SI Units Flashcards: 7 Base Units & 22 Named Derived Units
Practice all 7 SI base units and 22 derived units with special names: quantities, symbols, and base-unit expressions in one installable deck.
Sobre este mazo
Most SI lists are easy to scan and awkward to recall. These 110 text-only cards turn the complete core into small retrieval tasks: all seven base units and all 22 derived units with special names and symbols.
What the cards practice
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Quantity ↔ unit and symbol: recall each base quantity and every named derived quantity in both directions.
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Named unit ↔ coherent base-unit expression: expand all 22 special names, then reverse the mapping with the quantity supplied whenever an expression is shared.
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Notation and distinctions: keep case, spacing, symbol grammar, Hz/Bq, Gy/Sv, rad/sr, and kelvin/degree Celsius intervals straight.
The deck leaves out prefixes, conversions, non-SI units, unnamed derived units, significant figures, uncertainty, laboratory procedures, historical definitions, defining-constant values, and proprietary exam material. Expression-to-unit prompts always state the quantity, so shared expressions such as s⁻¹ and m²·s⁻² stay unambiguous.
The sequence establishes the seven base units first. It then alternates the 22 named units with a deterministic stride before moving from identity recall to base-unit expressions. Related directions and easy-to-confuse units stay at least three unrelated cards apart; the review scheduler handles longer-term spacing after installation.
Facts were checked against the BIPM SI Brochure, 9th edition, version 4.01 and NIST SP 330 §2, with notation checked against NIST SP 330 §5. The 2026 BIPM edition expresses radian and steradian as unit one; this deck follows that current form. No source prose, third-party deck text, or exam content was copied.
An AI tool helped draft and sequence the cards and generated the cover. Every final front and back was manually checked against the official SI tables. The original questions, answers, selection, sequence, metadata, and cover are shared under CC0 1.0 to the extent those elements can be dedicated; the underlying SI facts remain common knowledge.
Tarjetas de este mazo
Tarjeta 1
Pregunta
What is the SI base unit for time?
Respuesta
second (s).
Tarjeta 2
Pregunta
What is the SI base unit for length?
Respuesta
metre (m).
Tarjeta 3
Pregunta
What is the SI base unit for mass?
Respuesta
kilogram (kg).
Tarjeta 4
Pregunta
What is the SI base unit for electric current?
Respuesta
ampere (A).
Tarjeta 5
Pregunta
What is the SI base unit for thermodynamic temperature?
Respuesta
kelvin (K).
Tarjeta 6
Pregunta
What is the SI base unit for amount of substance?
Respuesta
mole (mol).
Tarjeta 7
Pregunta
What is the SI base unit for luminous intensity?
Respuesta
candela (cd).
Tarjeta 8
Pregunta
Which SI base quantity uses the second (s)?
Respuesta
Time.
Tarjeta 9
Pregunta
Which SI base quantity uses the metre (m)?
Respuesta
Length.
Tarjeta 10
Pregunta
Which SI base quantity uses the kilogram (kg)?
Respuesta
Mass.
Tarjeta 11
Pregunta
Which SI base quantity uses the ampere (A)?
Respuesta
Electric current.
Tarjeta 12
Pregunta
Which SI base quantity uses the kelvin (K)?
Respuesta
Thermodynamic temperature.
Tarjeta 13
Pregunta
Which SI base quantity uses the mole (mol)?
Respuesta
Amount of substance.
Tarjeta 14
Pregunta
Which SI base quantity uses the candela (cd)?
Respuesta
Luminous intensity.
Tarjeta 15
Pregunta
Which SI unit with a special name is used for plane angle?
Respuesta
radian (rad).
Tarjeta 16
Pregunta
Which SI unit with a special name is used for energy, work, or amount of heat?
Respuesta
joule (J).
Tarjeta 17
Pregunta
Which SI unit with a special name is used for electric resistance?
Respuesta
ohm (Ω).
Tarjeta 18
Pregunta
Which SI unit with a special name is used for Celsius temperature?
Respuesta
degree Celsius (°C).
Tarjeta 19
Pregunta
Which SI unit with a special name is used for dose equivalent?
Respuesta
sievert (Sv).
Tarjeta 20
Pregunta
Which SI unit with a special name is used for force?
Respuesta
newton (N).
Tarjeta 21
Pregunta
Which SI unit with a special name is used for electric potential difference?
Respuesta
volt (V).
Tarjeta 22
Pregunta
Which SI unit with a special name is used for magnetic flux density?
