Grade 7 Quiz

Which of the following is the maximum amount of wave displacement from its normal position?

• Speed

• Frequency

• Amplitude

• Wavelength

Does energy can be transmitted when wave pulses or disturbances are created? Why?

• Yes, since the movement itself is an energy.

• No, because wave pulse cannot transmit energy.

• Maybe

• It depends on how strong and slow it is.

Which of the following is being transferred by the waves from one place to another?

• Source

• Energy

• Waves

• Matter

Which of the following is NOT true about waves?

• Waves transmit energy from one place to another.

• Waves transmit matter from one place to another.

• Waves can propagate as mechanical or electromagnetic waves.

• Waves are classified as transverse, longitudinal, and surface waves.

Which of the following is TRUE about water wave?

• It is a surface wave.

• It is a stationary wave.

• It is a transverse wave.

• It is a longitudinal wave.

What happens to the wavelength of sound when there is a high frequency?

• It has an increasing wavelength.

• It has a shorter wavelength.

• It has a longer wavelength.

• It has a static wavelength.

How can we distinguish mechanical wave from electromagnetic waves?

• Mechanical wave occur without the aid of a medium, while electromagnetic wave occur when waves travels through medium.

• Mechanical waves occur when waves travel through a medium like solid, liquid, or gas, while electromagnetic waves occur without the aid of a medium.

• Mechanical waves exist in sun’s ultraviolet rays while electromagnetic waves exist in radio waves.

• Mechanical waves - wave movement would still exist without medium, while electromagnetic waves occur when only when there is medium like solid, liquid, or gas.

What  happens  to  the  amplitude  when  there  is  a  high  intensity  of sound?

• There is minimal amplitude.

• There is static amplitude.

• There is high amplitude.

• There is low amplitude.

What is the similarity of mechanical waves and electromagnetic waves?

• Both exist in sun’s UV ray.

• Both transmit matter.

• Both do not transmit energy.

• Both transmit energy.

How can we identify if there is high amplitude?

• When there is low intensity of sound.

• When there is high intensity of sound.

• When there is maximum displacement.

• When there is minimal displacement.