Properties of Waves 1: Wavefront, Reflection and Refraction

Six wavefronts are shown in the diagram. What is the wavelength of the wave?

• 5 cm

• 6 cm

• 7.5 cm

• 30 cm

What is the reflected wave of the incident wave below?

• 
• 
• 
• 

Which of the following quantities of the wave will be changed during reflection? (Can choose more than one answer)

• Wave speed

• Frequency

• Wavelength

• Period

• Travelling direction

Which of the following quantities of the wave MUST be changed during refraction? (Can choose more than one answer)

• Wave speed

• Frequency

• Wavelength

• Period

• Travelling direction

Which of the following quantities of the wave MUST keep the same during refraction? (Can choose more than one answer)

• Wave speed

• Frequency

• Wavelength

• Period

• Travelling direction

Water waves below travels from deep region to shallow region. What is the refracted waves of the water waves?

• 
• 
• 
• 

Diffraction occurs if the water waves travels through __________.

• Shallow region

• A gap between barriers

• A floating ball on the water surface

The diagram shows the diffraction of water waves. If the gap becomes smaller, which diagram correctly shows the new diffracted waves?

• 
• 
• 
• 

The diagram shows the diffraction of water waves. If the more water is added to the water tank, which diagram correctly shows the new diffracted waves?

• 
• 
• 
•