Class 10 English Unit: 5 Science and Experiment Reading I: Yes, You Can Boil Water at Room Temperature
Unit 5: Science and Experiment
Getting Started
Let's think about the pictures shown in the textbook. The pictures are about a science laboratory where students are observing something by using a microscope and doing experiments.
Reading I: Yes, You can Boil Water at Room Temperature
Click for Video: https://www.youtube.com/watch?v=baNsHd7-J28
Vocabulary
1. Altitude - /ˈæl.tɪ.tjuːd/ - Noun - the height above sea level
2. Denver - /ˈden.vər/ - Proper Noun - a city in Colorado, USA
3. Temperature - /ˈtem.prə.tʃər/ - Noun - the degree of heat present in a substance or object
4. Factoid - /ˈfæk.tɔɪd/ - Noun - a brief or trivial item of news or information
5. Vapour - /ˈveɪ.pər/ - Noun - a substance diffused or suspended in the air, especially one normally liquid or solid
6. Molecules - /ˈmɒl.ɪ.kjuːlz/ - Noun (plural) - groups of atoms bonded together, representing the smallest fundamental unit of a chemical compound
7. Fairly - /ˈfeə.li/ - Adverb - to a moderate extent
8. Thermal - /ˈθɜː.məl/ - Adjective - relating to heat
9. Jiggling - /ˈdʒɪɡ.lɪŋ/ - Verb (present participle) - moving quickly up and down or side to side
10. Equilibrium - /ˌiː.kwɪˈlɪb.ri.əm/ - Noun - a state of balance
11. Condenses - /kənˈden.sɪz/ - Verb (present tense) - changes from a gas to a liquid
12. Pressure - /ˈpreʃ.ər/ - Noun - the force exerted on a surface per unit area
13. Vacuum - /ˈvæk.juːm/ - Noun - a space entirely devoid of matter
14. Plunger - /ˈplʌn.dʒər/ - Noun - a device used for clearing blockages in pipes
15. Induce - /ɪnˈdjuːs/ - Verb - to cause or bring about
A. Find the words from the text that have the following meanings.
a. the height of an object or point to sea level or ground level - altitude
b. a ground of atoms bonded together – molecule
c. state in which opposing forces are balanced – equilibrium
d. to change from a gas or vapor to a liquid – condense
e. a piece of unreliable information that is repeated so often that it is accepted as the fact – factoid
f. a space or container from which the air has been removed – vacuum
g. a device that is used to remove a blockage from the drain of a basin or tub - plunger
B. Complete the sentences with correct words or phrases from the text.
a. Water bubbles break down if vapor pressure inside and outside the bubbles is equal.
b. As the altitude goes up, the boiling point of water decreases.
c. The random motion of molecules or particles is called thermal motion.
d. If the door does not open, try pushing the key into the lock.
e. Certain chemicals can induce desirable changes in the nervous system.
C. Answer the following questions. (Answers only)
a. The speed of the water particles is compared with the height of a group of adult humans.
b. Bubbles are formed in boiling water when water molecules have enough energy to push back other water molecules in the liquid phase.
c. The two things on which external pressure depends are the depth of water and the density of water.
d. The atmosphere is related to the pressure of water as it contributes to the total pressure on the surface of the liquid. The atmosphere pushes down on the surface of the liquid, which increases the pressure in the liquid.
e. If the atmosphere pressure on the liquid water was decreased, it would also decrease the pressure in the liquid. If the pressure is reduced enough to bring it down to the same level as the vapor pressure, the water particles will have enough energy to form boiling bubbles without needing to increase the temperature.
f. If the experimenter pulls the plunger out, it would decrease the pressure in the liquid and induce boiling.
D. What would happen on the earth if there were no gravity?
If there were no gravity on Earth, everything would float away into space, including the atmosphere, water, and all living beings. Objects would lose their weight, making movement and staying grounded impossible. The lack of gravity would disrupt the Earth's orbit around the Sun, leading to catastrophic consequences for the planet's climate and life as we know it.
Pronunciation
Pronounce the following pairs of words showing the difference between pure vowel and diphthong vowel and ask them to follow. Ask them to write S for the same and D for the different pronunciation.(Note: D - different, S- same)
|
So: /səʊ/Sow: /saʊ/ D |
Sale: /seɪl/ Sell: /sel/ D |
|
Hair: /heə(r)/Heir: /eə(r)/ S |
Just: /dʒʌst/ Jest: /dʒest/ D |
|
Said: /sed/ Sad: /sæd D |
Beer: /bɪə(r)/Bear: /beə(r)/ D |
|
Mail: /meɪl/ Male: /meɪl/ S |
Tail: /teɪl/ Tale: /teɪl/ S |
|
Rear: /rɪə(r)/ Rare: /reə(r)/ D |
Sheer: /ʃɪə(r)/Share: /ʃeə(r)/ D |
|
Here: /hɪə(r)/ Hare: /heə(r)/ D |
Met: /met/ Mate: /meɪt/ S |
|
Get: /ɡet/ Gate: /ɡeɪt/ D |
Sale: /seɪl/ Sail: /seɪl/ S |
|
Maid: /meɪd/ Made: /meɪd/ S |
Tell: /tel/ Tail: /teɪl/ D |
Posts
Post a Comment