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science 2 > waves > Flashcards

waves Flashcards

(72 cards)

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1
Q

disturbances that travel through a medium to one place to another.

A

waves

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2
Q

substance carrying waves (solid, liquid, gas)

A

medium

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3
Q

perpendicular movement, electromagnetic wave.

A

transverse waves

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4
Q

parallel movement sa propagation

A

longitudinal wave

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5
Q

if megnetic is present so does the

A

electric

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6
Q

parts of wave

A

crest, trough, amplitude, wave length (2), one wave, rest position

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7
Q

maximum positive upward displacement for the rest position

A

crest

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8
Q

point that exhibits the maximum negative downwars displacement for the rest position

A

trough

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9
Q

wavelength

A

length of one complete wave cycle (1 crest to another)

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10
Q

calculated the speed of electromagnetic wave to be 3.0 x 10 to the power of 8 m/s

A

james clerk maxwell

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11
Q

space with no matter

A

vacuum

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12
Q

prediction regarding electromagnetic wave

A

1862

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13
Q

heinrich hertz may nao observe na daw na electromagnetic wave

A

1887

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14
Q

refers to the time required to complete one cycle

A

waves period (T)

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15
Q

Unit of T:

A

S (seconds)

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16
Q

the number of cycle per time

A

Frequency (f)

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17
Q

unit of f:

A

Hz

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18
Q

distance the wave covers per cycle of propagation

A

wavelength

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19
Q

codename for types of electromagnetic waves

A

Raging Martians Invaded Venus Using X-Ray Guns

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20
Q

types of electromagnetic waves

A

Radio Wave
Microwave
Infrared
Visible light
Ultra-Violet
X-Ray
Gamma Ray

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21
Q

electromagnetic spectrum

A

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

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22
Q

what is radiowave?

A

mas mahaba wavelength kesa kay gamma ray, lowest frequency.
Discovered by Heinrich Hertz.
uses: broadcasting, information

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23
Q

long distance communication rely on

A

transmission and reception of electromagnetic wave such as radiowaves and microwaves

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24
Q

to send signal

A

antenna

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25
antenna na bilog
dish
26
converts electrical signal into radio wave
antenna
27
converts electric current to radiowave
transmission
28
radio wave to electric current
reception
29
difference between am and fm
notes
30
walkie talkie should have the same
channel and frequency
31
RADAR meaning
Radio Detection and Raging
32
when do we use RADAR?
air traffic control in NAIA, military surveillance
33
example of RADAR
tagaytay dopler radar: PAGASA: weather forecasting
34
examples of radio wave
radar speed gun automatic door RFID MRI
35
RFID AND MRI MEANING
Radio Frequency Identification Magnetic Resonance Imaging
36
viewing internal parts of human body without invasive surgery
mri
37
what is microwave?
wavelength: 1m-1mm frequenccy: 3.0 x 10 to the power of 8 - 3.0 x 10 to the power of 11 long distance communication GPS Global positioning System high frequency = used communication
38
WLAN
wireless local area network enable communication between WAP wireless access point or mesh
39
uses of microwave
microwave, microwave ablation, - heat to shrink/ destroy tumors microwave imaging - assess and monitor breast cancer via tomography
40
WHAT IS INFRARED?
occupies wavelength roughly btween 1 mm and 700 nm discovered by william herschel the frequency of infrared is lower than the red light short distance commu - REMOTE CONTROL OPERATE TV, AND AIRCONS
41
USES OF INFRARED
night vision system: producing images, military cctv: equipped with night vision apparatus infrared grill: shawarma
42
what is visible light?
wavelength 700 nm to 400 nm sunlight, colors red has the longest wavelength: low frequency - inversely prop violet has the shortest wavelength: high frequency
43
uses of visible light
laser light amplification by stimulated emission made of tubes with mirror on both ends and a material that can be stimulated cut wood and metals; burn or melt optical disc: reading contents of an optical disc; cd laser eye surgery or lasik eye surgery.
44
what is ultraviolet wavelength?
lamnda of 400 nm to 10 nm Johann Wilhelm Ritter ultra menas going beyond
45
USES OF ULTRAVIOLET
Fluorescence - phenomenon where substances absorb UV radiation and emit visible light SUN: MAJOR SOURCE OF UV RAYS money counteright, crimes, forensic investigation, purify air, insect trap
46
ca pass through several opaque
X-rays and Gamma Ray
47
what is x-ray?
10 nm to 100 pm Wilhelm Conrad Roentgen sometimes called roentgen ray
48
uses of x-ray
baggage screening medical x-ray
49
what is gamma ray?
less than 100 pm paul villard sources of gr: sun, intersellar clouds, remnants of supernova (exploding stars)
50
uses of gamma ray
radiation theraphy - destroy cancer cells
51
effects of electromagnetic wave in our envi
light is responsible for plants and photosynthetic organisms to survive and to produce by-products in which biological
52
process of photosynthesis
sunlight carbon dioxide water oxygen (by-product) sugar (main product)
53
photosynthesis use
light energy to produce glucose and oxygen, generate food and energy
54
particle of light
photon
55
carry particular amount of energy
photon
56
pagtaas ng frequency at pagtaas ng energy
true haha
57
name the 2 stages of photosynthesis
light dependent and light independent
58
light depended reaction
electron gain energy and become excited when chlorophyll absorbs light
59
remember
faster movement fast collition more energy collapse
60
where photosynthesis takes place
chlorophyll
61
inside chlorophyll
thylakoid
62
where photosynthesis happens
leaves chloroplasts chlorophyll
63
process : kapag na ecite and photon pupunta sa primary electron acceptor
photo activation
64
what will replace the electronthen separate oxygen and hydrogen atoms
h2o
65
store energy to store future reactions
ATP
66
ATP
Adenosine Triphosphate
67
use for second stage of photosynthesis, acts as fuel
NADPH
68
NADPH
Nicotinamide Adenine Dinocleutide Phosphate
69
what is greenhouse?
the place needs to control heat trap heat made of glass walls but now is plastic tomato
70
what is greenhouse effect?
gasses are rapped in earths atmosphere Joseph Foreigher in 1824 ( build building with objects inside, the heat is still inside
71
greenhouse gasses trap?
carbon dioxide, methane, nitrous oxide, water vaper, short wavelength.
72
responsible for trapping
greenhouse gasses

science 2 (5 decks)

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