TOEFL iBT | Speaking Evaluation | Speaking Q2 | Sculpture Class

Let this be a dose of self-awareness for a lot of you out there who are probably making the same mistake in regards to your speaking sections. My wonderful student, who I’m coaching, sent me one of her speaking evaluations.  Now, because it wasn’t up to par, I walk her through the entire process, break it down, show what she said, and gave her a huge amount of suggestions. If you guys are interested in speaking evaluations, let me know!

TOEFL iTP | Reading | Electromagnetic Raditation

Let’s get back into another reading! This one is a bit more difficult than the previous one, so you better brace yourself. Again, if anyone is interested in the Structure Course that I’ve launched already, click the link here to gain access to the page! If you buy after June 2nd, it will be $57 but you can purchase the Written Expression (debuts July 1st) for $27 (upsale). Nonetheless, let’s get into it!

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Although only a small percentage of electromagnetic radiation that is emitted by the Sun is ultraviolet (UV) radiation, the amount that is emitted would be enough to cause severe damage to most forms of life on Earth were it all to reach the surface of the Earth. Fortunately, all of the Sun’s ultraviolet radiation does not reach the Earth because of a layer of oxygen, called the ozone layer, encircling the Earth in the stratosphere at an altitude of about 15 miles above the Earth. The ozone layer absorbs much of the Sun’s ultraviolet radiation and prevents it from reaching the Earth.

Ozone is a form of oxygen in which each molecule consists of three atoms (O3) instead of the two atoms (O2) usually found in an oxygen molecule. Ozone forms in the stratosphere in a process that is initiated by ultraviolet radiation from the Sun. UV radiation from the Sun splits oxygen molecules with two atoms into free oxygen atoms, and each of these unattached oxygen atoms then joins up with an oxygen molecule to form ozone. UV radiation is also capable of splitting up ozone molecules; thus, ozone is constantly forming, splitting, and reforming, it is unable to reach Earth and cause damage there.

Recently, however, the ozone layer over parts of the Earth has been diminishing. Chief among the culprits in the case of the disappearing ozone, those that are really responsible, are the chloroflurocarbons (CFCs). CFCs meander up from Earth into the stratosphere, where they break down and release chlorine. The released chlorine reacts with ozone in the stratosphere to form chlorine monoxide (ClO) and Oxygen (O2). The chlorine then becomes free to go through the cycle over and over again. One chlorine atom can, in fact, destroy hundreds of thousands of ozone molecules in this repetitious cycle, and the effects of this destructive process are now becoming evident.

Longman
  1. According to the passage, ultraviolet radiation from the Sun
  1. Is causing severe damage to the Earth’s ozone layer
  2. Is only a fraction of the Sun’s electromagnetic radiation
  3. Creates electromagnetic radiation
  4. Always reaches the Earth
  • The word “encircling” in Line 5 is closest in meaning to
  1. Rotating
  2. Attacking
  3. Raising
  4. Surrounding
  • It is stated in the passage that the ozone layer
  1. Enables ultraviolet radiation to reach the Earth
  2. Reflects ultraviolet radiation
  3. Shields the earth from a lot of ultraviolet radiation
  4. Reaches down to the Earth
  • According to the passage, an ozone molecule
  1. Consists of three oxygen molecules
  2. Contains more oxygen atoms than the usual oxygen molecule does
  3. Consists of two oxygen atoms
  4. Contains the same number of atoms as the usual oxygen molecule
  • The word “free” in line 10 could best be replaced by
  1. Liberal
  2. Gratuitous
  3. Unconnected
  4. Emancipated
  • Ultraviolet radiation causes oxygen molecules to
  1. Rise to the stratosphere
  2. Burn up ozone molecules
  3. Split up and form as ozone
  4. Reduce the number of chloroflurocarbons
  • The pronoun “it” in line 13 refers to
  1. Radiation
  2. Process
  3. Formation
  4. Damage
  • The word “culprits” in line 16 closest in meaning to which of the following?
  1. Guilty parties
  2. Detectives
  3. Group members
  4. Leaders
  • According to the passage, what happens after a chlorine molecule reacts with an ozone molecule?
  1. The ozone breaks down into three oxygen atoms.
  2. Two different molecules are created
  3. The two molecules combine into one molecule.
  4. Three distinct molecules result
  1. Where in the passage does the author explain how much damage chlorine can do?
  1. Lines 1-3
  2. Lines 12-14
  3. Lines 18-19
  4. Lines 20-22
  1. The paragraph following the passage most likely discusses
  1. The negative results of the cycle of ozone destructions
  2. Where chloroflurocarbons (CFCs) come from
  3. The causes of the destruction of ozone molecules
  4. How electromagnetic radiation is created

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TOEFL iBT | Reading | Earth’s Age

Boom! We’re back with a tough reading, and I’ll be covering it for you guys! In today’s full reading segment, we have the infamous Earth’s Age write up which is a total kick-ass. Here we go!

