1) Which activity causes a low breathing rate? a) b) c) d) 2) Which of the following, has breathing organs that are similar to the animal above? a) b) c) d) 3) Which of the following animals is an invertebrate with legs? a) b) c) d) 4) What principle of light is used? a) Refraction of light b) Bouncing light c) Light travels in a straight line d) Reflection of light 5) Which animal can hear ultrasonic sound waves? a) b) c) d) 6) What is the use of the above apparatus which uses the Sun as the energy source? a) Produces oil resources b) Produces natural gas resources c) Transforms solar energy into electric energy d) Simplifies carpentry work 7) Which of the following objects is an electric conductor? a) b) c) d) 8) Which is the following diagrams shows the effects of the rotation of the Earth on its axis? a) b) c) d) 9) Diagram shows the revolution of the Earth around the Sun. Which of the following statements is correct about the diagram above? a) Causes the position of the Sun to change b) The revolution of the Earth follows the Moon's orbit. c) One complete revolution takes 365 1/4 days. d) Revolves in a clockwise direction. 10) Which of the following is a complex machine? a) b) c) d)

Year 4 Science Revision

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