Governorate
Nozha Directorate of Education
Nozha Language Schools
“Ismailia Road” Branch
Department: Science
Form : 6th primary
Sheet
Unit One
Lesson (1) Types of levers
A- Complete:
1- …………… is a rigid bar that rotates around a fixed point called
………… and is affected by …………. and ……………..
2- ……………. is a fixed point that the bar rotates on.
3- Levers can be classified into ………… types.
4- In levers of first order the …………. is located between the ……….. and
the …………...
5- In the levers of third order, the ………… located between the …………..
and the…………..
6- The bottle opener and wheel barrow are levers of the ……….. kind,
while the pliers are levers of the ………… kind.
7- The pincers are from the levers of ………. class while the ice holder is
from the levers of the ……….. class.
8- The nutcracker is a lever of ……….. class, while the scissors are a lever
of ………. class.
B- Choose
1- The effort lies between resistance and fulcrum in the.
( Wheel borrow
– pincers – hammer
– sugar holder ).
2- Fulcrum is located between resistance and effort in the ………..
( Nutcracker
– ice holder
– Scissors
1
– bottle opener ).
C- Give reason for:
1- The seesaw is a lever of first class.
………………………………………………………………………
………………………………………………………………………
2-Levers are very important in our daily life .
………………………………………………………………………
………………………………………………………………………
D- Put ( √ ) or ( × )
1- Second class levers has a force between the resistance and the fulcrum.
( )
2- The crowbar is an example of first class levers
( )
3- From the functions of levers is decreasing the speed .
( )
4- Archimedes is a Greek scientist , he is the first scientist described the
lever .
(
)
E- What is meant by :
1- Fulcrum …………………………………………………………………….
…………………………………………………………………………………
2- Levers ………………………………………………………………………
…………………………………………………………………………………
F- Mention three of the most important benefits of levers
1- ……………………………………………………………………………..
2- ……………………………………………………………………………..
3- ……………………………………………………………………………..
2
Lesson (2) : Law of levers
A- Complete:
1- The forceps are lever of the third order in which the …………. is longer
than ……………………..
2- Levers of second type save effort because effort arm is always ………..
Than resistance arm
3- The levers of first type save effort when the ………… is longer than the
………….
B) What happens when :
1- The force arm and the resistance arm are equal .
………………………………………………………………………………
2- The resistance force is larger than the effort force .
………………………………………………………………………………
C) Choose
1- When the arm of force is longer than the arm of resistance , the effort
force is ……… the resistance .
( larger than – smaller than – equal to )
2- The effort force and the resistance force is measured in ………….. .
( hertz –
Newton –
meter )
D- Give reason for:
1- Some times the first class levers conserve effort .
………………………………………………………………………
………………………………………………………………………
2- The force doesn't equal the resistance in the second class lever
………………………………………………………………………
………………………………………………………………………
E) Write the scientific term :
1- Force × its arm = resistance × its arm .
[…………………….]
2- A type of levers that always conserves effort .
[…………………….]
3- The type of levers , where the effort force is always longer than the
resistance force .
[…………………….]
3
F) Problem :
- The length of the force arm of a crowbar is 100 cm and the length of the
resistance of is 15 cm .
If the value of resistance equals 400 Newton , calculate the value of effort
force and mention the type of lever .
………………………………………………………………………
………………………………………………………………………
G) Complete the following table :
Force
Force arm
Resistance
Resistance arm
…………….
10
2
20
4
10
4
……………..
4
Unit.2
Lesson (1) : Electric energy
I- Complete:
1- ……………. is the main source of heat & light
2- ……………. A tool that converts electric energy to light
3- The first scientist who invented the electric lamp was ……………. .
4- The filament of the light bulb is made of …………, because it has high
…………………
5- The electric lamp connected to the electric circuit by ……….. , …………
6- We fill the lamp with ………. gas to stop combustion.
II- Write the Sc. Term:
1- An inert gas that is found in the glass bulb of electric lamp.