[1] One of the first recorded observers to estimate Earth’s relative age was the Greek historian Herodotus, who lived from approximately 480 B.C. to 425 B.C. He realized that the Nile River Delta was in fact made up of a series of sediment deposits built up as a result of continuous floods. He noted that individual floods deposit only thin layers of sediment, and he was then able to conclude that the Nile Delta had taken thousands of years to build up. More important than Herodotus’s calculations of the Earth’s age, which are in fact trivial in comparison with the actual age of Earth, was the idea that one could estimate ages of geologic features by determining rates of the processes responsible for such features, and that it was possible to assume the rates to be roughly constant over time. Similar applications of this concept were used time and time again in later centuries to estimate the age of the formation of rocks, in particular, layers of sediment that had compressed and cemented to form sedimentary rocks.

[2] It wasn’t until the 17th century that any further attempts were made to understand clues to Earth’s history through the rock record. Nicolaus Steno (1638–1686) was the first to work out the principles of the progressive depositing of sediment in Tuscany. However, it was the founder of modern geology, James Hutton (1726–1797), who was the first to learn that geologic processes recur naturally, a key insight. Forces associated with subterranean heat cause land to be uplifted into plateaus and mountain ranges. The effects of wind and water then break down the masses of uplifted rock, producing sediment that is transported by water downhill to then form layers in oceans, lakes, or even seashores. With time, the layers then become sedimentary rock. These rocks are then uplifted in the future to form new mountain ranges, which exhibit sedimentary layers (and the remains of life within those layers) of the earlier episodes of erosion and deposition.

[3] Hutton’s idea thus represents an amazing insight because its discovery was able to unite many individual phenomena and observations into a conceptual picture of Earth’s history. With the further assumption that these geologic processes were generally no more or less vigorous than they are today, Hutton’s examination of sedimentary layers led him to the realization that Earth’s history must be colossal, that geologic time is an abyss and human history a speck by comparison.

[4] After Hutton, many geologists tried to determine rates of sedimentation so as to estimate the age of Earth from the total length of the sedimentary, or stratigraphic record. The numbers estimated for the age of Earth at the turn of the 20th century were 100 million to 400 million years. These numbers underestimated the actual age by factors of 10 to 50 because much of the sedimentary record is missing in various locations and because there is a long rock sequence that is older than half a billion years that is far less well defined in terms of fossils and less well preserved.

[5] A variety of other methods used to estimate the Earth’s age fell short, and could be seen as defective determinations of the Sun’s age. German philosopher Immanuel Kant (1724–1804) recognized that chemical reactions could not supply the tremendous amount of energy flowing from the Sun for more than about a millennium. The age of the Sun based on the Sun’s energy coming from gravitational contraction was discovered by two physicists in the 19th century. Due to the force of gravity, the compression resulting in an object’s collapse must release energy. Ages for Earth were derived that were in the tens of millions of years, much less than the geologic estimates of the time.

[6] It was the discovery of radioactivity at the end of the 19th century that resulted in finally determining both the Sun’s energy source and the age of Earth. From the discovery of radioactivity came a wave of discoveries leading to radioisotopic dating. This then led to the realization that Earth must be billions of years old, and finally to the discovery of nuclear fusion as an energy source capable of supporting the Sun’s luminosity for that amount of time. By the 1960s, both analyses of meteorites and refinements of solar evolution models came together to settle on an age for the solar system, and hence for Earth, of 4.5 billion years.

Questions

1 According to paragraph 2, James Hutton was the first person to

  • work out standards of the dynamic saving of silt.
  • understand that geologic processes occur in repeating cycles
  • show the power of Earth’s warm inner core
  • comprehend pieces of information to Earth’s history through the stone record.

2 Which of the following best expresses the essential information in the highlighted sentence? Incorrect answer choices change the meaning in important ways or leave out essential information.

With the further assumption that these geologic processes were generally no more or less vigorous than they are today, Hutton’s examination of sedimentary layers led him to the realization that Earth’s history must be colossal, that geologic time is an abyss and human history a speck by comparison.

  • Hutton understood that if these geologic procedures have dependably happened at about the same rate as they do today, Earth’s history is tremendously long compared to mankind’s.
  • Hutton’s idea revealed vast knowledge by bringing together numerous individual questions and ideas into a theoretical picture of Earth’s history
  • Hutton’s examination of aggregate layers caused him to infer that geologic processes have been by and large the same as they are today throughout Earth’s long history.
  • Hutton’s examination of clastic layers resulted in a breakthrough, and his decisions about geologic procedures are among the most noteworthy in mankind’s history

3 .As indicated by passage 4, what happened when geologists at the turn of the twentieth century attempted to gauge Earth’s age?

  • They disregarded Hutton’s discoveries about rates of sedimentation and by doing so their calculations were off by a factor of 10 to 50.
  • Utilizing the sedimentary record, they were able to figure Earth’s proper age within 100 million to 400 million years.
  • They didn’t realize that a great part of the sedimentary record is missing and in this way, believed that Earth was substantially younger than it is in reality.
  • They didn’t effectively ascertain the rates of sedimentation which caused them to incorrectly presume that the age of the Earth is considerably younger than it ought to be.

