Cairo Governorate
Nozha Directorate of Education
Nozha Language Schools
“Ismailia Road” Branch
Department: Science
Form : 6th Primary
Unit ( 1 )
Lesson ( 1 ) : Type 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 around.
3- The effort point (E): is the point at which the ………… affects.
4- Functions that can be performed by lever are determined according to the
locations of the force, ……….. ,………. and according to their ...……….
5- Levers can be classified into ………… types.
6- In levers of first order the ……….…. is located between the ……….. and
the …………..
7- The levers of first type save effort when the ……..…… is longer than the
………….
8- Levers of second type save effort because effort arm is always ……...…..
than resistance arm.
9- In the levers of third order, the ………… located between the …………..
and the…………..
10- The bottle opener and wheel barrow are levers of the …………….. kind,
while the pilers are levers of the ……..…… kind.
11- The pincers are from the levers of …...……. class while the ice holder is
from the levers of the …..…….. class.
12- The nutcracker is a lever of ….…….. class, while the scissors are a lever
of …………. class.
13- The forceps are lever of the third order in which the …....……. is longer
than………..
14- …………. and ………… are examples of the first class levers.
15- …………. and ………… are examples of second class levers.
16- …………. and ………… are examples of third class levers.
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B- Look at the following figures, then determine the kind of lever and
write the name of the parts of which arrows point.
C- in the figures show:
1. what are the types of ( A )
and ( B ) levers ?
C- Choose:1- The effort lies between resistance and fulcrum in the.
( Wheel borrow – pincers – hammer – sugar holder ).
2- ………….. are examples of third order levers.
( Pincers – scissors – coal tongs – pliers ).
3- Fulcrum is located between resistance and effort in the ………..
( Nutcracker – ice holder – Scissors – bottle opener ).
D- Give reason for:
1- Man depends in his life on levers.
………………………………………………………………………
………………………………………………………………………
2- The seesaw is a lever of first class.
………………………………………………………………………
………………………………………………………………………
4- Levers of the third class do not save effort but we use them in our life.
………………………………………………………………………
………………………………………………………………………
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E- Mention the type of lever for each of the following
1- Nutcracker …………………………………..……………………………
2- Tweezers ………………………………………….………………………
3- Wheel barrow…………………………………...…………………………
4- Scissors ……………………………………………………………………
5- Cool tongs …………………………………………………………………
6- Seesaw …………………………….………………………………………
7- Pliers ……………………..………………………………………………
8- Forceps …………….………………………………………………………
F- In the opposite figure
The load and the wheel barrow
Weigh 50 kg. Weight
What force must the man exert
To move the barrow
G- 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
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( )
Unit ( 2 )
Electric energy
I- Complete:
1- ……………. is the main source of heat & light
2- ……………. a tool that converts electric energy to light
3- …................ is ………… are considered one type of light bulb.
4- The filament of the light bulb is made of …………
5- The electric lamp connected to the electric circuit by ……….. , ………..
6- We fill the lamp with ………. gas to stop combustion.
II- Write the scientific term:
1- The element which the filament of the electric lamp made of (……......……)
2- The most popular source of artificial light in all houses
(……......……)
3- The flow of electric charges through a conductor
(……......……)
4- The coiled wire which made of tungsten in the electric lamps(……......……)
5- The part of lamp which protects the filament from burning by isolating the
air
(……......……)
6- A part of the electric lamp which connects the lamp in the circuit
(……......……)
7- The lamp which has 2 filament of tungsten.
(……......……)
III- G.R.F:
1- Man invented the electric lamp.
………………………………………………………………………………
2- The electric lamp is filled with inert gas.
………………………………………………………………………………
3- the base of the lamp has 2 pieces of lead
………………………………………………………………………………
4- it’s preferred to connect lamps at home in parallel
………………………………………………………………………………
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5- The connected lamp in series has one route from electric lamp.
………………………………………………………………………………
6- Connecting lamps in series in not preferred.
………………………………………………………………………………
IV- Write the lable:
(1)
1-…………………
2- …………………
(2)
3- …………………
4- …………………
(5)
5- …………………
(3)
(4)
IIV- With drawing explain how can you connect a group of lamps in series.
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Danger of electricity.
I- Complete:
1- …………, …………... & …………. from the uses of electricity.
2- Electricity is dangerous because …………..
3- ……..,………. & ………… from the dangerous effects of electricity.
4- ……..,……… are good conductor of electricity.
5- ……..,………,……….. are bad conductor of electricity.
6- The harms of electric shock depend on ………. & …………
7- From the precautions in dealing with electricity are.
a) ………..
b) ………..
c) ………..
d) ………..
e) ………..
f) ………..
II- Give reason for:
1- Our use of electricity increases.
………………………………………………………………………………
2- Electricity can cause danger.
……………………………………………………………………………….
