- •2. Find the Ukrainian equivalents for the following English and word combinations:
- •3. Analyze the following words and translate them, paying attention to the negative prefixes:
- •4. Read the text and translate it: Video camera
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Put the questions to the following sentences:
- •7. Match the first part (1-8) of the sentence with the second part (a-f):
- •8. Read the supplementary text, translate and entitle it:
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-8) of the sentence with the second part (a-h):
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Put the questions to the following sentences:
- •7. Match the first part (1-8) of the sentence with the second part (a-h):
- •8. Read the supplementary text, translate and entitle it:
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Say if the following statements are true or false:
- •4. Put the questions to the following sentences:
- •5. Complete the following sentences:
- •6. Match the first part (1-8) of the sentence with the second part (a-h):
- •7. Read the supplementary text, translate and entitle it:
- •8. Work in pairs. State the advantages and disadvantages of dtv and analog tv.
- •9. Render the text: tv goes digital.
- •Fill in the blanks confusing words and memorize them:
- •2. Find the Ukrainian equivalents for the following English and word combinations:
- •3. Match two parts of word combinations:
- •4. Read the text and translate it: Computer crime
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-9) of the sentence with the second part (a-I):
- •7. Render the text: Computer crime
- •8. Work in pairs. How do you defend your computer?
- •9. Read the supplementary text, translate and entitle it:
- •1. Fill in the blanks confusing words and memorize them:
- •2. Find the Ukrainian equivalents for the following English words and word
- •3. Translate the following words and word combinations into English:
- •4. Read the text and translate it: An antenna
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-7) of the sentence with the second part (a-g):
- •7. Read the supplementary text, translate and entitle it:
- •8. Render the text: An antenna
- •9. Work in pairs. Compare the two kinds of antennas.
- •2. Find the Ukrainian equivalents for the following English words and word
- •3. Which of these words from the list are similar in your language? Do they mean the same?
- •4. Read the text and translate it: a Laser
- •Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences, using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-5) of the sentence with the second part (a-e) :
- •7. Read the supplementary text, translate and entitle it:
- •8. Render the text: Laser
- •1. Choose the right word: Say, tell, speak, talk
- •2. Find the Ukrainian equivalents for the following English and word combinations:
- •3. Match two parts of word combinations:
- •4. Read the text and translate it: Electronic Devices for the home.
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-7) of the sentence with the second part (a-g):
- •7. Read the text, translate and entitle it.
- •1. Put the words in order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-7) of the sentence with the second part (a-g):
- •7. Read the supplementary text, translate and entitle it.
- •8. Render the text: How Burglar Alarms Work
- •1. Fill in the blanks confusing words and memorize them:
- •2. Find the Ukrainian equivalents for the following English words and word combinations:
- •3. Translate the following words and word combinations into English:
- •4. Read the text and translate it: ir Remote Control Theory.
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-7) of the sentence with the second part (a-g) :
- •7. Read the supplementary text, translate and entitle it.
- •8. Render the text: ir Remote Control Theory.
- •1. Find the mistake(s) in each sentence and correct the confusing word:
- •2. Find the Ukrainian equivalents for the following English words and word
- •4. Which of these words from the list are similar in your language? Do they mean the same?
- •5. Read the text and translate it: Radar
- •1. Put the words in the right order to make a sentence:
- •2. Fill in the blanks with the following words:
- •3. Complete the following sentences using active vocabulary:
- •4. Say if the following statements are true or false:
- •5. Answer the following questions:
- •6. Match the first part (1-7) of the sentence with the second part (a-g) :
- •7. Read the supplementary text, translate and entitle it:
- •The scheme of rendering the text
- •In conclusion the author … The article ends with…
- •As far as I know already…
- •I’ve read before many/some/articles on the topic.
- •6. This information is useful for…
4. Say if the following statements are true or false:
1. The radar dish, or antenna, transmits pulses of radio waves or microwaves which bounce off any object in their path. 2. The weak absorption of radio waves by the medium through which it passes is what enables radar sets to detect objects at relatively-long ranges. 3. Radar receivers are usually, but not always, in the different location as the transmitter. 4. The radar signals that are not reflected back towards the transmitter are the desirable ones that make radar work. 5. There are weather conditions under which radar works well regardless of the weather. 6. Such things as fog, clouds, rain, falling snow, and sleet that block visible light are not usually transparent to radio waves. 7. The object returns a tiny part of the wave's energy to a dish or antenna which is not usually located at the same site as the transmitter. 8. If the object is moving either closer or farther away, there is a slight change in the frequency of the radio waves, due to the Doppler effect. 9. When these come into contact with an object they are usually reflected and/or scattered in many directions. 10. Although the reflected radar signals captured by the receiving antenna are usually very weak, these signals can’t be strengthened by the electronic amplifiers that all radar sets contain.
5. Answer the following questions:
1. What things are usually transparent to radio waves? 2. Are there weather conditions under which radar works well regardless of the weather? 3. What is a radar? 4. What transmits pulses of radio waves or microwaves which bounce off any object in their path? 5. Does a radar system have a transmitter or a receiver that emits radio waves called radar signals in predetermined directions? 6. Who coined the term RADAR? 7. In what year was the term Radar coined? 8. Was Practical radar developed in secrecy during World War II or World War I by Britain and other nations? 9. Where are radar receivers located? 10. What radar receivers are the desirable ones that make radar work?
6. Match the first part (1-7) of the sentence with the second part (a-g) :
1. Phase in waves is …
2. Antenna array is …
3. An azimuth (pronounced /ˈæzɪməθ/ ( listen)) (from Arabic السمت (as‑simt), meaning "direction") is … in a spherical coordinate system.
4. Frequency is …
5. Electronic noise is…
6. The radar dish …
7. Radar signals…
a) … the number of occurrences of a repeating event per unit time.
b) … an angular measurement
c) …a random fluctuation in an electrical signal, a characteristic of all electronic circuits.
d) … a group of isotropic radiators such that the currents running through them are of different amplitudes and phases.
e) …the fraction of a wave cycle which has elapsed relative to an arbitrary point.
f) … are reflected especially well by materials of considerable electrical conductivity.
g) … transmits pulses of radio waves or microwaves which bounce off any object in their path.
7. Read the supplementary text, translate and entitle it:
A phased array is a group of antennas in which the relative phases of the respective signals feeding the antennas are varied in such a way that the effective radiation pattern of the array is reinforced in a desired direction and suppressed in undesired direction. Phased array transmission was originally developed in 1905 by Nobel Laureate Karl Ferdinand Braun who demonstrated enhanced transmission of radio waves in one direction. An antenna array is a multiple of active antennas coupled to a common source or load to produce a directive radiation pattern. Usually the spatial relationship also contributes to the directivity of the antenna. Use of the term "active antennas" is intended to describe elements whose energy output is modified due to the presence of a source of energy in the element or an element in which the energy output from a source of energy is controlled by the signal input.
Phased array radar systems are also used by warships of many navies. Phased array radars allow a warship to use one radar system for surface detection and tracking (finding ships), air detection and tracking (finding aircraft and missiles) and missile uplink capabilities. Prior to using these systems, each surface-to-air missile in flight required a dedicated fire-control radar, which meant that ships could only engage a small number of simultaneous targets. Phased array systems can be used to control missiles during the mid-course phase of the missile's flight. During the terminal portion of the flight, continuous-wave fire control directors provide the final guidance to the target. Because the radar beam is electronically steered, phased array systems can direct radar beams fast enough to maintain a fire control quality track on many targets simultaneously while also controlling several in-flight missiles.
8. Render the text: Radar