Finals

Question 1

is part of the electromagnetic radiation spectrum,

Answer 1

Light

Question 2

A form of energy

Answer 2

Light

Question 3

usually considered to be the visible part of the spectrum;

Answer 3

Light

Question 4

How is light defined in physics?

Answer 4

all portions of the electromagnetic scale including invisible forms such as infrared, ultraviolet, x-rays, radio waves, and more.

Question 5

What are the properties of Light?

Answer 5

1. Reflection
2. Refraction
3. Transmission
4. Absorption

Question 6

Refers to the bouncing of light wave off the boundary

Answer 6

Reflection

Question 7

is the bending of light.

Answer 7

Refraction

Question 8

It is an attraction between the molecules of the medium and the particles of light which contribute to the change of speed and direction as the particles of the light travel inside the medium

Answer 8

Refraction

Question 9

The change in the direction of a wave when it passes from one medium to another.

Answer 9

Refraction

Question 10

the bending of light (it also happens with sound, water and other waves) as it passes from one transparent

Answer 10

Refraction

Question 11

Where does Refraction happen?

Answer 11

in sound, water and other waves

Question 12

Refers to the process where light passes through an object or medium without being absorbed.

Answer 12

Transmission

Question 13

How does absorption happen?

Answer 13

When light waves strike an atom that has similar frequency, electrons will absorb the energy and will be set into vibration. absorbed.

Question 14

Atoms contain electrons that can vibrate at certain frequencies.

Answer 14

Absorption

Question 15

What happens when light passes through, and the objects can be seen clearly

Answer 15

Transparent

Question 16

What happens when some light passes through, slowed down, scattered, or sometimes blocked? Objects appear colored or blurry

Answer 16

Translucent

Question 17

What happens when light is blocked, either reflected or absorbed? Object is blocked and shadow is cast

Answer 17

Opaque

Question 18

What are the two nature of light?

Answer 18

• Particle
• Wave

Question 19

Who proposed the wave theory of light?

Answer 19

Christian Huygens

Question 20

describes each point on a wave behaves as a point source for waves in the direction of wave motion.

Answer 20

Huygens’ Principle

Question 21

What assumptions did Christian Huygens make for his Wave Theory of Light?

Answer 21

1. Light propagates as a wave.
2. A source of light emits the waves which travel in a straight line with uniform speed through homogenous medium.
3. Light travels through luminiferous aether- once believed to be the rigid medium which filled the void of the universe and at which light could travel as a wave.

Question 22

How does Light propagate or produce?

Answer 22

As a wave

Question 23

How does a source of light emit the waves?

Answer 23

Through homogenous medium

Question 24

How does a source of light travel?

Answer 24

in a straight line with uniform speed

Question 25

Where does light travel through according to the Wave Theory of Light?

Answer 25

luminiferous aether-

Question 26

once believed to be the rigid medium which filled the void of the universe and at which light could travel as a wave.

Answer 26

luminiferous aether

Question 27

Who were the two scientists that proposed different light theories?

Answer 27

- Isaac Newton - Christian Huygens

Question 28

Who proposed the Wave theory of Light

Answer 28

Dutch scientist Christian Huygens

Question 29

Who proposed the Corpuscular Theory of Light

Answer 29

Isaac Newton

Question 30

According to this theory, light consists of tiny particles or corpuscles coming from a luminous object.

Answer 30

Corpuscular Theory of Light by Isaac Newton

Question 31

is the capability of a light ray to be refracted.

Answer 31

Refrangibility

Question 32

a disturbance that travels through a medium or a vacuum and carries energy.

Answer 32

Wave

Question 33

What does sound, light, and the motion of particles exhibit?

Answer 33

Wavelike properties

Question 34

A wave in which the direction of energy transfer is perpendicular to the vibration of particles.

Answer 34

Transverse Waves

Question 35

A wave in which the direction of energy transfer or wave motion is parallel to the particle motion.

Answer 35

Longitudinal Waves

Question 36

the distance between two identical points on a wave.

Answer 36

Wavelength

Question 37

the number of vibrations completed in one second,

Answer 37

Frequency

Question 38

How is frequency measured?

Answer 38

hertz (Hz)

Question 39

are important characteristics of an electromagnetic wave.

Answer 39

- Wavelengths - Frequency

Question 40

If the wavelength is short, what should the frequency be?

Answer 40

High

Question 41

If the wavelength is long, what should the frequency be?

Answer 41

Low

Question 42

What is Electromagnetic (EM) consisted of?

Answer 42

both electric and magnetic field waves

Question 43

do not require a medium to travel.

Answer 43

Electromagnetic (EM)

Question 44

Who calculated that speed of the EM waves in a vacuum is approximately 3 × 10^8 m/s which is the same as the speed of light?

