Our Universe-Test-2

science olympiad worksheets grade 3

Our universe

  1. Which of the following is a star?

A. Sun

B. Earth

C. Moon


  1. What kind of atmosphere will there be on the Earth, if we replace the Moon by the Sun in the Universe?

A. Extremely cold atmosphere

B. Lightening and thunderstorms

C. Boiling hot temperature

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  1. It is the second largest and sixth planet from the Sun. Identify the planet.

A. Saturn           B. Jupiter          C. Mars


  1. ____ occurs when the Earth, Moon and the Sun comes in a straight line.

A. Lunar eclipse

B. Solar eclipse

C. New moon phase


  1. The phenomenon of increase in lighted face of the Moon i.e. from new moon to gibbous to full moon is known as:

A. Waxing phase

B. Waning phase

C. None  of these


  1. The given figure of the earth represents:

A. Rotation of the Earth

B. Revolution of the Earth

C. Formation of days and nights


  1. If the weight of a boy on the Earth is 60 kg. His weight on the Moon would be:

A. 60 kg             B. 10 kg              C. 6 kg


  1. The given figure shows the position of the Sun, the Moon and the Earth. The phase of the Moon will be:

A. Gibbous        B. New moon    C. Full moon


  1. Days and night on the Earth are caused due to:

A. Revolution of the Earth around the Sun

B. Rotation of the Earth on its own axis

C. None of these


  1. Which of the following are planets:

A. Mercury        B. Sun                 C. Star

D. Venus            E. Earth


  1. Which of the following object emits light of its own?

A. Sun

B. Saturn

C. Earth

D. Star

E. Moon


  1. What causes the change of seasons on the Earth?

A. Tilted position of the Earth about its own axis

B. Rotation about its own axis

C. Revolution around the Sun

D. Revolution of the Moon around the Earth

E. None of these


  1. The imaginary line on which the Earth is tilted is known as ____

A. Equator         B. Axis                C. Hemisphere


  1. Assume that a cricket ball is an Earth, then ___ can be considered as moon in order to explain the relative sizes and massiveness of these heavenly bodies.

A. Volley ball    B. Basket ball   C. Table tennis ball


  1. ___ part of the Earth’s surface is covered with water.

A. Three-fourth

B. One-fourth

C. One half


Answer Keys:

(1)–A; (2)–C; (3)–A; (4)–A; (5)–A; (6)–A; (7)–B; (8)–B; (9)–B; (10)–(A, D, E); (11)–(A, D); (12)–(A, C); (13)–B; (14)–C; (15)–A