Interference

Vibrations & Waves

4.3 - Wave Behavior [Interference]

Activity 1

Generating a pulse between 2 different thicknesses 

Multiple Select

After we have watched the video, answer the following questions.

Q1) What are the types of waves that form at a boundary between 2 different mediums?

• Incident wave

• Transmitted wave

• Reflected wave

• Microwave

Multiple Choice

The wave that passes the boundary is called _____

• Transmitted wave

• Reflected wave

• Banana wave

Multiple Choice

The speed and the wavelength of the _________ is the same as the speed and the wavelength of the _________.

• Reflected Pulse / Transmitted Pulse

• Reflected Pulse / Incident Pulse

Multiple Choice

The _______________ (in the denser medium) is traveling slower than the ______________ (in the less dense medium).

• transmitted pulse / reflected pulse

• reflected pulse / transmitted pulse

Multiple Choice

The ___________ (in the denser medium) has a smaller wavelength than the _____________ (in the less dense medium).

• transmitted pulse / reflected pulse

• reflected pulse / transmitted pulse

Poll

What if the travelling wave couldn’t pass through the second medium (fixed end), what would happen?

• The wave will totally be reflected into the same medium

• The wave will somehow pass through the medium

Activity 2

Interference

Multiple Select

What are the types of Interference?

• Constructive Interference

• Incident Interference

• Destructive Interference

Multiple Choice

When we have a superposition of waves with an equal but opposite displacement, this is called ____________

• destructive interference

• constructive interference

Multiple Choice

The point N in the first panel is called _________ and it happens because the pulses cancel each other. (zero displacement)

• Node

• Anti-Node

• Noodles

Multiple Choice

A waves in superposition with an equal magnitude and their displacement are in the same direction, this is called ____________

• constructive interference

• destructive interference

Multiple Choice

The point A in the second panel where the amplitude of the two waves meet, is greater than individual waves is called __________

• Antinode

• Node

• Antinutella