Answer 44

James Clerk Maxwell

Question 45

What is the relationship between the Frequency of an EM wave and energy?

Answer 45

Directly Proportional: The greater the frequency, the greater the energy is.

Question 46

What is the relationship between the Frequency and Wavelength?

Answer 46

Inversely Proportional: - The higher the frequency, the short the wavelength - The lower the frequency, the longer the wavelength

Question 47

What is the relationship between the energy of an EM wave to its wavelength?

Answer 47

Inversely Proportional

Question 48

is the continuous range of electromagnetic waves arranged in order of frequency or wavelength

Answer 48

electromagnetic (EM) spectrum

Question 49

What are the different types of Radiation?

Answer 49

- Radio - Microwave - Infrared - Visible - Ultraviolet - X-ray - Gamma ray

Question 50

What is the wavelength of a Radio?

Answer 50

10³

Question 51

What is the approximate scale of wavelength of Radio?

Answer 51

Buildings

Question 52

What is the frequency of Radio?

Answer 52

10⁴

Question 53

What is the frequency of Humans?

Answer 53

10⁸

Question 54

What is the wavelength of a Microwave?

Answer 54

10⁻²

Question 55

What is the approximate scale of wavelength of a Microwave?

Answer 55

Butterflies

Question 56

What is the wavelength of an Infrared?

Answer 56

10⁻⁵

Question 57

What is the approximate scale of wavelength of a Infrared?

Answer 57

Needlepoint

Question 58

What is the frequency (Hz) of infrared?

Answer 58

10¹²

Question 59

What is the approximate scale of wavelength of an Infrared?

Answer 59

Needlepoint

Question 60

What is the approximate scale of the wavelength of a Visible

Answer 60

Protozoans

Question 61

What is the wavelength of an Visible?

Answer 61

0.5 x 10⁻⁶

Question 62

What is the frequency (Hz) of Ultraviolet?

Answer 62

10¹⁵

Question 63

What is the wavelength of an Ultraviolet?

Answer 63

10⁻⁸

Question 64

What is the approximate scale of wavelength of an ultraviolet?

Answer 64

Molecules

Question 65

What is the frequency (Hz) of infrared?

Question 65

What is the frequency (Hz) of Ultraviolet?

Answer 65

10¹⁶

Question 66

What is the wavelength of an X-ray?

Answer 66

10⁻¹⁰

Question 67

What is the approximate scale of wavelength of an X-ray?

Answer 67

Atoms

Question 68

What is the frequency (Hz) of X-ray?

Answer 68

10¹⁸

Question 69

What is the wavelength of a Gamma Ray?

Answer 69

10⁻¹²

Question 70

What is the approximate scale of wavelength of Gamma Ray?

Answer 70

Atomic Nuclei

Question 71

What is the frequency (Hz) of Gamma Ray?

Answer 71

10²⁰

Question 72

Splitting of white light into seven constituent colors when passed through the prism.

Answer 72

Dispersion

Question 73

An example of this light formation is a rainbow.

Answer 73

Dispersion

Question 74

an optical element which is transparent with flat, polished surfaces that refract light.

Answer 74

Prism

Question 75

the process where light rays deviate from its path due to non-uniformities in the medium through which they pass.

Answer 75

Scattering

Question 76

It is the reason why the sky is blue

Answer 76

Scattering

Question 77

What are the non-uniformities in Scattering?

Answer 77

dust particles, gas molecules, droplets, etc.

Question 78

Why is the sky blue?

Answer 78

- Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. - Blue light is scattered more that's why the sky appears blue during the day. - When the Sun is low in the sky during sunrise and sunset, the light travels further through the Earth’s atmosphere. We don’t see the blue light because it gets scattered away, but the red light isn’t scattered very much – so the sky appears red.

Question 79

a phenomenon that occurs when two light waves meet while traveling along with the same medium.

Answer 79

Interference

Question 80

What is an example of an interference?

Answer 80

when you drop two rocks at different points in water

Question 81

What are the two types of Interference?

Answer 81

- Constructive Interference - Destructive Interference

Question 82

When waves combine to produce a wave with an amplitude higher than that of the original.

Answer 82

Constructive Interference

Question 83

Crest-to-crest or trough-to-trough reinforcement.

Answer 83

Constructive Interference

Question 84

occurs when two interfering waves are with opposite displacements.

Answer 84

Destructive Interference

Question 85

For example, a crest meets with a trough.

Answer 85

Destructive Interference

Question 86

a process in which a light ray travels through an obstacle or around a barrier and it spreads out as a result.

Answer 86

Diffraction

Question 87

Example of this is the silver lining in clouds

Answer 87

Diffraction