BRILLIANT COACHING
Class-8 SA-2 Science(Hots Paper)
1. Define any five of the following terms : (a) CONSTELLATIONS
( b) COMETS
(c) REGULAR REFLECTION
(d)ELECTROPLATING
(e) GRAVITATIONAL FORCE
(f) PRESSURE
(g) ATMOSPHERIC PRESSURE
(h) MENSTRUATION
(I) ROLLING FRICTION
(J) OSCILLATION.
2. Fill in the blanks :
(a) Asteroids are found between the orbits of _________ and _________
(b) The size of the pupil becomes ____________ when you see in dim light.
(c) The unit of frequency is..........................
(d) Sprinkling of powder on the carrom board ________ friction.
(e) The north pole of a magnet ———— the north pole of another magnet.
3. Tick the correct answers :
(i) Which of the following is NOT a member of the solar system?
a) An asteroid (b) A satellite (c) A constellation (d) A comet
(ii) Image formed by a plane mirror is
(a) virtual, behind the mirror and enlarged
(b) virtual, behind the mirror and of the same size as the objet
(c) real at the surface of the mirror and enlarged
(d) real, behind the mirror and of the same size as the object.
(iii) Which of the following voices is likely to have minimum frequency?
(a) Baby girl (b) Baby boy (c) A man (d) A woman
(iv) Reproductive age in women starts when their
(a) menstruation starts. (b) breasts start developing. (c) body weight increases. (d) height increases.
(v) A collection of large stars in the sky is known as
(a)galaxy (b) satellite (c) constellation (d) comet.
4. Explain how you can locate the Pole Star with the help of Ursa Major.
5. Define Reflection and State the laws of reflection..
6. Sometime, a crackling sound is heard while taking off sweater during winters. Explain.
7. Does pure water conduct electricity? If not, what can we do to make it conducting?
8. Explain in what way noise pollution is harmful to humans.
9. Give examples to show that friction is both a friend and a foe.
10. Define force and write the effects of force.
11. A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?
12. Define Puberty and List changes in the body that take place at puberty.
13. What are sex hormones? Why are they named so? State their function.
14. Do all the stars in the sky move? Explain.
15. Define multiple reflection reflection and write its applications .
16. What are the factors affecting friction? Explain with examples.
17. Why are cars, airplanes & rockets streamlined?
18. Why is pituitary glands called “master glands”?
19. Which planet is known as morning and evening star,why is it so called.
20. What Is the function of endocrine gland.
Class-8 SA-2 Science(Hots Paper)
1. Define any five of the following terms : (a) CONSTELLATIONS
( b) COMETS
(c) REGULAR REFLECTION
(d)ELECTROPLATING
(e) GRAVITATIONAL FORCE
(f) PRESSURE
(g) ATMOSPHERIC PRESSURE
(h) MENSTRUATION
(I) ROLLING FRICTION
(J) OSCILLATION.
2. Fill in the blanks :
(a) Asteroids are found between the orbits of _________ and _________
(b) The size of the pupil becomes ____________ when you see in dim light.
(c) The unit of frequency is..........................
(d) Sprinkling of powder on the carrom board ________ friction.
(e) The north pole of a magnet ———— the north pole of another magnet.
3. Tick the correct answers :
(i) Which of the following is NOT a member of the solar system?
a) An asteroid (b) A satellite (c) A constellation (d) A comet
(ii) Image formed by a plane mirror is
(a) virtual, behind the mirror and enlarged
(b) virtual, behind the mirror and of the same size as the objet
(c) real at the surface of the mirror and enlarged
(d) real, behind the mirror and of the same size as the object.
(iii) Which of the following voices is likely to have minimum frequency?
(a) Baby girl (b) Baby boy (c) A man (d) A woman
(iv) Reproductive age in women starts when their
(a) menstruation starts. (b) breasts start developing. (c) body weight increases. (d) height increases.
(v) A collection of large stars in the sky is known as
(a)galaxy (b) satellite (c) constellation (d) comet.
4. Explain how you can locate the Pole Star with the help of Ursa Major.
5. Define Reflection and State the laws of reflection..
6. Sometime, a crackling sound is heard while taking off sweater during winters. Explain.
7. Does pure water conduct electricity? If not, what can we do to make it conducting?
8. Explain in what way noise pollution is harmful to humans.
9. Give examples to show that friction is both a friend and a foe.
10. Define force and write the effects of force.
11. A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?
12. Define Puberty and List changes in the body that take place at puberty.
13. What are sex hormones? Why are they named so? State their function.
14. Do all the stars in the sky move? Explain.
15. Define multiple reflection reflection and write its applications .
16. What are the factors affecting friction? Explain with examples.
17. Why are cars, airplanes & rockets streamlined?
18. Why is pituitary glands called “master glands”?
19. Which planet is known as morning and evening star,why is it so called.
20. What Is the function of endocrine gland.
