought to American from Africa had more resistance to
European diseases than Native Americans did.
B) New World creatures were
unable to thrive in the climate of the Old World.
C) New World pathogens had
no effect on the people of the Old World.
D) Most human diseases were
introduced to humans by animal populations.
E) Europeans had more
resistance to European diseases than Africans did.
3. Eschewed most closely means
A) espoused
B) avoided
C) employed
D) created
E) discovered
4. What are some crops produced?
A) green beans and rice
B) wheat and apples
C) grapes and wheat
D) corn and potatoes
E) cotton and cabbage
5. The
term “Columbian Exchange,” was created by which historian?
A) John R. McNeill B)
Christopher Columbus C)
Richard Beasley D) Alfred
Crosby E) Ricardo Barbosa |
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Hubble
The 32,000–word
novella The Time Machine by H.G. Wells, published in 1895, is
generally credited with popularizing the idea of time travel by
means of a time machine, a vehicle which takes the occupant
backward or forward in time. Dozens of sequels
and adaptations over the years have further promoted the notion.
Indeed, Albert Einstein’s Theory of Special Relativity lays the
foundation for the possibility of time travel.
So far, no one has demonstrated the ability to travel in time.
However, time machines have been constructed, and they do allow
glimpses into the past. The most efficacious time machine
currently in existence is the Hubble Telescope, named after the
American astronomer Edwin P. Hubble. Its
capability to locate distant astronomical targets and lock in on
them, permitting their faint light to aggregate on its
detectors, allows it to peer far into the past. Light travels
186,000 miles per second. The Hubble Telescope has looked back
in time at 10,000 galaxies whose light left them billions of
years ago.
Therefore, utilizing the telescope as time machine, astronomers are
able to contemplate galaxies as they were eons ago. Although the
telescope was launched into space in 1990, its inception was
almost a half–century earlier as astronomer Lyman Spitzer, Jr.
mulled over the possibility of a large space telescope in a 1946
report, “Astronomical Advantages of an Extra–Terrestrial
Observatory.”
Because the earth is bathed in its constantly churning atmosphere,
earth–based telescopes cannot penetrate deep space; the
atmosphere distorts the view.
Telescopes were constructed on mountains, but there was still no
way to wholly escape the effects of the layers of gases
enveloping the earth. During the 1960s, the Space Race between
the then–Soviet Union and the United States was accelerating.
The National Aeronautics and Space Administration (NASA) was
established. Funds for space endeavors were abundant, and plans
for a large space telescope, by then designated the LST, were
underway. The designs called for a 2.4–meter primary telescope
mirror which could be transported into space by one of NASA’s
rockets.
According to National Geographic’s Imaging Space and Time, the
resolving power of the deep space telescope would be “equivalent
to being able to distinguish the left and right headlights of a
car in California seen from New York, or features less than
1/30,000th the size of the full moon.
This was at least a tenfold increase over the atmospheric limit.”
One of the primary challenges involved in successfully
transporting the telescope into space was protecting the mirror
from the jarring vibrations that occur during launch. |
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It was crucial that the mirror be able to withstand the
shuttle’s vicissitudes as well as the volatile atmospheric
conditions found in space. If not, the precise shape of the
mirror could be compromised, and its imaging capability
significantly weakened.
After the telescope had been launched,
astronomers subsequently realized that the primary mirror had
not been ground correctly. A lens in the test instrument was
about one millimeter askew, which is large by optical standards.
In 1993, space–walking astronauts installed
corrective lenses which improved the eyesight of the Hubble. In
2009, the corrective lenses themselves were replaced with a
supersensitive spectrograph with built–in corrective lenses. The
new spectrograph is expected to provide insight into the origins
of stars and galaxies.
The successor to Hubble, the James
Webb Space Telescope, is expected to be launched in 2014. It
will observe only in infrared, so it will complement the Hubble
Telescope, which observes in the visible and ultraviolet light
ranges.
Hubble currently has the capability to view
galaxies that were formed 13.7 billion years ago, long before
humans existed, in an area called the Hubble Ultra Deep Field.
Astronomers aspire to see beyond the Hubble Ultra Deep Field to
a time that is devoid of galaxies, a time before galaxies had
formed.
If H.G. Wells was onto something in his novella,
that time may be close at hand. As one of the characters in the
popular work asked, “If Time is really only a fourth dimension
of Space, why is it, and why has it always been, regarded as
something different?
And why cannot we move in Time as we move about
in the other dimensions of Space?” Less than a decade after
Wells’ novella, Einstein’s Special Theory Relativity seemed to
concur with Wells’ character by proposing that traveling through
space at the speed of light would alter time by causing it to
dilate, raising the possibility of not merely glimpsing the
past, but perhaps traveling to it.
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Questions
1. According to the passage, which of the following
statements is/are true of the Hubble Telescope?
I) It is unable to observe light on the infrared part of
the spectrum.
II) It will be replaced by the James Webb Space
Telescope in 2014.
III) It was initially constructed in 1946, but not
launched until 1990.
A) I only
B) II only
C) III only
D) I and II only
E) II and III only
2. According to the passage, who had the idea for the
Hubble Telescope?
A) H.G. Wells
B) Albert Einstein
C) Lyman Spitzer, Jr.
D) Edwin P. Hubble
E) James Webb
3. Vicissitudes most closely means
A) long delays which may compromise the shuttle launch
B) toxic emissions which may cause
corrosion around the mirror
C) sound waves which may penetrate the
mirror
D) atmospheric conditions which may
compromise the mirror
E) shaking and quivering which may cause
changes in the mirror
4. In the context of the passage, which of the
following best articulates the author’s opinion of the
inception of the Hubble?