[
]
2- The most popular source of artificial light in all houses .
[
]
3- An inert gas isn't used in making the fluorescent lamp but these types of
lamps are known with the gas name .
[
]
4- The part of lamp which protects the filament from burning by isolating
the air
5- The lamp which has 2 filament of tungsten.
[
[
]
]
III- What's the function of :
1- The filament of tungsten in the glass bulb .
………………………………………………………………………………..
2- The glass bulb in the light bulb .
………………………………………………………………………………..
IV- What happens in the following cases :
1- Turning off one light bulb in an electric circuit contains many lamps
connected in series .
………………………………………………………………………………..
2- One of electric lamps burns out , while it is connected in parallel with
others .
……………………………………………………………………………….
5
V- Write the label:
1-…………………
2- …………………
3- …………………
4- …………………
5- …………………
VI) Look at the figure in front of you then answers :
1- In this case , the simple circuit is ……………….
thus the electric current passes through .
2- In case that any of these parts is not connected
, the ………….. doesn't pass through the circuit .
3- Write the labels in the figure
1) …………………..
2) …………………..
3) …………………..
4) …………………..
5) …………………..
6) …………………..
6
Lesson (2) : Danger of electricity.
I- complete:
1- Iron is considered as an electrical ……………. , while wood is
considered as an electrical ………………… .
2- The harms of electric shock depend on ………. & …………
3- Electricity is used to lighten ……………… and …………… .
II- Mention some of important precautions when dealing with electricity
( only 3 points )
a) ………………………………………………………………..
b) ………………………………………………………….……..
c) ………………………………………………………….……..
III - Give reason for:
1- The electric heater must not be placed close to furniture or rugs .
………………………………………………………………………………
2- Electricity can cause danger.
……………………………………………………………………………….
3- We must place a piece of plastic in the socket.
………………………………………………………………………………
4- Water is not used to put out electric fires .
………………………………………………………………………………
5- You have an electric shock if you touch a source of electricity.
………………………………………………………………………………
IV- Write the scientific Term:
1- A closed path that the electric current passes in.
[
]
2- It’s caused by neglected the safety precautions that have to be followed
while dealing with electricity.
[
7
]
3- The materials that allow the electric charges to flow through them .
[
]
4- The materials that don’t allow the electric charges to flow through them .
[
]
V- What happens it:
1- If you touch a source of electricity which your hands.
………………………………………………………………………………
2- A piece of glass is inserted in a closed electric circuit .
………………………………………………………………………………
3- If we place several connections in the same socket.
………………………………………………………………………………
VI- Put ( √ ) or ( × ) and correct the wrong one :
1) Electric shock occurs as a result of passing an electric current through
human body .
2) Fires resulted from electricity are extinguished by water .
8
(
)
(
)
Unit Three
Lesson (1) : Solar eclipse
A- Complete:
1- ………… Occurs when earth, moon and sun are nearly on one straight
line with the moon in the middle.
2- ………… hides the sunlight from us and a ………. Of the moon is
formed.
3- There are three types of solar eclipse which are ………….,………… and
………….
4- Doctors warn of ……………. as its rays ……….. and can lead to
…………… within few minutes.
5- When the earth lies in the semi – shaded area of the moon , we can see a
……………. of the sun what's known as ………………
B- Correct the underline words :
1- In the semi-shaded area of the moon , we can see a part of the sun forming
the total solar eclipse .
2- The semi- shadow is called umbra .
3- The solar eclipse always occurs at night .
C- Identify the astronomical phenomena in the following figure then
answer :
1- What does the figure show ?
……………………………………..
2- Label it .
1) …………………..
2) …………………..
3) …………………..
4) …………………..
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Lesson (2) : The lunar eclipse
A- Complete:
1- Lunar eclipse occurs when earth hides ……….. or apart of it from
moon at a rate of ……….. lunar eclipses per year.
2- When the earth comes between moon and sun, lunar eclipse will be
……………….
3- The lunar eclipse becomes ………… if the moon falls in the penumbra
area.
