- •Assignments
- •1. Answer the questions.
- •2. Divide the complex sentences into simple ones.
- •4. Replace the Russian words in the brackets with their English equivalents.
- •5. Find the synonyms to the following words in the text.
- •7. Say if the following statements correspond to the text. Correct the wrong ones.
- •8. Speak on the following topics.
- •Assignments
- •1. Answer the questions.
- •2. Translate the following words and word-combinations.
- •3. Replace the Russian words in the brackets with their English equivalents.
- •4. Find the synonyms to the following words in the text.
- •5. Read the dictionary definitions and find the defined words in the text.
- •7. Point out the main ideas of the text. Make a list of them. Unit II rock-forming minerals
- •Assignments
- •1. Answer the questions?
- •3. Replace Russian words in the brackets by their English equivalents.
- •4. Find the synonyms to the following words in the text.
- •5. Match the terms on the left with their definitions on the right. Use them in sentences of your own:
- •6. Say if the following statements correspond to the text. Correct the wrong ones.
- •7. Make a list of basic properties of rock-forming minerals and speak on each of them.
- •What makes a gemstone?
- •Assignments
- •1. Answer the questions.
- •2. Suggest the Russian for:
- •3. Replace the Russian words in the brackets with their English equivalents.
- •4. Find the synonyms to the following words in the text.
- •5. Read the dictionary definitions and find the defined words in the text.
- •6. Mark the following sentences as True (t) or False (f). Correct the wrong ones.
- •7. Speak on the following topics.
- •The nature of rocks
- •Assignments
- •6. Fill in the gaps with the words and expressions from the text.
- •8. Point out the main ideas of the text. Make a list of them. Sedimentary rocks
- •Assignments
- •1. Answer the following questions:
- •7. Analyze the diagram and speak on it.
- •Igneous rocks
- •Assignments
- •1. Answer the following questions:
- •2. Find in the text the English equivalents for the Russian words and expressions. Reproduce the contexts in which they are used.
- •4. Fill in the gaps with the words and expressions from the text.
- •6. Speak on the following topics:
- •7. Find 9 geological terms.
- •Metamorphic rocks
- •Assignments
- •1. Find in the text the English equivalents for the Russian words and expressions. Reproduce the contexts in which they are used.
- •2. Suggest the Russian equivalents.
- •4. Fill in the gaps with the words and expressions from the text.
- •5. Mark the following sentences as True (t) or False (f). Correct the wrong ones.
- •7. Translate the following questions and answer them:
- •8. Speak on the following topics:
Assignments
1. Answer the questions.
What has captured the imaginations and desires of men for ages?
What is a gemstone?
What kind of chemicals are gems?
What are the most recognized gemstones?
2. Suggest the Russian for:
fine leaded crystal, to capture imaginations and desires, to become the subject of, resistant to abrasion, Moh's hardness scale, perfect cleavage directions, a cut gem, a semi-precious status, an index of refraction, to fall short of perfection, to be cut in the manner of, natural substance, a chemical compound
3. Replace the Russian words in the brackets with their English equivalents.
There are a few (драгоценные камни) that are not true minerals, called (минералоиды).
Today, finer gemstone (экземпляры) are (доступны) to the average person than at any time in history.
Zircon is a (химические соединение) of metal zirconium.
A gemstone is a stone that is beautiful, (редкий), and (прочный).
Most gemstones have good hardness and a high (коэффициент преломления).
(Алмаз) is usually colourless and (прозрачный), unlike other minerals composed of carbon.
The green colour of beryl is (благодаря) an extremely small (количество) of chromium.
Some minerals are too common and are given a (полудрагоценный) status.
4. Find the synonyms to the following words in the text.
a film, fantasy, sample, uncommon, breakage, ideal, usual, firm (strong), rewarded, acknowledged, standard, combination, to include, in place of, thanks to
5. Read the dictionary definitions and find the defined words in the text.
An arc or circle that exhibits in concentric bands the colors of the spectrum.
A precious or sometimes semiprecious stone cut and polished for ornament.
Something that obviously belongs to a particular category but is noticed by reason of an individual distinguishing characteristic.
Chemical transformation or change: the interaction of chemical entities.
The quality of a crystallized substance or rock of splitting along definite planes.
Native crystalline carbon that is usually nearly colorless, that when transparent and free from flaws is highly valued as a precious stone.
A hard yellowish to brownish translucent fossil resin that takes a fine polish and is used chiefly in making ornamental objects.
The cohesion of the particles on the surface of a mineral as determined by its capacity to scratch another or be itself scratched.
6. Mark the following sentences as True (t) or False (f). Correct the wrong ones.
Diamond is extremely colorful and pretty but has a hardness of only 4 on the Moh's hardness scale.
Zircon is a chemical compound of metal zirconium.
Gemstones have captured the imaginations and desires of men and perhaps especially, women, for ages.
Most gems are sulphides which can be very stable, hard minerals.
Most gemstones have good hardness and a high index of refraction.
There are also a few gemstones that are not true minerals (called rocks) but are included here: opal, amber, and moldavite.
A diamond is composed of nothing but silicon.
Opal is the hardest known natural substance.
A gemstone is a stone that is beautiful, rare, and durable.
Among red precious stones, garnet, unlike ruby, is dark red.
Rubies and sapphires are the same mineral corundum, which is the hardest mineral next to diamond.
12. Beryl which is transparent, pale water-blue is called garnet.