Unit 18 (Grade 9 ) Part I – Transportation and Communication

  

Unit 18: Transportation and  Communication (page 224)

Getting started

Look at the pairs of pictures, talk about them in groups making comparisions.

Reading I (page 224)

Look at the pictures below and guess the answers.

a. Who are the people seen in the picture?

b. What are they doing?

Answer:

a. They are Orville and Wilbur Wright.

b. They are flying an aeroplane.

Wright Brothers

A. The meanings of the words are given below. Find the words from the text above.

a. a…….        equipment that are useful but not essential            

b. d…….        an action of going down                   

c. a…….. connected with the science or practice of building and flying aircraft

d. s…….        fixed in a place or position, supported or balanced; constant 

e. e…….        a scientific procedure undertaken to make a discovery

f. p…… to cause pain or trouble to somebody over a period of time 

Answer:

a. accessories equipment that are useful but not essential

b. descent an action of going down

c. aeronautical connected with the science or practice of building and flying aircraft

d. suspended fixed in a place or position, supported or balanced; constant

e. experiment a scientific procedure undertaken to make a discovery

f. plaque to cause pain or trouble to somebody over a period of time

 

B. Match the following words with the appropriate pictures. (Write a, b, c or d below the picture.)

a. propeller            b. spokes               c. elevator                 d. buzzard

Answer:

c. elevator                 a. propeller               b. spokes       d. buzzard

 

C. State whether the following statements are true or false.

a. The Wright brothers sold copies of toy helicopters at the market.

b. They had a printing business in their cycle shop.

c. The experience of cycling helped them to generate ideas for controlling and balancing aircraft.

d. The wing warping system controls the aircraft in a roll.

e. They learned more about balancing by watching other aircraft fly.

f. Their first experimentation was with a kite.

g. Wilbur Wright was the pilot of their 1903 Flyer.

h. Their aircraft could only fly straight. 

Answer:

C. State whether the following statements are true or false.

a. The Wright brothers sold copies of toy helicopters at the market.    False

b. They had a printing business in their cycle shop. False

c. The experience of cycling helped them to generate ideas for controlling and balancing aircraft. True

d. The wing warping system controls the aircraft in a roll. True

e. They learned more about balancing by watching other aircraft fly. False

f. Their first experimentation was with a kite. True

g. Wilbur Wright was the pilot of their 1903 Flyer. False

h. Their aircraft could only fly straight. False

 

D. Put the following events from the text above in chronological order.

a. Their first Flyer took off under its own power with a pilot.

b. The Wright brothers opened a cycle shop.

c. The Wright brothers developed a machine overcoming complex technical problems. 

d. Milton Wright brought home a toy helicopter.

e. Wright brothers built their first machine designed to carry a pilot.

f. The children made copies of the toy helicopter.

g. The Wright brothers began their aeronautical research.

h. The Wright brothers started a printing business.

Answer:

a. Milton Wright brought home a toy helicopter.

b. The children made copies of the toy helicopter.

c. The Wright brothers started a printing business.

d. The Wright brothers opened a cycle shop.

e. The Wright brothers began their aeronautical research.

f. Wright brothers built their first machine designed to carry a pilot.

g. Their first Flyer took off under its own power with a pilot.

h. The Wright brothers developed a machine overcoming complex technical problems.

 

E.  Answer the following questions.

a. What services did the Wright brothers offer from the cycle shop?

b. How did their cycle business help them to build an aircraft?

c. How did the brothers develop the idea of balance and control in the flight of an aircraft?

d. What was their first aircraft like?

e. What did they do to create the flight conditions?

f. What is "wing warping"?

g. When and where did the first Flyer take off?

h. What progress had they made by 1904?

i. What was the world's first practical airplane like?

Answer:

a. Initially, they sold and repaired bicycles. They would replace spokes, fix broken chains, and sell accessories. In 1896, they began to build their won brand of bicycles.

b. Their cycle business helped them in the investigations of flight.

c. The brothers developed the idea of balance and control in the flight of an aircraft using the technology they learned from their bicyles business.

d. Their first aircraft was like a small kite.

e. To create the flight conditions, they tested small model wings in a wind tunnel they had built.

f. "Wing warping" was an early system for roll control of a fixed-wing aircraft.

g. The first Flyer took off at 10:35 am at Kill Devil Hills, NC.

h. They achieved the first circular flight of an airplane by 1904.

i. The world's first practical airplane was repeatedly banked, turned, circled, and flown in figure eights.

 

F. What improvements have been made to aircraft since the time of Wright brothers to the modern day? Discuss.

 

Grammar I (page 230)

B. Choose the correct words from the brackets and fill in the blanks.

a. Shishir was ………..injured in a  car accident. (serious/seriously)

b. The             other   passengers     sustained……..injuries.       (serious/ seriously)

c. You behaved very ………… (selfish/selfishly)

d. Riyasa is ……….upset for having lost the job. (terrible/ terribly)

e. There was a ……..change in the weather. (sudden/suddenly)

f. All the men and women had worn…….dresses.  (colourful/ colourfully)

g. Lalita was ……………..dressed. (colourful/colourfully)

h. Rajkumar fell off the roof and hurt himself quite ……(bad/ badly)

i. Netra was trying  ……….to win Nirmal's trust. (hard/hardly)

j. Don't climb that tree. It doesn't look…….(safe/safely)

k. He gave me an …….look when I interrupted him. (angry/ angrily)

l. Look at that snake! It seems very ………. (dangerous/dangerously)

Answer:

a. Shishir was seriously injured in a car accident.

b. The other   passengers sustained serious injuries.

c. You behaved very selfishly.

d. Riyasa is terribly upset for having lost the job.

e. There was a sudden change in the weather.

f. All the men and women had worn colourful dresses.

g. Lalita was colourfully dressed.

h. Rajkumar fell off the roof and hurt himself quite badly.

i. Netra was trying hard to win Nirmal's trust. (hard/hardly)

j. Don't climb that tree. It doesn't look safe.

k. He gave me an angry look when I interrupted him.

l. Look at that snake! It seems very dangerous.

 

 

For remaining exercises CLICK HERE.

For Contents CLICK HERE.

For unit 17 CLICK HERE.

For unit One CLICK HERE.

Other notes

For class 6 CLICK HERE.

For unit 7 CLICK HERE.

For class 11 CLICK HERE.

For class 12 CLICK HERE.