Respuesta
tesla (T).
Tarjeta 23
Pregunta
Which SI unit with a special name is used for activity referred to a radionuclide?
Respuesta
becquerel (Bq).
Tarjeta 24
Pregunta
Which SI unit with a special name is used for solid angle?
Respuesta
steradian (sr).
Tarjeta 25
Pregunta
Which SI unit with a special name is used for power or radiant flux?
Respuesta
watt (W).
Tarjeta 26
Pregunta
Which SI unit with a special name is used for electric conductance?
Respuesta
siemens (S).
Tarjeta 27
Pregunta
Which SI unit with a special name is used for luminous flux?
Respuesta
lumen (lm).
Tarjeta 28
Pregunta
Which SI unit with a special name is used for catalytic activity?
Respuesta
katal (kat).
Tarjeta 29
Pregunta
Which SI unit with a special name is used for pressure or stress?
Respuesta
pascal (Pa).
Tarjeta 30
Pregunta
Which SI unit with a special name is used for capacitance?
Respuesta
farad (F).
Tarjeta 31
Pregunta
Which SI unit with a special name is used for inductance?
Respuesta
henry (H).
Tarjeta 32
Pregunta
Which SI unit with a special name is used for absorbed dose or kerma?
Respuesta
gray (Gy).
Tarjeta 33
Pregunta
Which SI unit with a special name is used for frequency?
Respuesta
hertz (Hz).
Tarjeta 34
Pregunta
Which SI unit with a special name is used for electric charge?
Respuesta
coulomb (C).
Tarjeta 35
Pregunta
Which SI unit with a special name is used for magnetic flux?
Respuesta
weber (Wb).
Tarjeta 36
Pregunta
Which SI unit with a special name is used for illuminance?
Respuesta
lux (lx).
Tarjeta 37
Pregunta
What quantity uses the radian (rad)?
Respuesta
Plane angle.
Tarjeta 38
Pregunta
What quantity uses the joule (J)?
Respuesta
Energy, work, and amount of heat.
Tarjeta 39
Pregunta
What quantity uses the ohm (Ω)?
Respuesta
Electric resistance.
Tarjeta 40
Pregunta
What quantity uses the degree Celsius (°C)?
Respuesta
Celsius temperature.
Tarjeta 41
Pregunta
What quantity uses the sievert (Sv)?
Respuesta
Dose equivalent.
Tarjeta 42
Pregunta
What quantity uses the newton (N)?
Respuesta
Force.
Tarjeta 43
Pregunta
What quantity uses the volt (V)?
Respuesta
Electric potential difference.
Tarjeta 44
Pregunta
What quantity uses the tesla (T)?
Respuesta
Magnetic flux density.
Tarjeta 45
Pregunta
What quantity uses the becquerel (Bq)?
Respuesta
Activity referred to a radionuclide.
Tarjeta 46
Pregunta
What quantity uses the steradian (sr)?
Respuesta
Solid angle.
Tarjeta 47
Pregunta
What quantity uses the watt (W)?
Respuesta
Power and radiant flux.
Tarjeta 48
Pregunta
What quantity uses the siemens (S)?
Respuesta
Electric conductance.
Tarjeta 49
Pregunta
What quantity uses the lumen (lm)?
Respuesta
Luminous flux.
Tarjeta 50
Pregunta
What quantity uses the katal (kat)?
Respuesta
Catalytic activity.
Tarjeta 51
Pregunta
What quantity uses the pascal (Pa)?
Respuesta
Pressure and stress.
Tarjeta 52
Pregunta
What quantity uses the farad (F)?
Respuesta
Capacitance.
Tarjeta 53
Pregunta
What quantity uses the henry (H)?
Respuesta
Inductance.
Tarjeta 54
Pregunta
What quantity uses the gray (Gy)?
Respuesta
Absorbed dose and kerma.
Tarjeta 55
Pregunta
What quantity uses the hertz (Hz)?
Respuesta
Frequency.
110 tarjetas
SI Units Flashcards: 7 Base Units & 22 Named Derived Units
Estudia este mazo gratisFlashcards se abrirá para que puedas empezar a estudiar.
Tarjeta 56
Pregunta
What quantity uses the coulomb (C)?
Respuesta
Electric charge.
Tarjeta 57
Pregunta
What quantity uses the weber (Wb)?
Respuesta
Magnetic flux.
Tarjeta 58
Pregunta
What quantity uses the lux (lx)?
Respuesta
Illuminance.
