a) by tropospheric waves
b) by ionospheric waves
Finish the sentences using the words with the opposite meaning:
1. part of a wave travels at an angleto the ground … … .
2. the part traveling through the lover atmosphereis called the tropospherewave … … .
3. groundwaves can travel short distances… … .
4. lonosphericwaves make long-distance short wavecommunication possible… … .
5. lonosphericwaves reachthe ionospheric region… … .
C
Answer the following questions:
1.In what direction do waves leaving an antenna travel? 2. What is the part of the signal traveling along the ground called? 3. What is the part of the signal traveling at an angle to the ground called ? 4. What is the part of the signal traveling through the lower atmosphere called? 5. What distances does the ground wave component travel? 6. What distances does the ionospheric wave component travel? 7. What waves make long-distance short-wave communication possible? 8. What region do ionospheric waves reach? 9. At what height does a region called ionospheric begin? 10. What is the difference between ionospheric waves and ground waves?
Glosarry
| English | Russian | Kazakh |
| leave | ïîêèíóòü | қàëäûðó |
| angle | óãîë | áұðûø |
| Long-distance | äëèííî-äèñòàíöèîííûé | ұçàқ қàøûқòûқ |
| measurement | èçìåðåíèå | өëøåì |
| region | ìåñòíûé | àéìàқòûқ |
| height | âûñîòà | áè³êò³ê |
| sphere | ñôåðà | àéìàқ |
| possible | âîçìîæíî | ìүìê³í |
SIW:
Name 10-15 words and phrases, give examples
SIWT: Retell the text
Literature:1.Orlovskaya I.V.”English”-Moskow-2007
2.Raymond Murphy”Essential Grammar in Use”
3.John Eastwood”Oxford practice grammar
Text: Electric Cells
An electric cell is used to product and supply electric energy. It consists of an electrolyte and two electrodes. Electrodes are used as terminals, they connect the cell to the circuit – current passes through the terminals and the bulb lights.
Cells can be connected in series, in parallel and in series – parallel. In order to increase the current capacity cells should be connected in series. In case buttery has a large current capacity and a large voltage output, its cells are connected in series – parallel.
When cells are connected in series the positive terminal of one cell is connected to the negative terminal of the second cell, the positive terminal of the second cell – to the negative terminal of the third … and so on.
When cells, are connected in parallel their negative terminals are connected together and their positive terminals are also connected.
In case a cell has a trouble it shops operating badly. This cell should be substituted by another one.
Bulb [ bëlb ] ýëåêòðè÷åñêàÿ ëàìïà
to light [lait] çàæèãàòü, îáæèãàòü
to increase [ in’kri:s ] óâåëè÷èâàòü(ñÿ), âîçðàñòàòü
to substitute çàìåíÿòü
and so on è òàê äàëåå
2. Read the words and put down their Russian equivalents:
[I’lektroud] electrode ______________________________
[I’ilektralart] electrolyte ______________________________
[sta:t] to start ______________________________
[‘opereit] to operate ______________________________
[‘aisaleit] to isolate ______________________________