4- There are two types of lunar eclipse which are ……….. and ……………
5- The lunar eclipse occurs in ………… of lunar month.
6- We can see …………….. when the sun is behind the horizon at night ,
where…………… always occurs at the morning .
7- Solar eclipse does not last more than …………. minutes and ……….
. Seconds , whereas the duration of ………….. eclipse last for more than two
hours .
8- The color of the moon tends to be …………….. during the start of the
…………… lunar eclipse .
B- Put ( √ ) or ( × )
1- Two phenomena of lunar and solar eclipse are repeated regularly and can
be predicted .
(
)
2- When the cone shadow doesn’t reach earth surface so annular solar
eclipse can be observed .
(
)
3- We can observe the lunar eclipse with naked eye .
(
)
4- The lunar eclipse occurs in the morning .
5- The time of solar eclipse is less than the time of lunar eclipse.
(
(
)
)
C- What happen when :
1) The moon comes in an orbit higher from earth .
…………………………………………………………………….…………..
2)The moon enters the earth's umbra .
…………………………………………………………………………………
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D- Write the scientific term :
1- Rays that can't be absorbed from above the atmosphere to the earth , that
causes red color of the moon in the start of lunar eclipse . [……………]
2- The Earth's shadow in which total lunar eclipse is formed . [……………]
E- Correct the underlined word :
1) Lunar eclipse occurs in the middle of the lunar month two times a month .
2) The phenomenon of the lunar eclipse occurs in the end of the lunar month
3) The solar eclipse occurs when the earth comes between the moon and the
sun .
F- The following figure represents an astronomical phenomenon :
1- What's the name of this phenomenon ?
……………………………………………………………………………..
2- Label the figure :
1) ………………
2) …………………
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3) ………………..
Lesson (3) Observing space
A- Complete :
1- ………………..was the first scientist who made astronomical telescope by
himself in 1609 .
2- Earth is from ………….. planets , while Jupiter is from the ……….. planets
3- The length of Hubble telescope is …………….. .
4- Our galaxy is called …………….. and it has a ………… shape .
5- Places where astronomers work and where …………..are kept in side are
called ……………..
6- Hubble telescope uses ……………. to collect light .
B- Write the scientific term :
1) A celestial system consists of 200 billion stars .
[…………………]
2) The most famous space monitoring telescope .
[…………………]
3) The first satellite that was launched successfully in an orbit around the earth
[…………………]
C- Define :
Telescope………………………………………………………………………
…………………………………………………………………………………
D- Choose the correct answer :
1- Galileo used …………. To make his telescope .
a- mirrors
b- lenses
c- aluminum
2- All the following are from the huge gaseous planets except …………..
a- Venus
b- Neptune
c- Saturn
d- Uranus
3- We can study the stars by looking at them using ……………… .
a- telescope
b- microscope
c- naked eyes
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Unit. 4
I- Complete:
1- The plants takes ………..,……….. from the air ,……..…….. From the
soil , with the presence of light , then plant forms its food by the ………..
process .
2- Absorbing minerals & water from the soil occurs by …………. in the
root.
3- The root systems composed of …………. &………….
4- The root hair extend from the …………. and is lined from in side with a
thin layer of …………..
5- In the plant water passes into tissue of ……….. where ………..the juice
is raised to reach the stem of plant and leaves , then the other .
6- the process of allowing some salts to pass according to the plants need is
called ………..….
7- The vital process by which the plant gets rid of water is called …………
II – Write Scientific Term:
1- It fixes the plant in soil and prevent the soil erosion .
[
]
2- Cells in plant root which regulates water crossing into a xylem tissue .
[
]
3- The openings in the plant leaves to get rid of water in the form of water
vapor
4- The two cells which surround the stomata .
[
]
[
]
5- A process contributes in water and dissolved substance transmission to
top of the plant .
[
]
6- The transfer of water from high concentration area to low concentration
area through semi – permeable membrane .
