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Governorate Department: Science

Nozha Directorate of Education Form : 6th

primary

Nozha Language Schools

Ismailia R oad Branch

A- Complete: Unit One

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-The effort point (E): is the point at which the affects.4-Functions that can be performed by level 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 longerthan..

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 barrow4- 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 light3-............. 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 Sc. 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 lulls ()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

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4-its preferred to connect lamps at home in parallel

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-

2-

3-

4-

5-

II-V- 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 leses of electricity.2-Electricity is dangerous to ..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 UN isolated.

5-You have an electric shock if you touch a source of electricity.

III- Write the sc. Term:

1- Its the result of an electric current passing through the human body.

()

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2- A closed path that the electric current passes in ()

3- The isolated parts that the electric current cables stretched on

()

4- Its 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 dont allow the electric charges to flow through them()

IV- What happens it:

1- If you touch a source of electricity which your hands.

2- Deal with electricity with neglected way.

3- If the injured person from electricity cant 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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A- Complete: Unit Three

1- Occurs when earth, moon and sun are nearly on one straightline with the moon in the middle.

2- hides the sunlight from us and a . Of the moon isformed.

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 effects 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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B- Compare between solar eclipse and lunar eclipse.

C- Compare between total solar eclipse, partial solar eclipse and annular solar

eclipse.

D- Compare between total lunar eclipse and partial lunar eclipse.

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 doesnt 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 for med from 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 get rid of water is called

II Write Sc. Term:

1- The tissue that transfers the water & mineral to all parts of the plants.

()

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 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 doesnt secrete sticky substance.

2-The osmotic pressure of the root hair is less than that of the soil.

3-The plant root cant respire to produce energy.

4-The leaves dont have stomata.

5-The plant doesnt make photosynthesis.