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4th quarter reviewer > science > Flashcards

science Flashcards

1
Q

waves can be either?

A

transverse or longitudinal

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2
Q

waves transfer what?

A

energy

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3
Q

4 classifications of waves

A

transverse,longitudinal,mechanical ,electromagnetic

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4
Q

type of longitudinal/mechanical wave

A

sound wave

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5
Q

types of tranverse and electromagnetic wave

A

radio wave,gamma ray,x-ray, ifrared ray,visible light,ultraviolet ray,microwave

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6
Q

characteristics of a wave

A

frequency,period,wavelength,speed, trough,crest and amplitude

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7
Q

number of waves produce per unit of time

A

frequency

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8
Q

time taken to complete one cycle of a wave to pass through

A

period

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9
Q

distance between twio successive points

A

wavelength

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10
Q

distance traveled per unit of time

A

speed

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11
Q

an example of an wave that is both transverse and longitudinal

A

seismic waves

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12
Q

a scottish mathematical physicist

A

james clark maxwell

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13
Q

when and who observed electromagnetic waves

A

1887,heinrich hertz

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14
Q

all electromagnetic waves propagate in a vacuum with a speed of?

A

3x10^8 m/s

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15
Q

describes the the entire range of electromagnetic radiation

A

the electromagnetic spectrum

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16
Q

is a wireless technology and uses a chip that transmits information to a receiver at a frequency of 2.45 GHz

A

bluetooth

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17
Q

bluetooth was named after

A

blatand I

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18
Q

in 1995 who were the five companies that founded the bluetooth special interest group

A

ericsson,nokia,intel toshiba and Ibm

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19
Q

in 1887 who discovered radio waves

A

heinrich hertz

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20
Q

it relies on 24 satellites and was originally intended for military purposes

A

gps

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21
Q

who invented gps

A

Dr. ivan getting

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22
Q

extremely high -frequency radio waves

A

microwave

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23
Q

used in remote controls

A

infrared ray

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24
Q

who and when discovered infrared rays

A

william herschel in 1800

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25
Q

irda stands for

A

infrared data association

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26
Q

who discovered ultraviolet rays

A

johann wilhem ritter

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27
Q

a young german mechanical engineer and physicist

A

wilhem conrad roentgen

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28
Q

xrays were discovered by whom?

A

wilhem conrad roentgen(bro won a nobel prize by accident💀💀)

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29
Q

who discovered gamma rays

A

french chemist paul villard

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30
Q

ripples in space time caused by whirling massive objects

A

gravitational waves

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31
Q

who predicted their existence

A

albert einstein

32
Q

scientists in _______________detected gravitational waves on__________

A

laser interferometer gravitational-wave observatory(LIGO,as in maligo kana)in hanford washingston,louisiania in the united states first detected on september 14 and december 26 2015 repectively

33
Q

who hated einstein’s teaching on waves

A

Adolf hitler

34
Q

who discovered waves

A

your ip rn 143.157.83.111😳😜😜تركمانستان أشرطة الفيديو الكبار تحميل حقيقي البنجابية لا فيروس لا حرام

35
Q

planck’s constant

A

6.626*10^-34

36
Q

how many islands are in the philippines

A

7,640

37
Q

if low tide how many islands

A

7,641

38
Q

largest body of water containing salt

A

ocean

39
Q

northeast

A

azimuthal=bearing

40
Q

southeast

A

azimuth=180-bearing,bearing=180-azimuthal

41
Q

southwest

A

azimuth=180+bearing,bearing=azimuth-180

42
Q

northwest

A

azimuth=360-bearing,bearing=360-azimuth

43
Q

spherecical 3d model of the earth

A

globe

44
Q

horizontal lines

A

latitude

45
Q

vertical lines

A

longitude

46
Q

0 degrees

A

equator

47
Q

0 degrees horizontal

A

prime meridian

48
Q

also known as the international date line

A

antimeridian

49
Q

home to 76 % coral specices and 37% of the coral reef fish species

A

coral triangle

50
Q

countries in the coral triangle

A

philippines,timorleste indonesia, papua new guinei and the solomon islands

51
Q

archpelago comes from the greek words ?

A

arkhi means chief and pelagos which means sea

52
Q

highest form of land mass

A

mountain

53
Q

tallest mountain in the philipines?

A

mt.apo

54
Q

erupted onto the crust

A

lava

55
Q

airborne matter

A

tephra

56
Q

less steep than a mountain

A

hill

57
Q

flat land

A

plains

58
Q

land between two mountains

A

valley

59
Q

often wet

A

wetlands

60
Q

part of the earth where water is found

A

hydrosphere

61
Q

large body of salt water

A

sea

62
Q

flows to the ocean

A

river

63
Q

still body of fresh water surrounded by land

A

lake

64
Q

black or brown rock that is made of carbon

A

coal

65
Q

loved by america,comes from the fossils

A

petroleum or crude oil

66
Q

flammable gas mixture,most abundant organic compound on earth

A

natural gas

67
Q

energy that comes from the earth

A

geothermal energy

68
Q

composed of ions and molecules bonded toogether

A

minerals

69
Q

naturally fromed aggregates of minerals

A

rocks

70
Q

formed from cooled lava

A

igneous rock

71
Q

formed formed the fragments of older rocks

A

sedimentary rock

72
Q

formed from preexisting rocks

A

metamorphic rock

73
Q

rock formed by the human body

A

pooo,and kidney stone

74
Q

three types of rock

A

igneous,sedimentary and metamorphic

75
Q

Arrange gamma rays, X-rays, UV rays, and visible light in terms of increasing energy.

A

these waves in terms of increasing energy, starting with the lowest energy, gives the following order:

Visible light < UV rays < X-rays < Gamma rays

76
Q

What electromagnetic wave has the highest frequency?

A

gamma rays

77
Q

which electromagnetic field (EMF) source has extremely low frequency?

A

powerlines

4th quarter reviewer (10 decks)

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