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[
]
III- Give reason for :
1- The root system in plant is subdivided and extended through soil
particles .
…………………………………………………………………..
2- Stomata are very important for plant .
…………………………………………………………………..
3- Root hair has a concentrated solution more than the soil solution.
…………………………………………………………………..
4- The age of root hair doesn't exceed few days .
…………………………………………………………………..
5- The root hair secretes sticky substance.
…………………………………………………………………..
6- The root hairs are of thin walls .
…………………………………………………………………..
IV- What happens if :
1- The root hair doesn’t secrete sticky substance.
…………………………………………………………………………
2- The leaves don’t have stomata.
…………………………………………………………………………
3- The plant doesn’t make photosynthesis.
…………………………………………………………………………
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Cairo Governorate
Nozha Directorate of Education
Nozha Language Schools
Ismailia Road
Subject: ُScience
Form : 6th Primary
Mid Term Exam.
March, 2012
٢٠
Class
........................................../‫اﺳﻢ اﻟﺘﻠﻤﻴﺬ‬
Serial
1st Question :
A) Complete the following statements:1- ………………………..……… and ………………………. from the dangers 10 Marks
of electricity .
2- …………………… is an example of the first class levers while ………………… is an
example of the second class levers .
3- The fluorescent glass tube contains ………………. gas and a little of ……………….
B) Match from column ( B ) what is suitable for column ( A ) :(A)
1234-
Lever
Electric load
Electric current
Solar eclipse
(B)
a- is a flow of electric charges through a conductor .
b- occurs when the moon is located between sun and
Earth on one straight line .
c- occurs by connecting more than one machine to one
socket .
d- is a rigid bar that rotates around a fixed point .
2nd Question :
A) Write the scientific term:10 Marks
1- The main source of light .
[…………………………..]
2- The materials that don’t allow the flow of electricity through it.[……………………....]
3- A type of solar eclipse is formed in the shadow area of the moon in which the sun
can’t bee seen completely .
[…………………………..]
4- Levers that have the force between the resistance and the fixed point .
[…………………………..]
B ) Correct the underlined words:1- The base of the light bulb has a piece of glass for connection .
2- The annular solar eclipse occurs when the moon lies in the lower orbit from the Earth
in front of the sun .
3- The manual broom is considered as a second class lever .
4- To avoid danger of electricity , we have to insert a metal object in the socket .
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3rd Question :
10 Marks
A) Choose the correct answer:1- The inner tube surface of the fluorescent lamp is covered with ……………. material .
a- neon
b- lead
c- copper
d- phosphoric
2- ……………….. is good conductor of electricity .
a- Iron
b- Glass
c- Wood
d- Plastic
3- If the resistance arm is longer than the force arm , the resistance will be ……….. than
the effort force .
a- smaller
b- larger
c- equals
d- a and c
4- The moon revolves around the Earth in ………………. orbit .
a- circular
b- oval
c- rectangular
d- spherical
B) Give reason for :
1- The second class levers conserve the effort .
………………………………………………………………………………
………………………………………………………………………………
2- It is preferred to connect the lamps at home in parallel .
………………………………………………………………………………
………………………………………………………………………………
C) What is the importance of :
1- Special glasses during observing the solar eclipse .
………………………………………………………………………………
4th Question :
10 Marks
A) Put ( √ ) or ( × ) :-
1- The electric chock happens when the body is a part of an opened electric circuit .(
)
2- The solar eclipse phenomenon doesn’t last more than 14 minutes and 7 seconds .(
)
3- The semi-shadow area is called “umbra” .
(
)
4- The force and the resistance can be equal only in the second class lever .
(
)
B) If the effort force equals 20 Newton and length of its arm is 100 cm . Calculate the
value of the resistance if the length of the resistance arm is 50 cm .
…………………………………………………………………………………………..
…………………………………………………………………………………………..
…………………………………………………………………………………………..
C) Write the labels :
1
1- …………………………………
2- …………………………………
3- …………………………………
2
Good Luck
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