SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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running through a puddle
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waving your hand to your friend
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hitting a tuning fork, then putting it into water
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skipping rocks at the lake
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Detailed explanation-1: -A vibrating tuning fork contains a finite amount of vibrational energy. As it generates sound waves, this vibrational energy is transferred to the air as sound waves. As this energy is used up, the tuning fork grows quieter until it can no longer be heard.
Detailed explanation-2: -Waves transfer information and energy from one place to another without transferring matter. For example, light waves will transfer light energy from its source (a lamp) outwards. Waves move through vibrations, which can move in one of two ways.
Detailed explanation-3: -When a vibrating tuning fork is placed in a bowl of water, the energy from the fork is transferred into the water. If the fork just touches the water, a small amount of water from the top gains kinetic energy and flies out of the bowl. If you dip the fork deeply, the vibrations quit.
Detailed explanation-4: -Sounds are another form of waves – longitudinal waves. Like all waves, sound waves carry energy. By sticking the vibrating tuning fork in a denser medium like water, the tuning fork’s energy is transferred into the act of splashing water, rather than hearing sound. Waves are energy carriers.