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Physics > Chapter 13 - Wave > Flashcards

Chapter 13 - Wave Flashcards

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1
Q

Transverse Wave are waves travel ____ to the direction of the ______

Example of Transverse wave

A

Perpendicular, Vibration

Light and Water Wave

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2
Q

Longitudinal Wave are waves that travel _______ to the direction of ______

Example of Longitudinal Wave

A

Parallel, Vibration

Sound Wave

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3
Q

The highest point of the wave is call?

A

Crest

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4
Q

The lowest point of the waves is called?

A

Trough

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5
Q

In longitudinal wave, the section in which the vibrating particle are close to each other is experiencing ______

A

Compression

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6
Q

In longitudinal wave, the section in which the vibrating particle are further away from each other is experiencing ______

A

Rarefaction

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7
Q

Define Amplitude

A

Maximum displacement of a point from its rest position

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8
Q

Define wavelength

A

Shortest distance between any two points in phrase

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9
Q

Define Frequency

A

The number of complete waves produced per second

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10
Q

S.I Unit for frequency

A

hertz (Hz)

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11
Q

Define Period, T

A

The time taken to produce one complete wave

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12
Q

S.I Unit for Period

A

Seconds

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13
Q

Conditions for two points to be in phrase (3)

A

Same Direction
Same Speed
Same Displacement

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14
Q

Frequency =

A

1/ Period

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15
Q

Velocity of WAVE =

A

Frequency x Wavelength
Or
Wavelength / Period

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16
Q

Concept of Reflection of wave = Concept of reflection of light T/F

A

True

17
Q

After reflection, _____, _____, and _____ of the reflected wave remain UNCHANGED, Only ______ changes

A

Speed, Frequency, Wave Length, Only direction Changes

18
Q

Refraction of waves
Properties of refracted waves (5)

When water waves travels from DEEP to SHALLOW waters

A 
Bends towards the normal
Speed Decreases
Wavelength Decreases
Frequency Remain unchanged 
Direction Changes
19
Q

When drawing the refraction diagram of waves, what are the steps?

A

Identify the angle of incidence

Draw line of the angle of refraction

Draw horizontal Perpendicular line across the line of angle of refraction that are connected to the lines of angle of incidence

20
Q

What is a waterfront

A

An imaginary line on a wave joins all points which have the same phrase of vibration

21
Q

The two types of wave

A

Transverse and Longitudinal

22
Q

Electromagnetic Spectrum
7 Types of waves
From long to short wavelength

A 
Radio Wave
Microwaves
Infrared
Visible light
Ultraviolet
X-Ray
Gamma Ray
23
Q

7 Colors of Visible light, from low frequency to high frequency

A

Red, Orange, Yellow, Green, Blue, Indigo, Violet

24
Q

Properties of all electromagnetic spectrum (7)

A

Are transverse wave

Obey the laws of reflection and refraction

Can travel in vacuum

Travel in same speed, 3 x 10^8 in Vaccum

Transfer energy from one place to another

Wave speed equation, V=F x 入, is applicable to all

When Electromagnetic wave travel from one medium to another, speed and wavelength CHANGE, frequency UNCHANGED.

25
Q

Use of Gamma Ray (1)

A

Radiation Therapy, to kill cancerous cell

Has the highest energy, as has high frequency or low wavelength, so can kill living cells

26
Q

Uses of X-Ray

A

Radiation Therapy
X-Ray Photo
Detection of flaws in heavy metal equipment
X-Ray Machine that helps security personal screen luggage at custom checkpoint

27
Q

Use of Ultraviolet

A

Used in sunbed and sterilization of equipment

Help increase the body’s production of Vitamin D

28
Q

Use of Visible Light

A

Used in optical vibre

Allow us to see things

29
Q

Uses of infrared radiation

A

Used in
remote controller,
ear thermometer,
intruder alarms

30
Q

Uses of Microwaves

A

Use in
microwave ovens
Satellite television
GPS (Global Positioning System)

Use in communication with satellites because they can penetrate the atmosphere

31
Q

Radio-Wave

A

Use in
Radios
Radar
Over-the-air television

32
Q

Effects of ionizing radiation on living matter

A

Radiation Has the energy to remove electron from atom or molecule

Expose to ionizing radiation can damage biological molecule and lead to abnormal cell division

This may cause cancer and deformities to a developing fortis

Physics (21 decks)

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