Revision Pack – Grade 8
Answer Key
Term 2
Study the following for your exam :
1.
2.
3.
4.
5.
6.
7.
Unit 4 Lesson 4 (Natural Disasters) P.86
Unit 4 Lesson 5(Layers of the Ocean ) P. 94
Unit 5 Lesson 1 (Consumption and decision Making) P.105
Unit 5 Lesson 2 (A better consumer) P.109
Unit 6 lesson 1 (The first Americans)
The Revision Pack
Map Skills
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Unit 4, Lesson 4:
Natural Disasters
A. Choose the answer from column B to tell about the different
forms of land disasters:
A
Earthquake__d___
Avalanche__c___
B
a. An opening in the Earth
crust through which
molten lava and ashes are
ejected intensely cause
volcanoes.
b. A volcanic water and
mudflow down the slopes
of a volcano along with
landslide.
Lahar_b__
c. The fast flow of snow from
the top of the mountain
down the slopes.
Volcano_a__
d. The sudden shaking of
Earth`s crust.
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B. Answer the following questions:
1. Which are the areas on Earth where Earthquakes occur more
frequently?
Areas near the equator or on the equator.
2. What are the procedures that people living in active volcanoes areas
should take?
They should always plan an evacuation plan.
3. What are water disasters?
Water disasters are natural disasters, where water negatively effects
the environment. E.g. Flood and Tsunamis.
4. What do scientists believe about Limnic Eruption?
They believe limnic eruptions can be a result of other natural disasters
such as volcanes.
5. What is meant by Tsunami?
A series of water waves caused by the movement or dislocation of huge
masses of water.
C. Write True or False and correct the false:
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1. Blizzards and tornadoes are examples of water disasters. _false
weather disasters__
2. Besides having homeless and dead people, volcanoes also cause
fire in close neighboring area.
_true_
3. Natural disaster have been on the schedule of everyone. _false
never beeen_
4. 198 events of tsunami have occurred in japan during the past
years.
_false 195_
5. Limnic Eruption leads to the suffocation of people and animals.
true_
6. Lake overturns cause other disasters such as tsunamis.
_true_
7. Advanced technology has helped in preventing natural disasters
from taking place.
_false it has not helped prevent_
Unit 4, Lesson 5
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Layers of the Ocean
D. Choose the correct answer to complete to tell about the each
layers of the ocean:
A
Mesopelagic zone_b__
Bathypelagic zone_d__
Abyssopelagic zone__c_
Hadalpelagic zone__e_
Epipelagic zone __a_
B
a. This surface reaches
approximately 200 m
downwards.
b. This layer stretches down
from 200m to 1000m.
c. Stretches from 4000m to
6000 below the surface of
the sea.
d. This layer goes down from
1000m to 4000m.
e. This layer extends from
6000m downwards.
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E. Answer the following questions:
1. Why is the temperature of the first layer higher than any other
ocean layer?
As it receives the most sunlight.
2. What is the source of light in the 3rd ocean layer?
Self-luminous creatures that live there.
3. Why is it nearly impossible to find sea creatures in the 4th ocean
layer?
Due to the nearly freezing waters and lack of sunlight.
4. What is the other name of the Midnight Zone?
_bathypelagic zone or dark zone__
F. Write True or False:
 As we go deeper into the ocean, the temperature increases due to
the lack of sunlight.
___F_
 Some animals can survive in the Hadalpelagic zone.
_T___
 Twilight zone is the other name of the epipelagic zone.
__F__
 Abyssopelagic zone stretches from 1000m to 4000m
__F__
 The water is freezing and its pressure is high in the Trenches._T_
Unit 5, Lesson1
Consumption and Decision making
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B.p 105-108
G. Answer the following questions:
1. Who is a consumer?
A person who buys a product or service is a consumer.
2. How does the level of education of the individual affect his income?
The educational level of the individual plays a major role in the income:
the higher the educational level the better the income.
3. What is a disposable income?
The amount of money that the person owns after paying all his taxes.
4. What is a discretionary income?
Refers to the money that is leftover after all expanses if the disposable
income have been spent.
5. What is the meaning of rational choice when buying a product?
A rational choice is that which is considered to be the best alternative
with the greatest perceived value.
6. How do consumer develop their knowledge base about a product?
When people visit the market and look for specific products to
gather more information about them and about their prices.
H. Fill in the blanks to complete the following:
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1. ___Advertisement___ Works toward attracting the consumer and
making him take the decision of choosing a particular product.
2. All individuals pay for _services_ like connection, electricity, money
transfer and many others.
3. After making a decision to buy a product, two scarce resources are
part of the following stage:__income__and __time__
4. The _internet_ has grown to be an important source of collecting
information about a product.
5. Each person plays an important role in affecting the economy_ of a
nation.
6. A _discretionary_income is used to pay for the wants a person would
like to have.
General Revision Questions with Answers
A. Correct ALL of the following statements:
 The Inca`s civilization was able to end up the civil war.
The empire was destructed because of the civil war.
 Colombia is a safe country.
The country is a center of illegal acts kidnapping and killing
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 Consumers don’t have to receive information about a product they want to
buy.
All the consumer in a community have the right to receive
information about any product for the sake of a reasoned choice.
 You can return a product if it is advertised at a lower price elsewhere.
You are not supposed to return a product when that product is
advertised at a lower price elsewhere.
 Spain and Portugal didn’t sign any treaties.
Spain and Portugal signed treaty which stated that all the lands
outside Europe would be split between these strong powers at
that time .
B. ANSWER THE FOLLOWING QUESTIONS:
 Name and discuss any of the rights a consumer has.
All individuals have the rights to be safe in terms of gods for
example goods should not endanger their life or health by any
means.
 What are some activities that take place in a town square?
1. musical concerts
2. open markets
3. political rallies
 How can a consumer be stylish and spend reasonable money on his
clothes?
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Some consumers wait for seasonal sales and buy more clothes for
affordable prices.
 How was the condition of farming in America?
Agriculture flourished and settlers grew new crops.
 Write one of the stories about how America was discovered.
One story said the people from Eurasia migrated into the newly discovered land
through the Bering Strait, soon became the first inhabitants
C. Use this chart to show the two countries that didn’t get their
independence except in the 20th century.
Name of the
country:
Ruled by :
Gained
independence in :
Guyana
United Kingdom
1966
Suriname
The Dutch
1975
E. Write the definitions of the following terms:
Write the definitions of the following terms:
1. Shopping:
Shopping is the process of examining products or services from retailers with the
intent of purchasing.
2. Flea Market: it is also called swap market. This is a type of market where
secondhand items or inexpensive goods are either sold or bartered.
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3. Bazzar: It is a permanent marketplace or street of shops where goods and
services are sold or exchanged.
4. Town square:
It is an open public space located in the heart of a traditional city.
F.
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Good Luck!!!
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