EVERYDAY SCIENCE

SCIENCE

PHYSICAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which sound has a pitch that is MOST DIFFERENT from the other three sounds?
A
fire alarm
B
train whistle
C
bouncing ball
D
smoke detector
Explanation: 

Detailed explanation-1: -Pitch can be taken as the measure of sound frequency expressed in terms of Hertz. Higher the frequency, higher the pitch. All kinds of sound produces some waves that are measured with respect to the frequency it carries. Pitch can also be expressed as the position of a musical note in a musical scale.

Detailed explanation-2: -High Pitch Sounds-Sounds are made when objects vibrate.-Vibrations travel from objects in waves to our ears, allowing us to hear sound.-Weak vibrations make a gentle soundwave which do not travel as far as strong vibrations. This is why sounds have different volumes.

Detailed explanation-3: -For a person with normal hearing, when it comes to pitch the human hearing range starts low at about 20 Hz. That’s about the same as the lowest pedal on a pipe organ. On the other side of the human hearing range, the highest possible frequency heard without discomfort is 20, 000Hz.

Detailed explanation-4: -A frequency is how frequent sound waves pass a certain point in a second. Pitch is how high or low we hear a sound to be. If the frequency is higher, the pitch is higher, If the frequency is lower, the pitch is lower.

There is 1 question to complete.