1.
Science is everywhere. It gives us the answers to all the questions and helps to understand the world around us. Scientific discoveries have made our life better. Let's have a look at some of them.
The Greatest Scientific Discoveries. Questions 1-10.
2.
In this part you will solve math problems about Albert Einstein. He was an ingenious scientist and a very interesting person.
3.
Extract 3. Internet.
4.
Task 2. Read the definitions of the greatest inventions, guess the words and write them in the box.
5.
Year 2019 is announced as the year of the Periodic Table. It was created by Dmitri Mendeleev 150 years ago. This discovery is a very important step in the development of Chemistry.
Physics, Chemistry and the Periodic Table of Elements. Questions 11-30.
6.
In this part you will demonstrate your Reading and Listening skills and knowledge of English vocabulary and grammar.
7.
8.
Extract 2. X-rays.
9.
Extract 1. Electricity.
10.
Sir Isaac Newton (1643-1727) was one of the greatest minds of all time. He was an astronomer, a mathematician, an alchemist, and a physicist. He created many laws that are still used today. Sir Isaac Newton taught the world many things about how the universe works.
Isaac was born in 1643 in Lincolnshire, England. As a young boy, Isaac went to a school called The Kings. Then he studied at Trinity College in Cambridge. Here, he developed something we know today as “calculus.” Calculus is defined as “the study of how things change,” and is a mathematical process. Newton was involved in the study of optics – he showed how a prism can reflect light and change white light into multicoloured light. He showed how a second prism and lens could change that coloured light back into white light. This important discovery led him to the creation of a refracting telescope, which is now known as a “Newtonian telescope.”
Perhaps the most important of all though, were Newton’s laws. He had discovered three laws.
Here they are:
1. Unless something is pushed or pulled, it will continue moving along a straight line or stay motionless. This is called inertia.
2. Pushing or pulling something affects how it will react.
3. If something is pushed or pulled, it will push or pull in the opposite way.
When Newton wrote these laws, he developed the theory of gravity. Using an apple, he made up an equation for what would happened when he dropped it.
He then applied this same principle to the universe: particularly, that the same equation he used for the apple, is also applied to the Moon, and to the Earth. He proved that the planets in our solar system are held in place by gravity.
Newton held the position of Chair of Mathematics at Cambridge for 33 years.
11.
Read some facts about Edwin Hubble and fill in the gaps in the sentences.
12.
You will hear 3 extracts about the greatest scientific discoveries. Listen and choose the correct answers.
13.
Thank you!
14.
The photograph shows some micro-organisms. What equipment is used to see them better? The first idea of this equipment was suggested by Dutch optical scientists Zacharias Janssen and Hans Lippershey.
Correct Answer
D. Microscope
Explanation
The correct answer is microscope. A microscope is used to see micro-organisms better. The first idea for this equipment was suggested by Dutch optical scientists Zacharias Janssen and Hans Lippershey.
15.
Many years ago people believed that the Sun orbited the Earth. In the 16th century a Polish astronomer proved that the Earth and other planets of the Solar system orbited the Sun. What was his name?
Correct Answer
C. Nikolas Copernicus
Explanation
Nikolas Copernicus is the correct answer because he was the Polish astronomer who challenged the belief that the Sun orbited the Earth. In the 16th century, Copernicus proposed the heliocentric model, which stated that the Earth and other planets orbit the Sun. This model revolutionized our understanding of the Solar system and laid the foundation for modern astronomy. Ptolemy, Galileo Galilei, and Archimedes were important figures in the history of science, but they did not make the groundbreaking discovery about the Earth's orbit around the Sun like Copernicus did.
16.
How long does it take for the Earth to make one full orbit around the Sun?
Correct Answer
D. One year
Explanation
The correct answer is one year because it takes approximately 365.25 days for the Earth to complete one full orbit around the Sun. This period of time is known as a year.
17.
Which of these sentences is true?
Correct Answer
A. The Sun does not move.
Explanation
The correct answer is "The Sun does not move." This sentence is true because the Sun appears to move across the sky due to the rotation of the Earth on its axis. However, in reality, the Sun remains relatively stationary in space and it is the Earth that revolves around the Sun in its orbit.
18.
What is the formula of water?
