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Oscar Academy
Under the supervision of Ministry of Education and Higher Education
‫ وثقة تتجدد‬...‫عطاء متزايد‬
nd
2 Semester Final Revision
2015-2016
Subject: Science
Grade 4 Sec ___
Name: _______________________________
Lesson: The Earth
Earth is a ball of rock, metal, water and gas.
Layers of the Earth
a. Crust is the outside layer of the Earth.
b. Mantle is the layer of the Earth between the crust and the core.
c. Core is the material at the centre of the Earth.
Atmosphere is the layer of gas that surrounds the Earth.
Continents is one of the six large areas which form most of the dry land on the Earth.
Diagram of Layers of the Earth
The Continents
a. North America
b. South America
c. Africa
d. Eurasia
e. Australia
f. Antarctica
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
The Earth’s Crust
a. land
d. mantle
b. ocean
e. seafloor crust
c. continental crust
Lesson: Investigating Rocks
Rock is a solid made from one or more minerals.
Rocks are all around us. We use rocks in many ways.
Uses of Rocks
a. chalk
b. cement for building and bridges
c. metals for cars
d. glass for windows
e. gems such as diamonds
Mineral is a pure non-living substance.
Examples of Mineral
a. salt
d. graphite
b. talc
c. diamond
c. alumina
d. gypsum
Metals such as iron, aluminum and copper are also minerals.
Properties of Rock
a. colours
b. hardness
c. texture (rough or smooth)
d. luster (shiny or dull)
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
Lesson: Types of Rock
Kinds of Rock
a. slate
d. granite
b. basalt
e. limestone
c. marble
f. sandstone
Types of Rock
1. Igneous rock
2. Sedimentary rock
3. Metamorphic rock
1. Igneous rocks it is liquid rock cools and becomes hard.
Examples
a. granite
b. basalt
2. Sedimentary rocks made from material that sinks to the bottom of a liquid, made from
sediment.
Examples
a. sandstone
b. limestone
3. Metamorphic rocks mean changed.
Examples
a. marble
b. slate
Rock Type
Igneous
Properties
Usually hard and dark
Has shiny crystals
Usually soft.
May be layered
Sedimentary
Often pale and dull
Usually no crystals
Hard
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
Metamorphic
Maybe light or dark
Maybe layered or show bands of colour
Has shiny crystals
Lesson: Minerals and Their Properties
Mineral is a non-living substance.
Some minerals are large crystals with regular shapes.
Minerals are broken into small grains.
Sand is made from grains of quartz.
Grain is a tiny particle.
Uses of Minerals
a. builds our homes
e. paint
b. builds our vehicles
f. toothpaste
c. builds our cities and roads
g. decorates our bodies
d. fertilizes fields
face cream
Lesson: Using Minerals
We are surrounded by minerals in the rocks of the Earth’s crust.
Minerals are taken from the ground at quarries, mines and oil wells.
Minerals are processed with heat, gases or electricity to give them properties we need.
Mineral Resources
Products
a. bauxite
aluminum
b. limestone
cement
c. sand
d. petroleum
glass
fuel
e. clay
pottery
f. gypsum
toothpaste
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
Lesson: Weathering Erosion
We need soil to grow crops.
Soil Erosion is a naturally occurring process on all land. Particles of rock on a hillside made to
prevent erosion.
Erosion occurs when the rock particles produced by weathering.
Water freezing in cracks in the rock expands and splits the rock into pieces.
Wind and water carry rock particles that weather the rock they strike.
Plants roots growing in cracks break the rock into smaller pieces.
Heating and Cooling make rocks expand and contract this makes them crack and crumble.
Animals hooves weather the rock on which they walk.
Lesson: Oceans, seas, rivers and lakes
River is a large natural stream of flowing water.
Lake is a large body of water surrounded by land or salt water.
Sea is a branch of the ocean, not completely surrounded by land.
Ocean is one of the large areas of salt water that covers most of the Earth.
Seas are branches of the ocean.
Five Great Oceans
a. Pacific Ocean
b. Atlantic Ocean
c. Indian Ocean
d. Southern Ocean
e. Arctic Ocean
Lesson: Under the Surface
This cross-section shows the ocean bottom. It is no flat. Under the water there are mountains,
canyons, valleys, plains, volcanoes and ridges.
Changes with depth
a. Light
b. Temperature
c. Pressure
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
Plants must have sunlight to make their food by photosynthesis.
Zooplankton is a microscopic animal that feed at the ocean surface.
Phytoplankton is a microscopic plant that float in the surface waters.
Bioluminescent is a living thing that is a light source.
Lesson: Waves and Tides
Internal zone is the environment low and high tides on the seashore.
Tide is a twice a day rise and fall of the ocean caused by the force of gravity from the moon and
sun.
The causes of tide are the force of gravity from the moon stretches the oceans, making them
bulge on either side of the Earth. The tides have an important effect on wildlife.
The intertidal zone is the area on the shore between low-water and high-water.
A giant ocean wave created by an earthquake called tsunami.
The force of the wind makes waves.
Great Waves
a. Hurricane force winds make waves higher than houses, but this waves are smaller than
tsunami.
b. Tsunami is a giant wave caused by an earthquake under the ocean. It can be 30 metres
high. When reaches the shore, it washes away people and animals and destroys houses.
