Sound is produced by.........

Tags

NGSS.MS-PS4-1

Which of the following is not a property of sound waves?

• longitudinal wave

• able to propagate through vacuum

• propagate at different speed in different medium

• travels the fastest in solid

Tags

NGSS.MS-PS4-2

Name the part of a longitudinal wave where particles are close to each other and has higher pressure.

What is human hearing range?

• 200 Hz - 20 000 Hz

• 2 Hz - 2000 Hz

• 20 Hz - 20 000 Hz

• 200 Hz - 2000 Hz

Tags

NGSS.MS-PS4-1

Which of the following animal has the widest hearing range?

• Dog

• Cat

• Beluga whale

• Dolphin

Which of the following sequence is correct to represent the increasing speed of sound?

• Solid ➝ Liquid ➝ Gas

• Liquid ➝ Gas ➝ Solid

• Gas ➝ Liquid ➝ Solid

• Liquid ➝ Solid ➝ Gas

Tags

NGSS.MS-PS4-2

Which of the followings are the typical speed of sound in solids?

• 343 m/s

• 1500 m/s

• 5950 m/s

• 5890 m/s

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Why the speed of sound in gas is the slowest?

• Gas particles are far apart so there is time delay to transfer vibration.

• Most of the sound wave is lost and absorbed by surrounding.

• Gas has less density compared to solid and liquid

• Mass of gas is heavier than solid and liquid.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which of the followings are sound absorbers?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

What is the term used to name the reflected sound waves?

Tags

NGSS.MS-PS4-2