Waves

All of the following are properties of sound waves except .....................

• it is mechanical waves

• it is produced due to vibration of medium particles.

• it needs a medium to travel.

• it travels through free space.

The movement of electrons around the nucleus is considered ....................... motion.

• vibrating

• circular

• transitional

• wave

All of the following are motions regularly repeated in equal periods of time except ...................

• wave motion

• circular motion

• vibrating motion.

• transitional motion.

All of the following are periodic motions except the ......................

• fan motion

• pendulum motion

• train motion

• sunflower motion

The movement of the Moon around the Earth is considered ..................... motion.

• vibrating

• circular

• wave

• transitional

In the periodic motion................................

• the pathway is straight.

• motion is regularly repeated.

• mass is regularly repeated.

• speed is regularly changed.

The motion of a simple pendulum is considered .................. motion.

• vibrating

• circular

• wave

• transitional

The motion of the following objects are transitional motion except the motion of ............

• train

• simple pendulum

• car

• bicycle

Sounds are produced due to.............................

• vibration of medium particles

• electromagnetic forces

• electrostatic forces

• wave motion

Mechanical waves are characterised by ..........................

• their speed is greater than that of electromagnetic waves.

• their speed is 300 millions m/sec.

• their need for a medium to propagate through.