Correct Answer
A. H2O
Explanation
The formula of water is H2O. This is because water is composed of two hydrogen atoms bonded to one oxygen atom. The subscript 2 indicates that there are two hydrogen atoms present in the molecule.
19.
Where are X-rays used nowadays? Choose ALL the places mentioned by the speaker.
Correct Answer(s)
B. In hospitals
C. In airports
D. In hotels
Explanation
X-rays are used in hospitals, airports, and hotels. In hospitals, X-rays are commonly used for diagnostic purposes to examine bones and internal organs. In airports, X-ray machines are used to scan luggage and identify any prohibited or dangerous items. In hotels, X-ray machines may be used for security purposes to scan guests' bags and belongings. However, X-rays are not typically used in banks for everyday operations.
20.
What are the bad things about the electricity?
Correct Answer
C. It is bad for the environment and not save for people.
Explanation
The given answer states that electricity is bad for the environment and not safe for people. This is because electricity production often involves the burning of fossil fuels, which contributes to air pollution and climate change. Additionally, accidents or improper handling of electricity can pose risks to human safety, such as electrical shocks or fires. Therefore, the answer correctly identifies the negative impacts of electricity on both the environment and people's well-being.
21.
Choose the idea that was NOT mentioned by the speaker.
Correct Answer
C. Internet can be bad for people's health.
Explanation
The speaker mentioned that the Internet can help people to communicate and study, that it allows people to do things quicker, and that putting personal information on the Internet can be dangerous. However, the idea that was not mentioned by the speaker is that the Internet can be bad for people's health.
22.
Edwin Hubble (1889-1953) was an American astronomer ______ forever changed the way we look at the sky.
Correct Answer
A. Who
Explanation
The correct answer is "who" because it is used to refer to a person and in this case, it is referring to Edwin Hubble, the American astronomer who forever changed the way we look at the sky.
23.
He studied law at the university but he realized he was not happy _____ the profession of a lawyer. He wanted to study the night sky.
Correct Answer
A. With
Explanation
The correct answer is "with". This preposition is used to indicate the cause of someone's unhappiness or dissatisfaction. In this case, the person studied law at the university but realized that he was not happy with the profession of a lawyer. This suggests that the person did not find satisfaction or fulfillment in being a lawyer and wanted to pursue a different path, such as studying the night sky.
24.
Albert Einstein never wore socks. It was always a problem for him. Look at the picture and write the number of one odd sock.
Correct Answer
17
25.
Once Albert Einstein gave a lecture at the University of Zurich. Students presented at his lecture occupied 5/7 of all the seats. There were 540 people present. How many seats were there in the auditorium?
Correct Answer
B. 756
Explanation
If 5/7 of the seats were occupied by the students, then the remaining 2/7 of the seats were empty. We can set up a proportion to find the total number of seats in the auditorium. Let x represent the total number of seats. We can write the equation 5/7 = 540/x. Cross multiplying, we get 5x = 3780. Dividing both sides by 5, we find that x = 756. Therefore, there were 756 seats in the auditorium.
26.
Einstein's favourite toy was a compass. Once he was going south and then decided to turn 45' right. Which direction was he going now?
Correct Answer
D. South-west
Explanation
When Einstein was going south and then turned 45° right, he would be facing towards the west. Therefore, his direction would be south-west.
27.
Little Albert Einstein liked to play with cards arranging them in different patterns. If he has 23 cards at the moment and wants to arrange them in 6 rows, what is the smallest number of additional cards he should use in order to be able to arrange the cards this way?
Correct Answer
A. 1
Explanation
In order to arrange the cards in 6 rows, each row should have the same number of cards. Since 23 is not divisible by 6, Albert needs to add an additional card to the existing 23 cards to make them divisible by 6. This way, he will have 24 cards and can arrange them evenly in 6 rows of 4 cards each. Therefore, the smallest number of additional cards he should use is 1.
28.
Albert Einstein often travelled from Switzerland to the USA. These thermometers show the temperatures, in °C, in Bern and New York on one day. How many degrees colder was it in New York than in Bern?
Correct Answer
B. 11°Ð¡
Explanation
The question asks how many degrees colder it was in New York than in Bern. The temperature in Bern is not given, so we cannot determine the exact temperature difference. However, the answer choices provide options for the temperature difference. Since the correct answer is 11°Ð¡, it means that the temperature in New York was 11 degrees colder than in Bern.
