نماذج اختبارات الكترونية ساينس science نهائية - ثالثة اعدادي -ترم اول

هذه معاينة نصية للأسئلة للاطّلاع والمراجعة فقط. لخوض الاختبار تفاعليًّا مع تصحيح آلي ونتيجة فورية، اضغط زر «ابدأ الاختبار» أدناه.

1. In Milky Way galaxy, the old stars (the older) gather in the….. of the galaxy.
   • أ. Centre
   • ب. end
   • ج. north
2. Mass is considered from… … physical quantity
   • أ. Scalar
   • ب. physical
   • ج. standard
3. Within minutes of Big Bang, hydrogen gas was formed by a percentage of ...........%
   • أ. 75
   • ب. 50
   • ج. 25
   • د. 100
4. If the number of chromosomes in liver cells of a certain living organism is (32) chromosomes then the number of chromosomes in ovum cell is.....
   • أ. 16
   • ب. 8
   • ج. 24
   • د. 32
5. The optical piece which forms laterally inverted (reversed) image and equal to the body is .......
   • أ. plane mirror
   • ب. convex lens
   • ج. concave lens
   • د. spherical mirror
6. A train moves at a speed (100 km/h), then it cover a distance of (40 km) within time .......... hours.
   • أ. 0.4
   • ب. 0.5
   • ج. 0.6
   • د. 0.3
7. A train moves at a speed (100 km/h), then it cover a distance of (40 km) within time .......... hours.
   • أ. 0.4
   • ب. 0.5
   • ج. 0.6
   • د. 0.3
8. Calculate the actual speed of the car whose relative speed is (80 km/h) relative to an observer moving in opposite direction at a speed of (30 km/h)
   • أ. 50 km/h
   • ب. 80 km/h
   • ج. 30 km/h
   • د. 40 km/h
9. A mirror, always forms a diminished image for the object.
   • أ. Convex mirror
   • ب. Concave mirror
10. Sudden violent nuclear reactions occur within the star which led to its explosion
    • أ. True
    • ب. False
11. A moving car covers a distance of (.........) through (150 min.), then its speed is 80 km/h
    • أ. 200 kilometer
    • ب. 100 kilometer
    • ج. 400 kilometer
12. A train moves at a speed (30 m/sec). And when the brakes is used it moves with a decelerating (3 m/sec2). Calculate the time taken to stop the train
    • أ. 10 Sec
    • ب. 20 Sec
    • ج. 5 Sec
    • د. 15 Sec
13. Reproduction by sporogony occurs in bread mould Fungus
    • أ. True
    • ب. False
14. An object is placed at a distance of (8 cm) from a concave lens has a focal length (2 cm),Mention the properties of image formed
    • أ. virtual, erect and diminished.
    • ب. real, erect and diminished.
    • ج. real, inverted and diminished.
15. The focal length of a lens It is the distance between the principal Focus and the optical centre of the lens .
    • أ. True
    • ب. False