Q.1. Which game is played without speaking?
Ans. Dumb Charades is a game that is played without speaking and in this game one can only express using face and body actions. Others have to tell the situation just by looking at the body actions and the face of the player.
Q.2. Fill in the blanks:
_____ means to move quickly back and forth.
Ans. A) Vibrate
Q.3. Those people who cannot hear and speak talk through ________.
Ans. Those people who cannot hear and speak talk through body actions.
Q.4. State True or False: Energy is the lowness or highness of a sound.
Ans. B) False
Q.5. Fill in the blanks:
_______ is taught to children who cannot speak and hear.
Ans. Sign language is taught to children who cannot speak and hear.
Q.6. What is amplitude?
Ans. Amplitude is the size or the strength of a wave.
Q.7. Even before children learn to speak they express their feeling by their ________.
Ans. Even before children learn to speak they express their feeling by their face and hands.
Q.8. What is the frequency of human sound?
Ans. The frequency of the sound waves of the human voice is between 80 and 400 cycles per second.
Q.9. State True or False:
Hands can be used to show mudras
Ans. True, hands can be used to show mudras.
Q.10. Fill in the blanks:
Oscilloscope does not directly measure the _______ itself.
Ans. A) Sound
Q.11. If someone is afraid of dogs, how will the face look when suddenly a dog comes in front of them?
Ans. The face looks scared if someone is scared of dogs and it suddenly comes in front of them.
Q.12. What is the amplitude of a wave??
Ans. If a wave on the ocean rises above the rest of the water by 5 meters, that’s the wave’s amplitude.
Q.13. State True or False:
Face can be used to the feelings.
Ans. True, face can be used to express various feelings.
Q.14. Which medium does sound travels faster from?
Ans. Sound travels faster in solid medium because molecules are tightly packed.
Q.15. Why do people used hand and face symbols to express their feelings?
Ans. Some people are deaf and dumb so they use hand and face symbols to express their feelings.
Q.16. State True or False:
Larger waves create smaller sounds.
Q.17. Fill in the blanks:
_______ artists and ______ people talk through actions.
Ans. Mime artists and dumb people talk through actions.
Q.18. Where does human voice from?
Ans. The human voice comes from the larynx, the lungs, and the resonators in the mouth, nose and throat.
Q.19. What is the expression on the face when he or she scores the highest marks in the class?
Ans. When someone scores highest marks in the class then the face looks joyful.
Q.20. How can sound harm us?
Ans. Sound can be harmful when it is too loud.
Q.21. How could a person play piano if he is deaf?
Ans. The person could feel the deep rumbling chords of the piano and this could help him to play the piano.
Q.22. Fill in the blanks:
_____ produces the loudest sound.
C) Falling vessel
Ans. (C) Falling vessel
Q.23. State True or False:
Lip reading does not help deaf people to understand what the person is saying.
Ans. Lip reading helps deaf people to understand what the person is saying so the given statement is false.
Q.24. What does fast vibration lead to?
Ans. Fast vibration leads to higher sound or higher pitch.
Q.25. State True or False:
Face can be used as a mirror for many actions.
Ans. True. face tells a lot about our actions so face is a mirror.
Q.26. State True or False:
Resonators vibrate at the same volume as radiators.
Ans. B) False
Q.27. This mudra can be used to show?
Ans. This mudra can be used show a bud.
Q.28. Fill in the blanks:
Sound reaches into_____ of the body.
Ans. D) Wars
Q.29. How could animals express their gratitude towards other animals or humans?
Ans. Animals cannot speak so they express then gratitude by face expressions and actions.
Q.30. What is a wind instrument?
Ans. Wind instrument is a musical instrument (as a flute or horn) sounded by the vibration of a stream of air and especially by the player's breath.
Q.31. If a person has lost his favourite toy then what look would be there on his face?
Ans. The look on the face of the person would be sad because he has lost his favourite toy.
Q.32. What problem can noise cause?
Ans. Noise can cause health problem like damage to ears.
Q.33. The hand expression shown in the figure can be used to express
Ans. This hand expression or mudra can be used to show a snake.
Q.34. State True or False:
Lower frequency causes high pitch.
Ans. B) False
Q.35. State true or false:
Deaf and dumb people do not understand what other people are trying to say.
Ans. Deaf and dumb are able to understand what other people are trying to say by reading their face expressions and other actions. Hence, the given statement is false.
Q.36. What does lower frequency cause?
Ans. Lower frequency causes low pitch.
Q.37. Which mudra can be used to show a fish?
Q.38. Fill in the blanks:
______ defines loudness and softness of the sound.
Ans. B) Volume
Q.39. In dance hands and face are used to convey feelings. These are called _______ and ________.
Ans. In dance hands and face are used to convey feelings. These are called mudras and bhavs.
Q.40. What are resonators?
Ans. Resonators vibrate at the same frequency as the radiators but with different volume.