1Getting started: Look at the pictures of a student with microscopes and a row of laboratory glassware. What do you think they are about?
2Look at the picture of the pan on the stove. What can you see in it, and how does water boil?
3Find the words from the article that have these meanings: the height of a point in relation to sea level; a group of atoms bonded together; a state in which opposing forces are balanced; to change from a gas to a liquid; a piece of unreliable information repeated so often that it is accepted as fact; a space from which the air has been removed; a device used to remove blockages from a drain.
4Complete the sentences with words or phrases from the article: Water bubbles break down if vapour ... inside and outside the bubbles is equal. As the altitude goes up, the boiling point of water ... . Random motion of molecules or particles is called ... . If the door does not open, try ... the key in the lock. Certain chemicals can ... undesirable changes in the nervous system.
5What is the speed of the water particles compared with?
6How are bubbles formed in the boiling water?
7Mention two things on which external pressure depends.
8How is the atmosphere related to the pressure of water?
9What would happen if the atmospheric pressure on the liquid water was decreased?
10What would the experimenter gain if he or she pulled the plunger out?
11What would happen on the Earth if there were no gravity? Discuss possibilities with your friends.
12Pronounce these pairs and write S if they sound the same and D if they sound different: so / sow, sale / sell, get / gate, hair / heir, just / jest, sale / sail, said / sad, beer / bear, maid / made, mail / male, tail / tale, tell / tail, rear / rare, sheer / share, here / hare, met / mate.
13Work in pairs. Have conversations like 'Who do you think will win the race?' in these situations: eat too much / gain weight / get lazy; rain this evening / stay at home / keep in touch with parents; keep on heating / water changes into vapour / dries up; not stop smoking / get cancer / die early.
14Work in pairs and have imagined conversations using these clues: What laws would you abolish if you could? Which planet would you like to go to if you were given an offer? Why wouldn't you open windows? Why would you water plants? Why would you study law?
15Match the clauses. Column A: If you go to Taplejung; You will get well soon; The horse won't kick you; If I were you; What happens; I would miss the bus; Provided that they discussed properly; As long as they communicate well. Column B: if you follow the doctor's advice; unless you go behind it; you can see the Pathibhara temple; if you heat water?; if I did not reach the bus stop on time; I would see a doctor; they won't have any misunderstanding; the problem might be solved.
16Complete using the correct form of the verbs in brackets: If it is cold, I ... (wear) a coat. If Purna helps with the housework, his mother ... (have) more time for him. If I were a bird, I ... (make) a good observation of the land below. If I ... (go) to Mustang, I would visit Muktinath. If I ... (be) a billionaire, I would buy a castle. You'd save petrol if you ... (drive) more carefully. Say 'hello' if you ... (see) her. Provided that you ... (consent), I will take a few days' leave next week. Take care of the pence, the pounds ... (take) care of themselves.
17Write stepwise instructions to draw a jellyfish. You may use these words: circle, lines, semi-straight, creaky, on top of, above, below.
18Look at the picture of the man with musical notes around his head. What do you think he is doing? Do you like the sound of rain?
19Match the words with their meanings. Words: eternal, impalpable, vaguely, descend, lave, atomies, reck. Meanings: come down; unclearly; indivisible particles; take care of; not easily understood; to pour out as water; never-ending.
20Fill in the blanks with impalpable, recks, globe, drought, beautify, latent: The river ran dry during the ... . It is still ... to understand how the earth originated. The company produces make-up and skin care products designed to gently and effectively ... human skin. His greatest ambition is to sail around the ... . Without training, his musical talent remained ... . What ... it whether they win or lose?
21Complete the summary of the poem using quenches, rhythm, mysterious, heal, atomies, condensation, ascends, showers, originality.
22What are the two voices in the poem? Who do they belong to?
23How is the cyclic movement of the rain shown in the poem?
24Why are the showers necessary for the Earth?
25How are the rain and music similar?
26How are the clouds formed?
27List the pairs of opposite words in the poem.
28What may happen on the Earth if it does not rain for a long time? Discuss in a group.
29Look at the picture of the glass of layered liquids. What objects do you see, and why are there layers of liquids in the glass?
30From the listening task: Objects with ... density sit on the bottom. The density of ... is less than that of syrup and more than that of oil.
31Why do water and vegetable oil not mix? Talk to your friends.
32Complete using the correct form of the verbs: If Gaurab were the captain, the team ... (play) better. I ... (call) you had I known you were in Nepal. If he ... (not/come) to Nepal, he would not have seen Mt. Everest. Had you arrived a bit earlier, you ... (see) Manashi. We could slow down global warming if we ... (reduce) energy consumption. If he were to see me, he ... (know) me at once. Were Rijisa in the USA, she ... (be) working for a company. How would you feel if someone ... (ask) you for an autograph? What ... (you/do) if Keshab had proposed you for marriage? If I ... (have) a life jacket, I could certainly swim across the river.
33Complete with appropriate clauses: If you don't leave soon, ... . If it rains in winter, ... . ... as long as you tell the truth. A country cannot develop unless ... . ... if they insult you?
34Write a letter of complaint to the concerned authority about the unmanaged garbage in your locality. Mention the hazards of unmanaged garbage to public health and suggest some measures to solve the problem.
35Project work: Study a local technology used in your locality. Take notes of its working principles and present it to the class.
36Explain in your own words why rice cooks more slowly at a high altitude.
37What is the difference between evaporation and boiling, according to the article?
38Rewrite without 'if': 'If I had known about the meeting, I would have come.' and 'If she were the principal, she would change the rule.'
39Why does the rain call itself 'the Poem of Earth'?
40Choose the correct word in each sentence: The bus remained (stationary / stationery) at the red light. Could you (borrow / lend) me your umbrella? Loud music can (affect / effect) your hearing.