4 The word ‘defective’ in paragraph 5 is closest in meaning to:

  • broken
  • late
  • unspecific
  • incorrect

5 For what reason is ‘gravitational contraction’ used in the entry?

  • To demonstrate that inquiries concerning the Sun’s vitality source were as intriguing to early researchers as inquiries regarding Earth’s age
  • To give prove that Hutton’s thoughts prompted an in material science and stargazing and also in geography
  • To refer to a strategy for assessing the age of the Sun that was utilized to decide Earth’s age
  • To clarify why there is such a lot of vitality spilling out of the Sun

6 As indicated by paragraph 5, Immanuel Kant perceived that the Sun’s vitality

  • was not possible through chemical reactions alone over a long period of time.
  • originated from powerful pressure resulting from gravity.
  • was to a great extent the consequence of synthetic responses that occurred over a time of over a thousand years.
  • was important to fuel the greater part of the concoction responses on Earth

7 As indicated by passage 6, which of the following isn’t valid about researchers latest estimate of Earth’s age?

  • It depends on data taken from the examination of shooting stars.
  • It is shockingly similar to estimates from the nineteenth century.
  • It is affirmed by sun based development models.
  • It puts the period of Earth at around 4 5 billion years.

8 Which of the following can be inferred from paragraph 6 about the formation of the solar system?

  • The Sun was already billions of years old when the planets were formed.
  • The planets closest to the Sun formed first.
  • Meteorites entered the solar system sometime after the planets were formed.
  • All parts of the solar system formed at approximately the same time.

9 Examine the four █ in the selection below and indicate at which block the following sentence could be inserted into the passage:


This thought came to be known as the rule of uniformitarianism, and Herodotus was just the first to apply it.

One of the first recorded observers to estimate Earth’s relative age was the Greek historian Herodotus, who lived from approximately 480 B.C. to 425 B.C. █ [A] He realized that the Nile River Delta was in fact made up of a series of sediment deposits built up as a result of continuous floods. █ [B] He noted that individual floods deposit only thin layers of sediment, and he was then able to conclude that the Nile Delta had taken thousands of years to build up. █ [C] More important than Herodotus’s calculations of the Earth’s age, which are in fact trivial in comparison with the actual age of Earth, was the idea that one could estimate ages of geologic features by determining rates of the processes responsible for such features, and that it was possible to assume the rates to be roughly constant over time. █ [D] Similar applications of this concept were to be used time and time again in later centuries to estimate the age of the formation of rocks, in particular, of layers of sediment that had compressed and cemented to form sedimentary rocks..

  • [A]
  • [B]
  • [C]
  • [D]

10 Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points.

Deciding the period of Earth has been a troublesome issue ever of.

  •  
  •  
  •  
  • A.Herodotus endeavored to compute Earth’s age by watching residue stores, however, modem standards for evaluating Earth’s age from geologic procedures emerged from crafted by Steno and Hutton.
  • B.Gaps in the sedimentary record started to be perceived by Kant and were later clarified by physicists contemplating the amount of energy provided by the Sun.
  • C.Radio isotopic dating, made possible by the discovery of radioactivity, as well as the revelation of atomic fusion, cleared up misconceptions regarding as to Earth’s age and the source of the sun’s energy.
  • D. Hutton portrayed the impacts of wind and water on masses of inspired shake and was the first to propose that a significant part of the sedimentary record was missing because of disintegration.
  • E. Estimates of Earth’s age from the past were amazingly low in light of what we know today about the rates of geologic procedures, and evaluations of the Sun’s age and vitality source.
  • F. In the 1960s researchers moved from the investigation of shooting stars to refinements of sun-based advancement models and decided the age of the nearby planetary group to be no less than a billion years.

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TOEFL iTP | Listening | Part C | Clipper Ships

We’re back! It’s been SO LONG! Ha! The listening portion was on a hiatus, but with google rankings and blog views skyrocketing, I have some special treats for you coming. Today we’re going to be doing a Listening Part C with a comprehensive breakdown, so let’s get into it!

Questions

  1. In which course would this lecture probably be given?
  • water sports
  • physics
  • American history
  • psychology

2. What is the most likely meaning of the expression “to clip along?”

  • to cut
  • to move fast
  • to steer a boat
  • to build a ship

3. What were clipper ships first used for in the United States?

  • to bring tea from China
  • to transport gold to California
  • to trade with the British
  • to sail the American river system

4. What does the professor remind the students about?

  • a reading assignment
  • a quiz on Friday
  • a research paper for the end of the semester
  • some written homework

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Arsenio’s Business English Podcast | Season 6 | Investment | Tips for Saving Money

Here’s a pre-investment podcast — podcast — for all of you out there. I came across a very informational video that brought the spotlight on my money and finances, especially over the year.  As you probably know, shutdowns had begun early last year and the majority of the world was caught-off-guard, including me. So, instead of being proactive, I was reactive. I didn’t have an emergency fund of 3-6 months worth of rent saved up. I didn’t have travel expenses saved up, or even the stipend for a pretty expensive visa. So, I had to work in overdrive to cover expenses and that was three months of stress.

After watching this video and in the midst of the second shutdown, I’m very excited about the “how to” save for a rainy day. Tune into the podcast before we dive into the beginning stages of investing!

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