29.
Chemistry is ____________ .
Correct Answer
A. A science of substances and their properties.
Explanation
The correct answer is "a science of substances and their properties." This answer accurately describes the field of chemistry, which focuses on the study of different substances, their composition, structure, properties, and the changes they undergo during chemical reactions. Chemistry is not limited to living things or everything beyond Earth, but rather encompasses the study of all types of matter and its interactions.
30.
In his Periodic Table Dmitri Mendeleev placed all the ... known at that time.
Correct Answer
A. Elements
Explanation
Dmitri Mendeleev placed all the elements known at that time in his Periodic Table.
31.
We're using electricity all the time, even if we're not thinking about it. Who discovered electricity?
Correct Answer
B. Benjamin Franklin
Explanation
Benjamin Franklin is credited with discovering electricity through his famous kite experiment in 1752. He flew a kite with a metal key attached to it during a thunderstorm and observed that the key attracted sparks from a Leyden jar, proving that lightning is a form of electricity. This experiment laid the foundation for understanding electricity and its practical applications. Franklin's discoveries and experiments greatly contributed to the development of the field of electricity and led to numerous advancements in technology.
32.
Which is an irreversible (необратимое) change?
Correct Answer
A. Burning candle
Explanation
An irreversible change refers to a process that cannot be reversed or undone. When a candle burns, it undergoes a chemical reaction called combustion, where the wax reacts with oxygen to produce heat, light, carbon dioxide, and water vapor. Once the candle has burned, it cannot be restored to its original form. Therefore, burning a candle is an example of an irreversible change.
33.
In 1909 Walter Baker invented an electric car. It was powered by batteries. Why are electric cars popular now?
Correct Answer
C. They are good for ecology.
Explanation
Electric cars are popular now because they are good for ecology. With increasing concerns about climate change and air pollution, people are turning to electric cars as a more environmentally friendly alternative to traditional gasoline-powered vehicles. Electric cars produce zero tailpipe emissions, reducing air pollution and greenhouse gas emissions. Additionally, they also contribute to the conservation of natural resources as they can be powered by renewable energy sources such as solar or wind power.
34.
Electricity is the flow of _________ .
Correct Answer
B. Electrons
Explanation
Electricity is the flow of electrons. Electrons are negatively charged particles that move through conductive materials, creating an electric current. Neutrons and protons are particles found in the nucleus of an atom and do not participate in the flow of electricity. Therefore, the correct answer is electrons.
35.
21% of the air is _________ .
Correct Answer
A. Oxygen
Explanation
Oxygen is the correct answer because it is the second most abundant gas in the Earth's atmosphere, making up about 21% of the air. Nitrogen is the most abundant gas, making up about 78% of the air. Hydrogen and argon are present in much smaller amounts in the atmosphere.
36.
One of Hubble’s _________ achievements was that he proved that there are other galaxies in the sky.
Correct Answer
B. Most famous
Explanation
Hubble's most famous achievement was proving the existence of other galaxies in the sky. This discovery revolutionized our understanding of the universe and paved the way for further exploration and research in the field of astronomy.
37.
Not only did Edwin find more galaxies, but he also developed a classification system for______.
Correct Answer
C. Them
Explanation
Edwin not only found more galaxies but also developed a classification system for them. The pronoun "them" refers back to the galaxies that Edwin discovered.
38.
He sorted them by content, distance, shape, and brightness and formed Hubble’s Law in 1929.
He achieved _____ scientific success, although at the time astronomy was not a widely respected science.
Correct Answer
C. Much
Explanation
Hubble achieved much scientific success, although at the time astronomy was not a widely respected science. Sorting celestial objects by content, distance, shape, and brightness and forming Hubble's Law in 1929 was a significant accomplishment in the field of astronomy. Despite the lack of recognition for astronomy as a respected science during that time, Hubble's contributions were highly valuable and marked a major advancement in our understanding of the universe.
39.
What is the melting point of water? ​​​​​​​
Correct Answer
C. 0°C
Explanation
Water melts at 0°C. This is the temperature at which water transitions from a solid state (ice) to a liquid state. At temperatures below 0°C, water remains in its solid form, while at temperatures above 0°C, it exists as a liquid. The melting point of water is a well-known and commonly studied property, as it is an essential factor in various scientific and everyday applications.