3- We must place a piece of plastic in the socket.
………………………………………………………………………………
4- We must not leave the wire unisolated.
………………………………………………………………………………
5- You have an electric shock if you touch a source of electricity.
………………………………………………………………………………
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III- Write the scientific term:
1- It results when an electric current passing through the human body.
(………………….…)
2- A closed path that the electric current passes in
(………………….…)
3- The isolated parts that the electric current cables stretched on
(………………….…)
4- It’s caused by neglected the safety precautions that have to be followed
while dealing with electricity
(………………….…)
5- The materials that allow the electric charges to flow through them
(………………….…)
6- the materials that don’t allow the electric charges to flow through them
(………………….…)
IV- What happens it:
1- If you touch a source of electricity with your hands.
………………………………………………………………………………
2- Deal with electricity with neglected way.
………………………………………………………………………………
3- If the injured person from electricity can’t breathe
………………………………………………………………………………
4- If we place several connections in the same socket.
………………………………………………………………………………
5-You put a source of heat near the furniture & curtains.
………………………………………………………………………………
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Unit ( 3 )
A- Complete:1- ………… occurs when earth, moon and sun are nearly on one straight
line & the moon in the middle.
2- ………… hides the sunlight from us and a ………. of the moon is
formed.
3- Solar eclipse does not last more than …………. minutes and ………..
Seconds.
4- There are three types of solar eclipse which are ……….... , ………… and
………….
5- Total Solar eclipse is ………………………………………...
6- Partial Solar eclipse is ……………………………..…….…..
7- Annular Solar eclipse is ……………………………………..
8- Doctors warn of ……………. as its rays ……….. and can lead to
…………… within few minutes.
9- Solar eclipse affects the eye in general or the …………….
10-The outer solar corona keeps on emitting ……………..…. to the eye like
………….. and …..………
11- …………. are used to observe the solar eclipse.
12- The lunar eclipse occures in ………… of lunar month.
13- Lunar eclipse occures when earth hides ………….….. or apart of it from
moon at a rate of ……….….. lunar eclipses per year.
14- There are two types of lunar eclipse which are …...….. and ……………
15- The lunar eclipse becomes ………… if the moon falls in the penumbra
area.
16- When the earth comes between moon and sun, lunar eclipse will be
……..……..
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E- Put ( √ ) or ( × )
1- Two phenomena of lunar and solar eclipse are repeated regularly and can
be predicted
2- More than one type of solar eclipse can be observed.
(
)
(
)
3- When the cone shadow doesn’t reach earth surface so annular solar
eclipse can be observed
(
)
What is meant by?
1- Partial solar eclipse. ……………………………………………………….
2- Total solar eclipse. ………………………………………………………...
3- Cone umbra. ………………………………………………………………
4- Penumbra. …………………………………………………………………
5- Annular solar eclipse. ……………………………………………………..
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Unit ( 4 )
I- Complete:
1- Green plants depend on ………..,……….. from the air …….. & ………..
From the soil
2- Plants make their own food through a process called ………..
3- …….…. , …….….. , ….……. , are the elements which the plants need in
small amounts
4- Absorbing minerals & water from the soil occurs by ……….……. in the
root.
5- The root systems composed of …………. &………….
6- The root hair is lined from in side with a thin layer of …………..
7- The root hair is lined with ………… layer.
8- The role of root hair in absorption of water & minerals.
a) …………..
b) …………..
c) …………..
d) …………..
9- The tissue which Transfers water & salts to the plant parts is called
………………..
10- Osmotic properties is …………….
11- The vital process by which the plant gets rid of water is called
………………
II – Write scientific term:1- The tissue that transfers water & minerals to all parts of the plant.
(………………….…)
2- The part of the root that responsible for absorption. (………………….…)
3- The openings in the plant leaves to get rid of water in the form of w.v
(………………….…)
4- The two cells which surround the stomata.
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(………………….…)
5- A force produced due to the lost of water which creates pressure.
(………………….…)
6- The transfer of water of high concentration to the low concentration.
(………………….…)
III- G.R.F:
1- The rises of water to the top of the plant
…………………………………………………………………..
2- Stomata are very important.
…………………………………………………………………..
3- Root hair has a concentrated solution more than the soil solution.
…………………………………………………………………..
4- The age of root hair is short ( few days )
…………………………………………………………………..
5- The root hair secretes sticky substance.
…………………………………………………………………..
IV- What happens if:
1- The root hair doesn’t secrete sticky substance.
…………………………………………………………………………
2- The osmotic pressure of the root hair is less than that of the soil.
…………………………………………………………………………
3- The plant root can’t respire to produce energy.
…………………………………………………………………………
4- Leaves don’t have stomata.
…………………………………………………………………………
5- The plant doesn’t make photosynthesis.
…………………………………………………………………………
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