In this quiz, we will be focusing on light, sound as well as hearing. We use our eyes to see everything around us, have you ever wondered why? This is because we also have light, and without light, everything will be a mist of darkness. In this combined quiz, you will find questions on sound waves, pitch/frequency, loudness/amplitude, comparing the speed of light/sound, hearing - function of ear and light, and many other interesting stuffs about light , sound and hearing.
Light or as we all call it visible light is a form of electromagnetic(EM) radiation that can only be detected by the human eye. It is part of the EM spectrum. It is important to know that the study of light is known as optics with optics quizzes as one of the very important quizzes in Physics and you may be tested from there as well.
Sound on the other hand is a wave formed when something causes vibration of air particles, when these vibrations get into the ear, they are heard, hence sound. This, therefore, means that hearing is the ability to detect sound with the ear. When sound is of very low frequency below 20Hz, it can not be detected by the human ear, this sound is known as infrasound. Sound above 20Khz is known as ultra sound and it is also inaudible to the human ear. Therefore the human ear can detect sound between 20Hz to 20KHz only.
This combined quiz in Physics, has sound, light, and hearing to have some certain similar characteristics. The very common one is frequency. Quizzes have been set for you with each question giving you a ¼ chance to pass that question. Take the quiz and enjoy.
Best of luck!
When materials are placed in the path of a light beam various things can happen. Which word describes the behaviour of tracing paper when light is shone on it?
What is the maximum safe time you should be exposed to a sound level of 101dB?
Which of the following times will it take for light to come to your eyes from a lightning flash a few miles away?
Which of the following times will it take for light to come to your eyes from sunlight reflected off the moon?
An object looks white in white light. The white light is passed through a clear plastic red filter onto the object in front of the screen. What colour will the object appear to be?
A steel wire was mounted on a board, so that the left hand bridge position could be changed, but fixed with an adjusting screw on the right to vary the tension on the wire. The wire thickness and length, its tension (tightness) and force applied can be varied to change the 'character' of the sound produced on plucking the wire. Which change will produce a higher pitched note in the wire sound?
Which colour combination produces the colour cyan?
When materials are placed in the path of a light beam various things can happen. Which word describes the behaviour of wood when light is shone on it?
What is the maximum sound level in decibels, you should be exposed to for 11/2 hours?
When materials are placed in the path of a light beam various things can happen. Which word describes the behaviour of aluminium foil when light is shone on it?
An object looks yellow in white light. The white light is passed through a clear plastic blue filter onto the object in front of the screen. What colour will the object appear to be?
The diagram shows what happens to a ray of light when it strikes the surface of a plane mirror. The vertical dotted line is at 90o to the surface of the mirror. Which statement is NOT true?
In the diagram an incident ray of light hits a transparent surface, most of the light passes through the air-water interface and a little is reflected. Which of the four rays is/are possible?
Which animal(s) can hear a frequency of 108 000 Hz?
A class of students were listening to single music notes played into a microphone and the result displayed on a cathode ray oscilloscope (CRO). The students where asked to sketch pictures for each sound produced. A selection of their sketches is shown above. Which student has sketched the result of a soft low pitched note?