Science Class 3 Notes
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Some Important Science MCQs
(1) Can you name some shining bodies that you see in the sky at night?
Ans: Some shining bodies that we can see in the sky at night are: (i) Stars (ii) Comets (iii) Meteors (iv) Asteroids (v) Planets etc.
(2) What is the universe?
Ans: The vast space in which all the planets, stars, comets, meteors, asteroids etc are present, this vast space is called universe.
(3) What is a star?
Ans: The big burning ball of gases, present at a large distance from our earth and emits light, such burning ball of gases is called star.
(4) What is a planet?
Ans: A big body that moves around the sun is called a planet. Eight planets move around the sun, which make up the solar system eg. our earth is a planet.
Commemt their Amswer If you Know its Amswer
(i) Sound travels slower than.
(a) Train (b) Man (c) Light (d) Aeroplane
(ii) Light travels through.
(a) Stone (b) Wall (c) Floor (d) Space
(iii) The straight path of light is called a.
(a) Image (b) Rays (c) Reflection (d) Difriction
(iv) Many rays of light make up a.
(a) Sea of light (b) Ray of light (c) Beam of light (d) Table
(v) Bouncing back of light is called.
(a) Refraction (b) Reflection (c) Difraction (d) Friction
(i) The earth’s orbit round the sun takes.
(a) 165 days (b) 24 days (c) 365 days (d) 100 days
(ii) The largest planet is.
(a) Mars (b) Venus (c) Jupiter (d) Earth
(iii) A very cold planet which is far away from the sun is.
(a) Uranus (b) Saturn (c) Neptune (d) Pluto
(iv) In special tanks astronauts carry.
(a) Hydrogen (b) Nitrogen (c) Oxygen (d) Helium
(v) Tiny pieces of rock from outer space that do not burn up completely before falling to the ground are.
(a) Meteorites (b) Asteroids (c) Comets (d) Meteor
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