40.
It was invented by Blaise Pascal in 1642. Now it is an electronic device used for doing mathematical processes such as adding, subtracting, etc.
________
Correct Answer
a calculator, calculator
Explanation
Blaise Pascal invented the calculator in 1642, which is now an electronic device used for mathematical processes like addition and subtraction. The correct answer is "a calculator" or simply "calculator."
41.
It was invented by Henry W. Seeley in 1882. We use it to make our clothes flat and smooth.
________
Correct Answer
an iron, iron
Explanation
The correct answer is "an iron, iron" because an iron is a household appliance that is used to remove wrinkles and make clothes flat and smooth. It was invented by Henry W. Seeley in 1882. The word "iron" is used twice in the answer, first as an article (an) and then as the actual object being referred to.
42.
It was invented by John Atanasoff in 1939. It is an electronic machine that is used for storing, organizing, and processing the information.
________
Correct Answer
a computer, Computer
Explanation
The correct answer is "a computer" or "Computer". This is because the statement mentions that it was invented by John Atanasoff in 1939 and describes it as an electronic machine used for storing, organizing, and processing information. This matches the definition of a computer, which is a device that performs various tasks by processing information electronically.
43.
Einstein recorded the number of his experiments. What is the mode (the most frequent value) of his data?
Correct Answer
A. 2
Explanation
The mode of Einstein's data is 2 because it is the most frequent value in his recorded experiments.
44.
Einstein's first laboratory in Bern was very small - 8 m long and 3 m wide. What was the perimeter of the laboratory?
Correct Answer
C. 22 m
Explanation
The perimeter of a rectangle is calculated by adding up the lengths of all its sides. In this case, the length of the laboratory is given as 8 m and the width is given as 3 m. To find the perimeter, we add twice the length to twice the width. So, 2(8 m) + 2(3 m) = 16 m + 6 m = 22 m. Therefore, the perimeter of the laboratory is 22 m.
45.
Albert Einstein didn't drive a car and often travelled by bus. Once there were 27 people on the bus. The ratio of women to men was 5 : 4 How many women were there on the bus?
Correct Answer
D. 15
Explanation
Since the ratio of women to men on the bus is 5:4, we can determine the total number of women by dividing the total number of people on the bus (27) by the sum of the ratio's terms (5+4). This gives us a ratio multiplier of 3. Therefore, there were 5 women on the bus (5 x 3 = 15).
46.
Sir Isaac Newton was born in ________ .
Correct Answer
A. 1643
Explanation
Sir Isaac Newton was born in 1643.
47.
Newton was born in ________ .
Correct Answer
C. England
Explanation
Newton was born in England. This is evident from the given options where Austria and Germany are incorrect choices. England is the correct answer as it is the birthplace of Sir Isaac Newton, a renowned physicist and mathematician.
48.
The gravity of an object depends on its __________ .
Correct Answer
B. Mass
Explanation
The gravity of an object depends on its mass because mass is a measure of the amount of matter in an object. The more mass an object has, the stronger its gravitational pull. This is why larger objects, such as planets or stars, have stronger gravitational forces than smaller objects. Speed and acceleration do not directly affect gravity, while size is not a precise measure of an object's mass.
49.
Motion is another great discovery in Physics. Who discovered the three laws of motion and explained how gravity works?
Correct Answer
A. Isaac Newton
Explanation
Isaac Newton is the correct answer because he is the scientist who discovered the three laws of motion and explained how gravity works. Newton's laws of motion describe the relationship between the motion of an object and the forces acting upon it. His law of universal gravitation explains how every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
50.
Is it true that gravity helps the Earth to stay in orbit around the Sun?
Correct Answer
A. True
Explanation
Gravity is the force of attraction between two objects with mass. In the case of the Earth and the Sun, gravity is what keeps the Earth in orbit around the Sun. The gravitational pull of the Sun keeps the Earth moving in a curved path, preventing it from flying off into space. Without gravity, the Earth would not be able to maintain its orbit around the Sun. Therefore, it is true that gravity helps the Earth to stay in orbit around the Sun.