Tarjeta 59
Pregunta
Express the radian (rad) in coherent SI base units.
Respuesta
1. The symbol rad keeps the plane-angle context explicit.
Tarjeta 60
Pregunta
Express the joule (J) in coherent SI base units.
Respuesta
kg·m²·s⁻².
Tarjeta 61
Pregunta
Express the ohm (Ω) in coherent SI base units.
Respuesta
kg·m²·s⁻³·A⁻².
Tarjeta 62
Pregunta
Express the degree Celsius (°C) in coherent SI base units.
Respuesta
K. A degree Celsius and a kelvin have the same size; their zero points differ.
Tarjeta 63
Pregunta
Express the sievert (Sv) in coherent SI base units.
Respuesta
m²·s⁻².
Tarjeta 64
Pregunta
Express the newton (N) in coherent SI base units.
Respuesta
kg·m·s⁻².
Tarjeta 65
Pregunta
Express the volt (V) in coherent SI base units.
Respuesta
kg·m²·s⁻³·A⁻¹.
Tarjeta 66
Pregunta
Express the tesla (T) in coherent SI base units.
Respuesta
kg·s⁻²·A⁻¹.
Tarjeta 67
Pregunta
Express the becquerel (Bq) in coherent SI base units.
Respuesta
s⁻¹. Use Bq for stochastic nuclear transformations, not periodic phenomena.
Tarjeta 68
Pregunta
Express the steradian (sr) in coherent SI base units.
Respuesta
1. The symbol sr keeps the solid-angle context explicit.
Tarjeta 69
Pregunta
Express the watt (W) in coherent SI base units.
Respuesta
kg·m²·s⁻³.
Tarjeta 70
Pregunta
Express the siemens (S) in coherent SI base units.
Respuesta
kg⁻¹·m⁻²·s³·A².
Tarjeta 71
Pregunta
Express the lumen (lm) in coherent SI base units.
Respuesta
cd·sr. Since sr has unit one, this is dimensionally cd; sr keeps the solid-angle context explicit.
Tarjeta 72
Pregunta
Express the katal (kat) in coherent SI base units.
Respuesta
mol·s⁻¹.
Tarjeta 73
Pregunta
Express the pascal (Pa) in coherent SI base units.
Respuesta
kg·m⁻¹·s⁻².
Tarjeta 74
Pregunta
Express the farad (F) in coherent SI base units.
Respuesta
kg⁻¹·m⁻²·s⁴·A².
Tarjeta 75
Pregunta
Express the henry (H) in coherent SI base units.
Respuesta
kg·m²·s⁻²·A⁻².
Tarjeta 76
Pregunta
Express the gray (Gy) in coherent SI base units.
Respuesta
m²·s⁻².
Tarjeta 77
Pregunta
Express the hertz (Hz) in coherent SI base units.
Respuesta
s⁻¹. Use Hz for periodic phenomena.
Tarjeta 78
Pregunta
Express the coulomb (C) in coherent SI base units.
Respuesta
A·s.
Tarjeta 79
Pregunta
Express the weber (Wb) in coherent SI base units.
Respuesta
kg·m²·s⁻²·A⁻¹.
Tarjeta 80
Pregunta
Express the lux (lx) in coherent SI base units.
Respuesta
cd·sr·m⁻². Since sr has unit one, this is dimensionally cd·m⁻²; sr keeps the solid-angle context explicit.
Tarjeta 81
Pregunta
For plane angle, which named SI unit has the coherent base-unit expression 1?
Respuesta
radian (rad).
Tarjeta 82
Pregunta
For energy, work, or amount of heat, which named SI unit has the coherent base-unit expression kg·m²·s⁻²?
Respuesta
joule (J).
Tarjeta 83
Pregunta
For electric resistance, which named SI unit has the coherent base-unit expression kg·m²·s⁻³·A⁻²?
Respuesta
ohm (Ω).
Tarjeta 84
Pregunta
For Celsius temperature, which named SI unit has the coherent base-unit expression K?
Respuesta
degree Celsius (°C).
Tarjeta 85
Pregunta
For dose equivalent, which named SI unit has the coherent base-unit expression m²·s⁻²?
Respuesta
sievert (Sv).
Tarjeta 86
Pregunta
For force, which named SI unit has the coherent base-unit expression kg·m·s⁻²?
Respuesta
newton (N).
Tarjeta 87
Pregunta
For electric potential difference, which named SI unit has the coherent base-unit expression kg·m²·s⁻³·A⁻¹?
Respuesta
volt (V).
