Class 5 Science Chapter 6 Test 2 Welcome to your Class 5 Science Chapter 6 Test 2 Name Email 1. The _______ who landed on the moon use wireless radio system for talking. Doctors Engineers Astronauts None of these 2. We hear sound when it enters our ears after passing through _______. Space Vacuum Air Light 3. Speed of sound in iron is _______ meter per second. 2000 3000 4000 5000 4. When water comes in the way of sound travelling through air: Sound will stop Sound will slow down Sound will become fast No effect on the speed of sound 5. Speed of sound in water is _______ meter per second. 1400 1500 1600 1700 6. A vibrating object produces _______. Light Sound Motion None of these 7. The speed of sound in water is almost _______ times greater than air. 4 5 15 16 8. The sounds which are unpleasant to our ears are called _______. Music Noise Buzzing Intensity 9. Intensity of sound depends on its _______. Faint sound Buzzing Loudness Frequency 10. The intensity of sound _______with the increase of distance from its source. Increases Decreases No effect None of these 11. The speed of sound in solid objects is almost _______ times greater than air. 4 5 15 16 12. When an object vibrates, it forces the air particles around it to vibrate and thus _______ travel from one plane to another. Light Sound Motion None of these 13. How does light travel in air? In a circle Along curved path Along straight line In dispersed path 14. Sound travels _______ through solid objects than the air. Slower Faster Moderate None of these 15. Which object does reflect maximum light? White paper Colored paper Mirror Brick wall 16. Buzzing of flies and mosquitoes is due to _______ of their wings. Vibration Motion Space None of these 17. The louder the sound, the _______ is its intensity. Less Greater Zero Moderate 18. Sound is a form of energy which produces _______ in matter particles. Vibration Motion Light None of these 19. Sound cannot pass through space due to No particles to vibrate No air to travel Vacuum in space All of these 20. Speed of sound is maximum in:. A metal wire Air Water Vacuum 21. Which of the following sounds is called noise? Sound of flute Rusting of leaves Pressure horn Chirping of birds 22. Speed of sound in air is _______ meter per second. 320 330 340 350 23. Sound cannot pass through _______. Solid Liquid Gas Space 24. The sounds which are pleasant to our ears are called _______. Music Noise Buzzing Intensity 25. Sound can travel through: Solid Liquid Gas All of these Time is Up! Time's up
