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Interference

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

Two transverse waves overlap.  Crests overlap with crests.  Troughs overlap with troughs.  The waves are

a)

In-phase

b)

Out-of-phase

c)

In-synchronicity

d)

Out-of-synchronicity

2.

Two transverse waves overlap.  Crests overlap with troughs.  Troughs overlap with crests.  The waves are _______.

a)

In-phase

b)

Out-of-phase

c)

In-synchronicity

d)

Out-of-synchronicity

3.

If two overlapping waves are in-phase, the resultant wave will have ______ compared to the two waves.

a)

Greater amplitude

b)

Greater frequency

c)

Greater wavelength

d)

Greater wave speed

4.

When 2 waves meet on the same medium, how do they interact?

a)

They bounce off one another

b)

They travel through one another

c)

They refract off one another

5.

Constructive interference happens when two waves are:

a)

out of phase.

b)

zero amplitude.

c)

in phase.

6.

The F-18 Growler carries electronic warefare equipement to disable enemy radar systems. How does it do this?

a)

It cloaks the radar waves

b)

It jams the radar signal with intense waves

c)

It reflects the radar away

d)

It destroys the radar signal

7.

What do the RADAR Jamming and RADAR signal have in common?

a)

Frequency

b)

Wavelength

c)

Amplitude

d)

Pitch

8.

Which would result in no network connection?

a)

if you were surrounded by trees

b)

water around the phone

c)

a phone in a metal microwave oven

d)

a plastic case around the phone

9.

When 2 waves temporarily interfere with each other then resume their course of movement, which of the following is true?

a)

They take on and keep a new amplitude based on the result of the interference until the end of the movement.

b)

They are not affected by the interference and maintain their original amplitude throughout the movement.

c)

Both waves are always counteracted and cease to exist.

d)

They temporarily take on a new amplitude due to the interference but resume their original amplitude until the end of the movement.

10.

When 2 waves meet and create a bigger wave

a)

Constructive Interference

b)

Destructive Interference

11.

When two waves meet and create a smaller wave

a)

Constructive

b)

Destructive

12.

As represented in the diagram below, two wave pulses, X and Y, are traveling toward each other in a rope. Both wave pulses have an amplitude of 0.30 m. Which diagram shows the pulse produced due to the superposition of pulse X and pulse Y?

a)
b)
c)
d)
13.

Two waves having the same amplitude and frequency are traveling in the same medium. Maximum destructive interference will occur when the phase difference between the waves is

a)

b)

90°

c)

180°

d)

270°

14.

What is the principle behind the phenomenon where two waves superpose to form a resultant wave of greater, lower, or the same amplitude?

a)

Diffraction

b)

Interference

c)

Reflection

d)

Refraction

15.

In a double-slit experiment, what type of interference pattern is observed on the screen?

a)

A single bright fringe

b)

A series of bright and dark fringes

c)

A single dark fringe

d)

No pattern is observed