Unit 8 (Grade 9 ) Science and Technology - Part II

 

Unit 8 Science and Technology

(Part II)

Reading II (page 99)

A.  Match the words in column A with the meanings in column B.

          Column A                     Column B

a.        fleet                 i.  a flat plane that is moved by wind

b.        inflatable         ii.  a very tall building

c.        harness           iii.  a group of something

d.        vane                iv.  capable of being filled with air

e.        skyscraper       v.  the act or process of splitting the nucleus of an atom

f.         fission            vi.  in large quantities

g.        bountiful         vii.  to control and use the force or strength of something

 

Answer:

a.        fleet                iii.  a group of something

b.       inflatable        iv.  capable of being filled with air

c.        harness           vii.  to control and use the force or strength of something

d.       vane               i.  a flat plane that is moved by wind

e.        skyscraper     ii.  a very tall building

f.         fission             v.  the act or process of splitting the nucleus of an atom

g.        bountiful        vi.  in large quantities

 

 

B.          Find the antonyms of the following words from the text.

       endless    modern     covered     fragrant      bound        inadequate

Answer:

endless- finite                  modern- traditional                             

covered-revealed              fragrant- odourless

bound- autonomous      inadequate-bountiful

C.         Match the idea numbers in column A to the correct idea in column

B.

        Column A                     Column B

a.        Idea I               i.        wave energy

b.        Idea II             ii.  hydrogen energy

c.        Idea III           iii.  energy through the fusion process

d.        Idea IV           iv.  solar energy

e.        Idea V             v.       energy through body movement

f.         Idea VI             vi.  altaeros energy

Answer:

a.        Idea I        iv.  solar energy

b.        Idea II       v.  energy through body movement

c.         Idea III     i.  wave energy

d.        Idea IV      ii.  hydrogen energy

e.         Idea V       vi.  altaeros energy

f.          Idea VI      iii.  energy through the fusion process

 

 

D.         Answer the following questions.

a.         How did JAXA prove the viability for the idea of space-based solar energy?

b.         What do we need to generate energy through our body movement?

c.         In what way are Idea III  and V similar?

d.         How can hydrogen be used as the source of energy?

e.         Why do floating turbines seem more effective than tower-mounted turbines?

f.          Why is the fusion process environmentally friendly?

g.         What does ITER stand for?

 

Answer:

a. JAXA proved the viability for the idea of space-based solar energy by successfully converting 1.8 kilowatts of electricity into microwaves after which they wirelessly beamed them a distance of 50 metres.

b. We need a knee brace to generate energy through our body movement.

c. Both Idea III and Idea V produce energy due to wind therefore they are similar.

d. Hydrogen can be used as the source of energy by separating from other elements like oxygen, carbon and nitrogen which has the gas yields high energy.

e. Floating turbines seem more effective than tower-mounted turbines because these turbines produce double energy than tower-mounted turbines.

f. The fusion process is environmentally friendly because it emits no pollutants or greenhouse gases and has no threat of nuclear meltdown unlike current nuclear fission reactors.

g. ITER stands for International Thermonuclear Experimental Reactor.

 

 

E.          Can you think of any other alternative energy sources? Talk about your ideas with your friends.

 

 

 

Grammar II (page 104)

 

A.         Fill in the gaps with suitable relative pronouns.

a.          Is that the spot ………………… you had the accident?

b.          The photograph ………………… you saw was taken a long time ago.

c.          Are those the students ………………… you were talking about?

d.          Last week, I went to visit the town ………………… my friend lives.

e.          This is the house ………………… my uncle and aunt live.

f.           These are the girls ………………… work hard.

g.          Krishna was the boy ………………… everyone appreciated.

h.          This is the judge ………………… is known for her wise decisions.

i.            This is the site ………….. I intend to build a house.

j.            The tiger ………… terrified the villagers was sent to the zoo yesterday.

k.          The tree …………… he cut down was not a large one.

l.            Mt. Everest ………………… is the highest peak in the world, lies in Solukhumbu district.

 

Answer:

a.          Is that the spot where you had the accident?

b.          The photograph which you saw was taken a long time ago.

c.          Are those the students whom you were talking about?

d.          Last week, I went to visit the town where my friend lives.

e.          This is the house where my uncle and aunt live.

f.           These are the girls who work hard.

g.          Krishna was the boy whom everyone appreciated.

h.          This is the judge who is known for her wise decisions.

i.            This is the site where I intend to build a house.

a.          The tiger which terrified the villagers was sent to the zoo yesterday.

b.          The tree which he cut down was not a large one.

c.          Mt. Everest which is the highest peak in the world, lies in Solukhumbu district.

 

B.          Rewrite the following pairs of sentences using who, whom, whose, which/that, or where.  

a.          Are these the keys? You were looking for the keys.

b.          Unfortunately, we couldn't attend the wedding. We were invited to the wedding.

c.          What is the name of the hotel? Your brother works in the hotel.

d.          The party wasn't enjoyable. We attended the party last Saturday.

e.          What is the name of the boy? The boy's father is a dentist.

f.           Who was the man? You talked to the man in the restaurant.

g.          What is the name of the shop? They sell medicine in the shop.

h.          Is this the man? The man donated all his property to a hospital.

 

Answer:

a. Are these the keys which you were looking for?

b. Unfortunately, we couldn't attend the wedding which we were invited.

c. What is the name of the hotel where your brother works?

d. The party wasn't enjoyable which we attended last Saturday.

e. What is the name of the boy whose father is a dentist.

f. Who was the man whom You talked to in the restaurant.

g. What is the name of the shop where they sell medicine?

h. Is this the man who donated all his property to a hospital.

 

For Unit Nine CLICK HERE.

For the first part CLICK HERE.

For Contents CLICK HERE.

For Unit Seven CLICK HERE.