عشرة نماذج امتحانات لمادة العلوم للصف الثالث الاعدادي لغات طبقا لاخر تعليمات وزارة التربية والتعليم لامتحانات الفصل الدراسي الأول
(1)Model
Choose the correct answer
1-distance covered in a unit of time (in one sec) is ................
a. displacement b. Speed. c. velocity. d. acceleration
2- …………..is the point that is in the middle of the reflective surface of the mirror.
a. Pole. b. Optical center c. Focus. d. Radius
3- ……………. is the wide space that contains galaxies and everything.
a. Planets b. Moon. c. Solar system d. Universe
4-Asexual reproduction in yeast fungus take place by…………..
a-budding b-gametes c-binary fission. d-regeneration.
5- During the motion of a train, it covers 140 m in the 1st minute, 100 m in the 2nd minute. So the average speed of the train is ……………m/sec
a.5 b.1 c. 4 d. 2
6- The crossing over happen in …………….
a-telophase b-anaphase 2 c-metaphase d-prophase1
Model ( 2 )
Choose the correct answer:
1-Measuring the speed of an object depends on the position of the observer.
a. displacement b. Relative speed c. velocity d. acceleration
2- A mirror that its reflecting surface is a part of the inner surface of the sphere.
a. Plane Mirror b. Convex mirror c. Concave mirror d-Diverging mirror.
3- The scientist who established the Nebular theory is ………….
a-Newton b-Laplace c- Moltun d-Chamberlain.
4- During the mitotic division of a body cell 3 times, it will produce ………..cells.
a.4 b. 6 c.8 d. 10
5- A car starts its motion from rest and moves in a straight line by increasing acceleration= 2m/sec2, So the time needed to reach the speed = 40 m/sec is ……………sec.
a.5 b.10 c.15 d.20
6- The sexual reproduction involves ………… parents.
a- 1 b- 2 c- 3 d-4
Model ( 3 )
Choose the correct answer:
1-...............is the quantity that has a magnitude and direction.
a. Scalar b. Vector c-Distance d-Speed
2- Is the straight line that passes by the center of curvature and the pole of the mirror.
a. Focus b. Image c. Principle axis d. Secondary axis
3- The two elements that were produced after the big bang.
a. H & Hg b. Na & He c. Fe & H d. H & He
4- The meiosis division happen in …………. Cells.
a-liver b-ovary c-testis d-ovary and testis.
5-If an object moved east for 10 m then moved west for 2 m, so the displacement is equal ……………… m
a. 2 b. 6 c. 8 d. 10
6-…………. is formed when male and female gametes combine together.
a- Sperm b- Ovum c-Zygote d- Pollen grain
Model ( 4 )
Choose the correct answer:
1- The length of the shortest straight line between 2 points.
a. displacement b. Speed c. velocity d. acceleration
2-Convex lens is placed in passage of sun rays, a very small image is formed at a distance 10 cm. The same lens is used to obtain virtual, enlarged and erect image of a body. In which distance the body is found?
a-5 cm b-10 cm C-15 cm D-20 cm
3- …………………is a flat gaseous disc that formed our solar system.
a-Galaxy b-Earth c-Moon d- Nebula
4- .............is the process in which the living organism produces individuals identical in genetic traits of the parent.
a-Fertilization b-Gamete formation c-Asexual reproduction d-Meiosis
5- A car moves at speed 36 km/hour. So the distance by meter that covered in 5 seconds is ...........m/sec
a.30 b. 40 c. 50 d.60
6- .................is a cellular division that produces sperms and ova.
a. Mitosis b. Meiosis c. Budding d. Regeneration
Model ( 5 )
Choose the correct answer:
1- The change in the object’s speed in one second is .................
a. displacement b. Speed c. velocity d. acceleration
2- The short-sighted person needs a medical eye glasses with ………..
a. concave lens b. convex lens c. concave mirror d. convex mirror
3- A great explosion and expansion since 15000 million years that forms the universe.
a. Big bang b. Crossing star c. Nebula d. Galaxy
4- the ability of the animal to compensate its missing parts.
a. Spores b. Binary fission c. Budding d. Regeneration
5- A phase in which chromosomes are arranged along the cell equator.
