Revision on
Unit 2&3
_______________________________________________________________________________
1)Complete the following:
1-The measuring unit of the atmospheric pressure is ………………………..
2-The highest temperature layer in the atmosphere is……………..and the least temperature one
is…………………
3-The surface area at which the temperature is constant between troposphere and
stratosphere is known as ……………….
4-The temperature …………as going up in troposphere layer until it reaches………
5- Ionosphere is surrounded by two magnetic belt known as………………………..
6-The satellites float around the Earth in an area known as…………………..where the atmosphere
is inserted into outer space.
7-The air movement in troposphere is……………while the air movement in stratosphere is
…………………….
8-The natural amount of ozone equals ……………..Dobson units.
9-The most dangerous pollutants of ozone layer…………………..and………………
10-…………………..are from the pollutants of ozone layer which are used in fire extinguishers.
11-CFC compounds are commercially known as …………which is used as ………….in aerosols.
12-…………………is from the pollutants of ozone layer which is used as insecticide to preserve
stored agricultural crops.
13-The most important green house gases are…………..,…………….and…………….
14-Examples of a complete body fossil are…………………..and………………….
15-Studying the fossil record showed that life starts first in …………..and then established on
……………
16- Studying the fossil record showed that algae preceded …………….and………………
17- Studying the fossil record showed that the first vertebrate appeared was ……………..
18-Archaeopteryx represents the link between ……………..and……………….
19-Among the ways of pollution that contributed to the extinction of the living organisms are
………………………,……………………….and………………..
20-From factors causing extinction of species are ……………...................,………………………
and……………………………………
Choose the correct answer:
1-The atmospheric pressure……………as we rise up above the sea level.
( increases decreases
- doesn't change )
2- Meteors are formed in ……………………layer.
( exosphere
- thermosphere
- mesosphere
- stratosphere )
3-The density of air ………………as we rise up above the sea level.
( increases decreases
- doesn't change )
4- All the following are greenhouse gases except……………
( CO2
- O2
- N2O
- CH4 )
5-Ozone layer is measured by a unit called……………
( km
- nm
Dobson
- mm3 )
6-Most of the weather features occur in ………….layer
(troposphere
- thermosphere - mesosphere - stratosphere )
7-……………..are used in extinguishers
(methyl bromide gases
- halons
- nitrogen oxides - UVradiation)
8-The ratio of erosion of the ozone layer in an area where the degree of its ozone is 75 Dobson is
………………….%
( 50 - 75
- 25 - 100)
9-The scientists have noticed there was erosion of ozone layer above…………..
( north pole - south pole - equator )
10-The ultraviolet radiation has……………. effect.
( chemical - thermal - magnetic )
11-When CFC compounds breaks down under the effect of UV radiation ……….atom liberates.
( chlorine fluorine - carbon - oxygen )
12-The infrared radiation has……………. effect.
(chemical - thermal - magnetic)
13-…………………is from the endangered animals because of global warming.
( blue whale - seal - shark )
14-The movement of air is vertical in …………layer.
( troposphere - stratosphere - mesosphere - thermosphere )
15-fossils are often found in ………………….rock.
( metamorphic - sedimentary - volcanic - igneous )
16- …………………is an example of microfossils.
( Mammoth - Fern - Archaeopteryx - Radiolaria )
17-……........fossils,they indicate that the environment where they lived was a hot and rainy
tropical environment.
( Nummulites - Ferns - Coral )
18-……........fossils,they indicate that the environment where they lived was clear, warm and
shallow seas.
( Nummulites - Ferns - Coral )
19- -……........fossils,they indicate that there was a sea floor in Gebel Mokattam.
( Nummulites - Ferns - Coral )
20- Complete fossils of insects are found preserved in………………………
( ammonites - amber - igneous rock - metamorphic rock )
Give reasons for:
1-Ozone layer is formed in the stratosphere layer.
………………………………………………………………………………………………………
……………………………………………………………………………
2-The lower part of the stratosphere is suitable for flying airplanes.
………………………………………………………………………………………..
………………………………………………………………………………………
3-The phenomenon , ozone hole, increases in September each year.
………………………………………………………………………………………………………
……………………………………………………………………………
4-Stop building concord airplanes.
……………………………………………………………………………………….
……………………………………………………………………………………….
5 Mesosphere layer is much vacuumed.
………………………………………………………………………………………………………
…………………………………………………………………………..
6-Peterified wood are considered from fossils although they look like rocks.
………………………………………………………………………………………………………
……………………………………………………………………………………………………
4)Write the word(s) that means each of the following statements:
1- The continuous increase of the average temperature of the air near the surface of the Earth.
(
)
2-A type of ultraviolet radiation that is absorbed completely (100%) in the ozone later.
(
)
3-The weight of air column of an atmosphere height above a unit area. (
).
4-One of the atmosphere components that its ratio increases in recent years to reach 0.038%
(
)
5-An extinct bird has short legs and its wings are small.
(
)
6- An extinct bird ,its female lays only one egg each spring and its extinction due to cutting the oak
and beech trees
(
)
7- An extinct mammal, midway between horse and zebra. (
)
8- An extinct mammal has a wolf's head, dog's tail, a pouch like kangaroo and striped skin like a
tiger.
(
)
9-An endangered mammal , it inhabits Bamboo forests in northeast China.
(
)
10- An endangered mammal, it overhunted for using its horn for medical purposes. (
)
11- An endangered bird , its head covered with white feathers.
12- An endangered bird, it disappeared from Aswan after the building of the High Dam (
)
13- An endangered plant, it grow in swamps of the Upper Nile , it was used to manufacture writing
papers.
(
)
14-They are safe areas established to protect endangered species in their homeland.(
)
5)Choose from column(B)what suit in column(A):
A
B
1-Troposphere
a- the hottest layer in the atmosphere envelope.
2-Mesosphere
b- it is the region in which the atmosphere envelope is inserted with the
outer space.
3-Stratosphere
c- it is the region between mesosphere and stratosphere.
4-Mesopause
d- it is the layer in which air moves horizontally.
5-Exosphere
e- the coldest layer in the atmosphere envelope.
6-Ionosphere
f- the layer that all atmospheric phenomena happen in it.
g- it has an important role in wireless communications .
h- it is the region mesosphere and thermosphere.
1-…………………………………………………………..............................................
2-……………………………………………………………………………………….
3-………………………………………………………………………………………
4-……………………………………………………………………………………….
5-………………………………………………………………………………………
6-………………………………………………………………………………………
6)Problem:
1-Calculate the height of a mountain if the temperature at its base 25oC and its top -14oC
………………………………………………………………………………………………………
……………………………………………………………………………………………………
2-Fine the temperature at a point 10000 meters above the sea level if the temperature
at sea level is 300C .
…………………………………………………………………………………………
…………………………………………………………………………………………
7) compare between:
Simple ecosystem and complicated ecosystem.
…………………………………………………………………………………………
…………………………………………………………………………………………
…………………………………………………………………………………………
…………………………………………………………………………………………
…………………………………………………………………………………………
…………………………………………………………………………………………
…………………………………………………………………………………………
…………………………………………………………………………………………
………………………………………………………………………………………….
*What's meant by?
1- natural protectorates.
…………………………………………………………………………………………
……………………………………………………………………………………….
2- Extinction.
…………………………………………………………………………………………
………………………………………………………………………………………..