A) It was a pipedream with little imminent chance of success.
B) It was a literary vehicle with little
basis in reality.
C) It was an emergency response to the
quickening Space Race.
D) It was based on a scientific
proposition which was not proven.
E) It was a waste of time and money
which were needed elsewhere.
5. The primary purpose of the passage is to...
A) draw a comparison between H.G. Wells’ notion of time travel with
Albert Einstein’s Special Theory of Relativity.
B) discuss the construction of the
Hubble Space Telescope as a tool for exploring deep
space.
C) examine difficulties which
precipitated construction of corrective lenses for the
Hubble’s primary mirror.
D) describe the circumstances which
underlay the mid–century national drive toward a large
space–based observatory.
E) dispute the argument that the Hubble
Telescope functions as a modern–day time machine.
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6.
It can be inferred that the author regards time travel as...
A) an effective hook for a work of fiction, but an improbability in
the reality of astronomy.
B) an
interesting literary notion, but proven to be impossible by
Einstein’s Special Theory.
C) a
persuasive topic in fiction, as well as a hypothetical
possibility in light of Einstein’s Special Theory.
D) a
ridiculous idea whose time has come and gone, as well as an
astronomical improbability.
E) the
incoherent literary construction of a fictional author, with
little relevance to today’s scientific community.
7. It can be inferred from the passage that scientists believe
that time is...
A) a constant.
B)
unidirectional.
C) a spatial
dimension.
D) an
impenetrable mystery.
E) an
imaginary construction.
Grammar: Simple Past
and Simple Present Tense
What is the simple past
and the simple present tense of a verb?
The simple past tense refers to an action, a situation,
or an event that began and ended in the past.
It is sometimes called the
preterit tense.
Though several tenses refer
to the past, the simple past tense is the most common.
The simple past tense
is used when: The event is in the past.
The event is completely finished.
The simple past tense of a
regular verb is formed by adding -d or -ed to the verb.
Examples: [ like – liked] [work – worked]
The simple past tense of an irregular verb varies.
You must memorize the irregular verbs or look them up in a
reference book.
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The simple present tense of a
verb is used for general statements and to express habitual or
everyday activities.
When it is used for general statements,
the simple present tense shows that something was true in
the past, is true in the present, and will probably be true in
the future.
It expresses events or situations that
always exist; they exist now, they have existed in the past, and
they will probably exist in the future.
Example: I have
brown eyes.
Here are some guidelines:
s |
add -es |
He passes. |
z |
add -es |
She dozes. |
sh |
add -es |
She wishes. |
ch |
add -es |
He watches. |
consonant + y |
change y to i and add
es |
It
flies. |
most
other cases |
add s |
He
sings. |
Write the simple present tense of
each verb in parentheses.
1. The girl ____________ (like)
listening to stories.
2. The teacher ____________ (expect)
all the students to sing with her.
3. Lorenzo and Judith ___________
(host) the PTA show.
4. The children ___________ (play)
while the teachers chat.
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A. Underline the verb in each sentence.
1. I want to learn English.
2. Lorenzo repeated like a
parrot what the teacher said.
3. I study everyday.
4. The school was painted
yellow with a green trim.
5. My mother braided my
hair this morning.
B. Circle the simple present tense verb
that completes each sentence.
1. My cousins (like, likes) going to the kiosk every afternoon.
2. We (drinks, drink) the
delicious piraguas he (make, makes).
3. I always (asks, ask) for
a lemon piragua. It is my favorite.
4. After the drinks the
owner of the kiosk (gives, give) us some treats and we (go,
goes) back home.
C. Circle the verb in each sentence and classify it as regular
(R) or irregular (I).
__ 1. I went to Segundo Ruiz Belvis Elementary School.
__ 2. My cousins and I
spent the summer playing and listening to stories.
__ 3. My mother wanted me
to learn Spanish.
__ 4. I was looking for
something in my book bag.
__ 5. Lorenzo helped the
teacher in the classroom.
__ 6. We all shared our
things during recess.
D. Rewrite the sentences using the
simple past tense.
1. My baby brother stays home.
____________________________________________________________
2. The girls use stiff,
uncomfortable uniforms.
____________________________________________________________
3. I miss my freedom.
____________________________________________________________
4. I know there will be no
games once school starts.
____________________________________________________________
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Vocabulary: Sentence Completion
Directions: Choose the best word to complete each sentence.
1) I like _______ soccer.
A. to play
B. to eat
C. to sing
D. to make
2) I like _______ chicken.
A. to eat
B. to play
C. to make
D. to talk
3) I like _______ songs.
A. to eat
B. to run
C. to sing
D. to cook
4) She likes _______ movies.
A. to talk
B. to watch
C. to sing
D. to jump
5) He likes _______ at parties.
A. to sleep
B. to watch
C. to make
D. to dance
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6) We want _______ water.
A. to cook
B. to drink
C. to work
D. to walk
7) They want _______ to the mall.
A. to go
B. to make
C. to cook
D. to talk
8) You like _______ new people.
A. to sleep
B. to read
C. to cook
D. to meet
9) Jason likes ______ to people.
A. to look
B. to cook
C. to sleep
D. to talk
10) Molly is tired. She wants _______.
A. to sing
B. to walk
C. to sleep
D. to work
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