Tarjeta 88
Pregunta
For magnetic flux density, which named SI unit has the coherent base-unit expression kg·s⁻²·A⁻¹?
Respuesta
tesla (T).
Tarjeta 89
Pregunta
For activity referred to a radionuclide, which named SI unit has the coherent base-unit expression s⁻¹?
Respuesta
becquerel (Bq).
Tarjeta 90
Pregunta
For solid angle, which named SI unit has the coherent base-unit expression 1?
Respuesta
steradian (sr).
Tarjeta 91
Pregunta
For power or radiant flux, which named SI unit has the coherent base-unit expression kg·m²·s⁻³?
Respuesta
watt (W).
Tarjeta 92
Pregunta
For electric conductance, which named SI unit has the coherent base-unit expression kg⁻¹·m⁻²·s³·A²?
Respuesta
siemens (S).
Tarjeta 93
Pregunta
For luminous flux, which named SI unit has the coherent base-unit expression cd·sr?
Respuesta
lumen (lm).
Tarjeta 94
Pregunta
For catalytic activity, which named SI unit has the coherent base-unit expression mol·s⁻¹?
Respuesta
katal (kat).
Tarjeta 95
Pregunta
For pressure or stress, which named SI unit has the coherent base-unit expression kg·m⁻¹·s⁻²?
Respuesta
pascal (Pa).
Tarjeta 96
Pregunta
For capacitance, which named SI unit has the coherent base-unit expression kg⁻¹·m⁻²·s⁴·A²?
Respuesta
farad (F).
Tarjeta 97
Pregunta
For inductance, which named SI unit has the coherent base-unit expression kg·m²·s⁻²·A⁻²?
Respuesta
henry (H).
Tarjeta 98
Pregunta
For absorbed dose or kerma, which named SI unit has the coherent base-unit expression m²·s⁻²?
Respuesta
gray (Gy).
Tarjeta 99
Pregunta
For frequency, which named SI unit has the coherent base-unit expression s⁻¹?
Respuesta
hertz (Hz).
Tarjeta 100
Pregunta
For electric charge, which named SI unit has the coherent base-unit expression A·s?
Respuesta
coulomb (C).
Tarjeta 101
Pregunta
For magnetic flux, which named SI unit has the coherent base-unit expression kg·m²·s⁻²·A⁻¹?
Respuesta
weber (Wb).
Tarjeta 102
Pregunta
For illuminance, which named SI unit has the coherent base-unit expression cd·sr·m⁻²?
Respuesta
lux (lx).
Tarjeta 103
Pregunta
How are SI unit names capitalized in English?
Respuesta
They normally start with a lowercase letter, even when named after a person. Within this deck, the proper-name modifier in degree Celsius keeps its capital C.
Tarjeta 104
Pregunta
What determines capitalization in an SI unit symbol?
Respuesta
Symbols derived from proper names start with a capital letter; the others are lowercase. Case is mandatory and meaningful.
Tarjeta 105
Pregunta
How do SI unit symbols behave in plurals and at sentence endings?
Respuesta
They never take a plural ending, and they take no period unless the symbol ends a sentence. Unit symbols are mathematical symbols, not abbreviations.
Tarjeta 106
Pregunta
How should a number and an SI unit symbol be spaced?
Respuesta
Put a space between them: 25 m and 20 °C. In °C, the degree sign and C stay together.
Tarjeta 107
Pregunta
Both hertz and becquerel reduce to s⁻¹. When is each used?
Respuesta
Use hertz (Hz) for periodic phenomena and becquerel (Bq) for activity referred to a radionuclide. The shared expression doesn't make the quantities interchangeable.
Tarjeta 108
Pregunta
Both gray and sievert reduce to m²·s⁻². What distinguishes them?
Respuesta
Gray (Gy) is used for absorbed dose or kerma; sievert (Sv) is used for dose equivalent. The quantity context determines the special name.
Tarjeta 109
Pregunta
Radian and steradian both have coherent unit expression 1. What distinguishes them?
Respuesta
Radian (rad) is used for plane angle; steradian (sr) is used for solid angle. Their symbols preserve the quantity context.
Tarjeta 110
Pregunta
For temperature intervals, how do kelvin and degrees Celsius compare?
Respuesta
A change of 1 K equals a change of 1 °C. Their zero points differ, so absolute temperatures aren't numerically equal.
110 tarjetas
SI Units Flashcards: 7 Base Units & 22 Named Derived Units
Flashcards se abrirá para que puedas empezar a estudiar.