a. Prophase b. Metaphase c. Anaphase d. Telophase
6- An object is placed in front of a concave mirror at a distance less than double the focal length, and more than the focal length, so the properties of the image formed are ………….
a. virtual , enlarged image b. real , small image
c. real , enlarged image d. virtual , small image
Model ( 6 )
Choose the correct answer:
1- ...............is the ratio between the total distance and total time of an object.
a. Displacement b. Average speed c. Average velocity d. Acceleration
2- If the focal length of a convex lens =10 cm so its radius will be …. cm.
a.5 b. 10 c.15 d. 20
3- Stars move in fixed orbits around the Centre of the ……………
a. Solar system b. Crossing star c. Nebula d. Galaxy
4- It is the combination of male and female gametes to form a zygote.
a. Fertilization b. Binary fission c. Budding d. Regeneration
5- A phase in which some important vital processes occur that prepare the cell for division and the genetic material is duplicated.
a. Prophase b. Metaphase c. Anaphase d. Interphase
6- On a straight line their is a moving bus whose speed changes from 6 m/s To 12 m/s during 3 seconds. So the acceleration= ...............m/sec2
a. 1 b. 2 c. 3 d. 4
Model ( 7 )
Choose the correct answer:
1- The (speed-time) graph of uniform speed is represented by a straight line parallel to the ............ axis.
a. Speed b. distance c. time d. displacement
2- A parallel light ray to the principle axis of a concave mirror will reflect through …………
a. Pole b. Optical center c. Focus d. Radius
3- In metaphase …………… are arranged along the cell equator.
a. Chromatids b .Chromosomes c .Gametes d. Spores
4-Milky way is a ………………….galaxy.
a. spherical b. oval c. spiral d-No correct answer
5-Gametes contain ………….. the number of chromosomes that is found in the somatic cell.
a. Same b. half c. quarter d. double
Model ( 8 )
Choose the correct answer:
1-............is the value of displacement at a unit time and it is a vector quantity.
a. displacement b. Speed c. velocity d. acceleration
2- If the angle between the incident ray and the reflecting surface is 20 so the angle of reflection equals …………….
a.50 b.60 c.70 d.80
3- The origin of the planets of the solar system according to the crossing star theory is the ……
a. Sun b. Meteors c. Nebula d. Galaxy
4- The chromosomes chemically consist of ………..
a. Nucleic acid (DNA) b. proteins c. carbohydrates d. a and b
5- The object’s speed changes by equal values through equal periods of time.
a. Displacement b. Speed c. Velocity d. Uniform acceleration
6- A diseased case results due to the formation of image behind the retina of the eye.
a. Short sight b. Long sight c. Darkness of eye lens d. Cataract
Model ( 9 )
Choose the correct answer:
1- When an object moves at constant uniform speed. This means that its acceleration= .......
a.1 b. 2 c. 3 d. zero
2- The angle between the incident light ray and the normal is angle of…...
a. incidence b. reflection c. refraction d. normal
3- The solar system is located in one of the ………… of the milky way
a. Centers b. spiral arms c. galaxies d. moons
4- Bacteria and amoeba reproduce asexually by ………….
a. Fertilization b. Binary fission c. Budding d. Regeneration
5- The cells resulting from the meiotic division and have half (haploid) number of chromosomes.
a. Mitosis b. Meiosis c. Gametes d. Zygote
6-If the distance between you and your image in plane mirror is 10 m, so the distance between you and the mirror is ..............
a.5 m b. 10 m c. 15 m d. 20 m
Model ( 10 )
Choose the correct answer:
1- The actual path that is covered by the object is the ..................
a. displacement b. Speed c. distance d. acceleration
2- Image that can be formed on a screen is ………………. Image.
a. real b. virtual c. upright d. erect
3-In the modern theory of the solar system, the explosion of the star that was near the sun is due to ………………….
a. The crossing star b. big bang c. nuclear reaction d. nebula
4- The …………………. in meiosis division leads to the variation of genetic traits.
a. crossing over b. interphase c. zygote d. asexual reproduction
5- Producing a new plant by mitotic division without seeds is …………….
a. Fertilization b. Vegetative reproduction c. Budding d. Regeneration
6- A body is placed in front of a convex lens at a certain distance from its optical center, no image is formed for the object. That is due to the body is placed at ...............
a. Pole b. Optical center c. Focus d. Radius
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