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المراجعة النهائية لمنهج علوم مدارس اللغات الفصل الدراسى الثانى الصف السادس الابتدائى

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المراجعة النهائية لمنهج علوم مدارس اللغات الفصل الدراسى الثانى الصف السادس الابتدائى

مُساهمة  امينة الحوت في الثلاثاء مايو 17, 2011 3:30 am


Write the scientific term:
1- Levers that have the resistance between the effort force and the fixed point.
2- The type of eclipse that can be seen at night. 3-
An inert gas that is used in the electric lamp. 4-
The phenomenon by which water transports from the soil to the inside of the root hairs. 5- The color of the moon during the starting of the total lunar eclipse. 6-
Two cells that surround the leaf stoma. 7-
Materials that allow the electric current to pass through them. 8-
The faint outer shadow of the moon. 9-
The phenomenon that occurs two times per year in the middle of lunar month. 10- A biological process through which plants lose water in the form of vapour. 11-
The most popular levers in our daily life.
12- The solar eclipse in which the sun appears as a lighting ring.
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13- The lunar eclipse in which a part of the moon enters the earth’s umbra.
14- The material that should not be used to put out electric fires.
15- Levers that have the force between the resistance and the fulcrum.
16- A form of energy that is used in operating some machines as television.
17- Openings through which the plant undergoes the transpiration process.
18- Materials not allowing the electric current to pass through them. 19-
They are levers that have the fixed point between the effort force and the resistance force.
20- A tool used to convert the electric energy into lighting.
21- The eclipse in which the sun disappears completely.
22- The outer most layer of the plant root.
23- A coiled thin wire made of tungsten in light bulbs.
24- The process by which plants lose the excess water.
25- Something is used to observe the solar eclipse safely
. 26- The harmful rays emitted from the sun during the solar eclipse.
27- Away of connection in the electric lamps that is used to decrease the luminous intensity as their number increases.
28- The area at which the total solar eclipse appears.
29- Transmission of water molecules through semi permeable membrane from an area of high concentration of water to an area of low concentration of water.
30- The way where the bulbs are connected by branching routes.
3
Put(√) or (×): 1- The penumbra is the moon’s dark inner shadow.
2- Stomata are widely spread on the upper surface of the plant leaves.
3- There is no danger when touching an electric machine with wet hands.
4- The cone shadow of the moon is called umbra.
5- The effort is between the fulcrum and resistance in the second class levers.
6- Argon is used instead of air inside the bulb of electric lamp to protect the thick copper wires from burning.
7- Stem extends and penetrates the soil to increase the absorption process. 8- The lunar eclipse can last for seven minutes only.
9- Soda water opener is a second class lever, while the fishing tool; is a first class lever. 10- Plant stoma is surrounded by two woody cells.
11- Copper and iron are electric conductors.
12- Root hairs are continuously replaced by new ones.
13- Water is a bad conductor of electricity.
14- The lunar eclipse does not require precautions or special devices to be observed. 15- Water rises inside the plant stem through the wood tissue.
16- The rigid bar of the lever is affected by three forces.
17- Fluorescent lamp contains neon gas.
18- The glass bulb of electric lamp contains atmospheric air.
19- Root hairs extend from the cells of the endodermis layer.
20- In the third class lever, the effort force is between the resistance force and fulcrum.
4
Complete the following statements:
1-The filament of the light bulb is made of …………. And that is because it has high ………………….. 2-
The solar eclipse phenomenon does not last for more than …………
minutes and ………………… seconds.
3- ……………………… and …………………….. are from the causes of burns resulting from electricity.
4- We should not place the flammable materials such as ………… and ………… near to electric machines that generate heat such as …………. And ……………
5- The light bulb consists of ……….. , …………… and ……………….
6- Doctors advice to use ……………….. to observe the solar eclipse.
7-Tweezers are used to …………….. , while ………………. Is used to move force from place to another place.
8- ………………… eclipse is seen at the morning, while …………. Eclipse is seen at night.
9- In the plant root, the epidermis layer is followed by ……….. layer, then endodermis layer that is followed by ………. Layer, then …………. Layer.
10- The fluorescent lamp consists of …………… , ……………… and ………..
11- The midpoint in the first class lever is ………….., while ……………… is the midpoint in the third class levers.
12- Materials that allow electricity to flow through them are called ……………… 13- …………… eclipse requires safety precautions, while …………. Eclipse does not.
14- Plants get rid of excess water through …………… process, while it makes its own food through ……………………… process.
15- The lunar eclipse occurs in the …………. Of the lunar month when the moon phase is ……………….
16- The inner most layer of plant root is called ……….., while the outermost layer is called ……………………
5
17- The lighting of the light bulbs does not change if they are connected in ……….
18- ……………… system fixes the plant in the soil.
19- The electric shock occurs as a result of passing …………… through the human body. 20- The nutcracker is an example of the ..................... levers.
21-
The ..................... in plant is surrounded by two guard cells.
Give reasons:
1- Plastic is considered as an electric insulator.
2- Root hairs secrete a sticky substance.
3- The two guard cells change their shape from time to time.
4- We must not touch any electric machine with wet hand.
5- Bottle opener and stapler are second class levers.
6- There is no annular lunar eclipse.
7- Do not place any metallic object inside the electric socket.
8- We cannot see the sun completely during the total solar eclipse.
9- There are pieces of lead in the base of light bulb.
10- Each stoma is surrounded by two guard cells
. 11- Nail clipper is a first class lever.
12- The distance between the moon and the earth varies during the moon’s rotation around the earth.
13- We must not touch any electric machine with wet hand.
14- Suction pump is a first class lever.
15- Scientists can mention the times and the locations where the solar eclipse occurs.
6
16- Plant’s root is branched and extended between the soil particles.
17- The lunar eclipse does not require precautions or special devices to observe it.
18- The filament of the light bulb is made of tungsten.
19- The glass bulb in the light bulb is filled with inert argon gas.
20- You should not look directly to the sun during the solar eclipse.
21- The heater should not be placed in a touching position of textiles and carpets.
What happens when:
1-The moon lies in the earth’s penumbra.
2- The glass bulb of the electric lamp is filled with air.
3- The effort force is between the resistance force and fulcrum.
4- There are no stomata in the plant leaves.
5- A man touches an uncovered wire carrying electric current.
6- The earth prevents some light from reaching the moon’s surface.
7- Plugging several electric machines in the same electric socket.
8- The moon lies in the earth’s penumbra.
9- The root hairs do not secrete a sticky substance.
10- The filament of the bulb is made of iron.
11- The light bulb in the house is connected in series.
12- A plant is kept in the dark for a long period of time.

Best wishes 4 all

امينة الحوت

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تاريخ التسجيل : 26/04/2011

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