### UNIT 4

```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 (‫)نمط جملة‬
Subject + is + (4/6 m,cm,km) + adjective
Ex. 1 and Ex.2 (page 30 / 31) H.W.
Exercise 3
Length
(long)
the Nile
the Pacific Ocean
Mount Fujiyama
the Amazon
1.
2.
3.
4.
5.
6,690 km
1,4500 km
6,387 km
Width
(wide)
Height
(high)
17,700 m
3,776 m
2,066m
The Nile is 6,690 km long.
The Pacific ocean is……..
The Pacific ocean is……..
The Pacific ocean is……..
Mount Fujiyama is……..
Maximum
Depth(deep)
50 m
Ex.4
The Eiffel Tower
• 300 meters high
• 150 meters wide at the
base
• the TV antenna at the top
height
1. The Eiffel Tower is 300
meters high.
2. It is 150 meters wide at
the base.
3. The TV antenna at the
the height.
• 450 kilometers long
• built in 1947
• Takes four hours to
travel
long.
2. It was built in 1947.
3. It takes four hours to travel
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 (‫)العبارة اإلسمية‬
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
A
5cm
10 cm
8cm
1- The cylinder has the
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 .
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.
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
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
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
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 10
Subject
Verb Direct object
1) The car
has
7) a specific gravity of
5) resisting corrosion.
2) The room
has
5) the property of
4) 0 0C.
3) Carbon
has
8) a maximum temperature of
1) 250 km/h
4) Water
has
6) a density of
2) 25 students.
5) Steel
has
1) a speed of
8) 800 kg/m3.
6) Sodium
has
4) a freezing point of
3) 6.
7) Alcohol
has
3) an atomic number of
6) 0.971.
8) Jupiter
has
2) a capacity of
7) - 130 0C.
Exercise 12
• Mars has a diameter of 6,794 km.
• The diameter of Mars is 6,794 km.
Planet
Diameter
Mars
6,794 km.
Saturn
120,000 km.
Jupiter
142,745 km.
Pluto
2,390 km.
Maximum
temperature
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