UNIT 4

DESCRIBING DIMENSIONS AND PROPERTIES

Dimensions (األبعاد)

• A line has one dimension.

• An angle has two dimensions.

• A triangle has three dimensions.

The dimensions of an object are its height, length, width, volume, area, etc.

Using be ( is, are )

• The building is 12 meters high.• The river is 23 meters deep.• The wall is 30 centimeters thick. • The room is 4 meters wide.• The road is 450 kilometers long. Sentence Pattern ( جملِة� (نمط Subject + is + (4/6 m,cm,km) + adjective Ex. 1 and Ex.2 (page 30 / 31) H.W.

Exercise 3

1. The Nile is 6,690 km long.2. The Pacific ocean is……..3. The Pacific ocean is……..4. The Pacific ocean is……..5. Mount Fujiyama is……..

Length(long)

Width(wide)

Height (high)

Maximum Depth(deep)

the Nilethe Pacific Ocean Mount Fujiyama the Amazon

6,690 km1,4500 km

6,387 km

17,700 m3,776 mabout 2 km

2,066m

50 m

Ex.4 The Eiffel Tower• 300 meters high• 150 meters wide at the

base• the TV antenna at the top

adds 22 meters to the height

1. The Eiffel Tower is 300 meters high.

2. It is 150 meters wide at the base.

3. The TV antenna at the top adds 22 meters to the height.

Ex.5 The Riyadh-Dammam Railroad

• 450 kilometers long• built in 1947• Takes four hours to

travel1. The Riyadh-Dammam

Railroad is 450 kilometers long.

2. It was built in 1947.3. It takes four hours to travel

from Riyadh to Dammam.

Using “have” ( has )

• The building has a height of 12 meters.• The river has a depth of 23 meters.• The wall has a thickness of 30 centimeters.• The room has a width of 4 meters.• The road has a length of 450 kilometers. Sentence Pattern. X have / has + noun phrase ( اإلسميِة (العبارة Ex. 6 (H.W)

Other nouns of dimension

• The circle has a radius of 4 cm.• The circle has a diameter of 8 cm.• The circle has an area of 20 m2.• The circle has a circumference of 1 m.• The pale has a volume of 5 liters.

Exercise 7

2 cm 12.5 cm 5cm

1- The cylinder has the radius of 2 cm.

2- It has the height of 5 cm.

3- It has the circumference of 12.5 cm.

4- It has the volume of 63 cm3 .

A 10 cm

C B 12 cm 5- The isosceles triangle

has the height of 8 cm. 6- It has the area of 48

cm2. 7- AB has the length of 10

cm.

8cm

Alhambra Palace• Main wall 78 meters high • Length 1,400 meters• Built between 1238 and

1358• Called ‘Alhambra’, meaning

‘the red’ in Arabic, because of the colour of the bricks used.

The Alhambra is a famous building in Granada, Spain. Its main walls are 78 meters high. Its length is 1,400 meters. It was built between 1238 and 1358. It is called ‘Alhambra’ , meaning ‘the red’ in Arabic, because of the colour of the bricks used.

The Golden Gate Bridge

• The Golden Gate Bridge• The main span 1,280• The two towers 227

meters high• Road 81 meters above

the water at high tide

The Golden Gate Bridge is a symbol of San Francisco. Its main span has a length of 1,280 meters . The two towers have the height of 227 meters. Its road has the height of 81 meters, above the water at high tide.

Describing Properties

Have (has) pattern.• Water has a boiling point of 100 0C.• The car has a speed of 250 km/h.• The tank has a capacity of 100 liters.• Benzene has a specific gravity of 0.78. Be (is/are) pattern• The boiling point of water is 100 0C.• The speed of the car is 250 km/h.• The capacity of the tank is 100 liters.• The specific gravity of benzene is 0.78.

Exercise 10Subject Verb Direct object Additional Information

1) The car

2) The room

3) Carbon

4) Water

5) Steel

6) Sodium

7) Alcohol

8) Jupiter

has

has

has

has

has

has

has

has

7) a specific gravity of

5) the property of

8) a maximum temperature of

6) a density of

1) a speed of

4) a freezing point of

3) an atomic number of

2) a capacity of

5) resisting corrosion.

4) 0 0C.

1) 250 km/h

2) 25 students.

8) 800 kg/m3.

3) 6.

6) 0.971.

7) - 130 0C.

Exercise 12

• Mars has a diameter of 6,794 km.• The diameter of Mars is 6,794 km.

Planet Diameter Maximum temperature

Mars 6,794 km.

Saturn 120,000 km.

Jupiter 142,745 km.

Pluto 2,390 km.