Lesson: Pollution at Sea
Pollution spoils the environment, harms wildlife and can spread disease.
Causes of Pollution
1. Poisonous Chemicals – concentrate in fish and harm people
2. Plastic bags – chokes a turtle
3. Oil Slick – sticks to birds’ feathers
4. Sewage – spreads cholera
Lesson: Energy
Energy makes things happen.
Energy is the ability to do work.
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
Forms of Energy
Energy Sources
a. electricity
a. fuel
b. light
b. electricity
c. movement
c. the sun
d. sound
d. wind and wave
e. heat
e. food
f. elastic
Heat and light from the sun supply the energy for life on Earth.
When we use energy, we transform energy from an energy source into kind of
energy we need. We use different machines and devices to do this.
Solar Energy is the energy from the sun.
Two main forms of Solar Energy
a. light energy
b. heat energy
Lesson: Sounds
Our world is full of sounds.
Sound is a kind of energy that travels into our ears as waves. Sounds are made when something
vibrates.
Vibration is rapid to-and-fro movement.
Whenever something vibrates, it produces sounds, sounds are made by
vibrating objects
Sounds travel through the air to our ears.
Sound wave is the up and down changes in pressure travel through the air.
A sound can be loud or soft.
A soft sound is quiet and made bay small vibration.
A large vibration makes a loud sound.
Lesson: Solar System
The sun is a star, a huge ball of burning gas.
Eight planets and sun make up the solar system.
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
List of planets according to their distance from the sun
1. Mercury is the closest planet to the sun and the smallest planet.
2. Venus is about the same size as Earth. It covered with a thick atmosphere of hot poisonous gas.
3. Earth is our home planet, the third planet from the sun.
4. Mars also called as red planet, it is smaller and colder than the Earth.
5.Jupiter is the biggest planet in the solar system with a giant red spot.
6. Saturn is the second biggest planet, surrounded by beautiful rings.
7. Uranus
are giant blue-green gas balls.
8. Neptune
The Solar System
Asteroids are huge lamps of rock in space.
Comet is a ball of ice and dust that travels in a long narrow orbit around the sun.
Meteoroids are countless smaller pieces of dust, rock and metal between the planets.
Meteor is a meteoroid burning up, also called shooting star.
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
Revision Questions
I. Box the correct answer.
1. ________ is a tiny particle.
a. Crystal
b. Quartz
c. Grain
2. We need ________ to grow crops.
a. soil
b. boil
c. ocean
3. Aluminum is a light silvery ________.
a. stone
b. rock
c. metal
4. ________ are branches of ocean.
a. Seas
b. Plants
c. Erosion
5. ________ is the material at the centre of the Earth.
a. Crust
b. core
c. mantle
II. Write T if is correct and F if wrong.
______ 1. Metamorphic means changed.
______ 2. Ocean is a large natural stream of flowing water.
______ 3. Rocks are all around us.
______ 4. Earth is a planet.
______ 5. Mantle is the outer layer of the Earth
______ 6. Bricks are made from rocks.
______ 7. Water freezing carry rock particles that weather the rock into pieces.
III. Write the meaning of the following words.
1. comet ______________________________________________________
2. meteor _____________________________________________________
3. asteroids ___________________________________________________
4. River ______________________________________________________
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
‫‪IV. Write the following.‬‬
‫‪Continents‬‬
‫‪Great Oceans‬‬
‫________________ ‪1.‬‬
‫________________ ‪1.‬‬
‫________________ ‪2.‬‬
‫________________ ‪2.‬‬
‫________________ ‪3.‬‬
‫________________ ‪3.‬‬
‫________________ ‪4.‬‬
‫________________ ‪4.‬‬
‫________________ ‪5.‬‬
‫________________ ‪5.‬‬
‫________________ ‪6.‬‬
‫‪Layers of the Earth‬‬
‫‪Three Types of Rock‬‬
‫________________ ‪1.‬‬
‫________________ ‪1.‬‬
‫________________ ‪2.‬‬
‫________________ ‪2.‬‬
‫________________ ‪3.‬‬
‫________________ ‪3.‬‬
‫‪V. Draw and label the layers of the Earth.‬‬
‫‪Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.‬‬
‫مالحظة‪ :‬المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‪،‬وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬
‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‪.‬‬
VI. Label the Earth’s crust.
VII. Underline the objects that uses electricity.
VIII. Check (√) the picture that shows care in the environment.
IX. Write the properties and examples of types of rock.
a. Igneous Rock
Examples_______________,_______________
Properties___________________________________________________
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬
b. Sedimentary Rock
Examples_______________ ,_______________
Properties___________________________________________________
c. Metamorphic Rock
Examples_______________, ______________
Properties___________________________________________________
X.
Label the planets according to their distance from the sun.
S
U
E
J
M
M
V
N
S
Note: This material is only a summary of chapters for revision. Student must study from the given syllabus also.
‫وهي فقط أمثلة توضيحية لبعض صياغات األسئلة الواردة عن بعض الموضوعات الرئيسية في المنهج وارشادات عن كيفية‬،‫ المعلومات الواردة في هذه الوثيقة ال تحدد ما سيتم تناوله في االختبار بعينه‬:‫مالحظة‬
.‫التعامل معها فيجب على الطالب الدراسة من المقرر المرفق‬