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.
Über dieses Lernkartenset
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.
Karten in diesem Lernkartenset
Karte 1
Frage
What is the SI base unit for time?
Antwort
second (s).
Karte 2
Frage
What is the SI base unit for length?
Antwort
metre (m).
Karte 3
Frage
What is the SI base unit for mass?
Antwort
kilogram (kg).
Karte 4
Frage
What is the SI base unit for electric current?
Antwort
ampere (A).
Karte 5
Frage
What is the SI base unit for thermodynamic temperature?
Antwort
kelvin (K).
Karte 6
Frage
What is the SI base unit for amount of substance?
Antwort
mole (mol).
Karte 7
Frage
What is the SI base unit for luminous intensity?
Antwort
candela (cd).
Karte 8
Frage
Which SI base quantity uses the second (s)?
Antwort
Time.
Karte 9
Frage
Which SI base quantity uses the metre (m)?
Antwort
Length.
Karte 10
Frage
Which SI base quantity uses the kilogram (kg)?
Antwort
Mass.
Karte 11
Frage
Which SI base quantity uses the ampere (A)?
Antwort
Electric current.
Karte 12
Frage
Which SI base quantity uses the kelvin (K)?
Antwort
Thermodynamic temperature.
Karte 13
Frage
Which SI base quantity uses the mole (mol)?
Antwort
Amount of substance.
Karte 14
Frage
Which SI base quantity uses the candela (cd)?
Antwort
Luminous intensity.
Karte 15
Frage
Which SI unit with a special name is used for plane angle?
Antwort
radian (rad).
Karte 16
Frage
Which SI unit with a special name is used for energy, work, or amount of heat?
Antwort
joule (J).
Karte 17
Frage
Which SI unit with a special name is used for electric resistance?
Antwort
ohm (Ω).
Karte 18
Frage
Which SI unit with a special name is used for Celsius temperature?
Antwort
degree Celsius (°C).
Karte 19
Frage
Which SI unit with a special name is used for dose equivalent?
Antwort
sievert (Sv).
Karte 20
Frage
Which SI unit with a special name is used for force?
Antwort
newton (N).
Karte 21
Frage
Which SI unit with a special name is used for electric potential difference?
Antwort
volt (V).
Karte 22
Frage
Which SI unit with a special name is used for magnetic flux density?
Antwort
tesla (T).
Karte 23
Frage
Which SI unit with a special name is used for activity referred to a radionuclide?
Antwort
becquerel (Bq).
Karte 24
Frage
Which SI unit with a special name is used for solid angle?
Antwort
steradian (sr).
Karte 25
Frage
Which SI unit with a special name is used for power or radiant flux?
Antwort
watt (W).
Karte 26
Frage
Which SI unit with a special name is used for electric conductance?
Antwort
siemens (S).
Karte 27
Frage
Which SI unit with a special name is used for luminous flux?
Antwort
lumen (lm).
Karte 28
Frage
Which SI unit with a special name is used for catalytic activity?
Antwort
katal (kat).
Karte 29
Frage
Which SI unit with a special name is used for pressure or stress?
Antwort
pascal (Pa).
Karte 30
Frage
Which SI unit with a special name is used for capacitance?
Antwort
farad (F).
Karte 31
Frage
Which SI unit with a special name is used for inductance?
Antwort
henry (H).
Karte 32
Frage
Which SI unit with a special name is used for absorbed dose or kerma?
Antwort
gray (Gy).
Karte 33
Frage
Which SI unit with a special name is used for frequency?
Antwort
hertz (Hz).
Karte 34
Frage
Which SI unit with a special name is used for electric charge?
Antwort
coulomb (C).
Karte 35
Frage
Which SI unit with a special name is used for magnetic flux?
Antwort
weber (Wb).
Karte 36
Frage
Which SI unit with a special name is used for illuminance?
Antwort
lux (lx).
Karte 37
Frage
What quantity uses the radian (rad)?
Antwort
Plane angle.
Karte 38
Frage
What quantity uses the joule (J)?
Antwort
Energy, work, and amount of heat.
Karte 39
Frage
What quantity uses the ohm (Ω)?
Antwort
Electric resistance.
Karte 40
Frage
What quantity uses the degree Celsius (°C)?
Antwort
Celsius temperature.
Karte 41
Frage
What quantity uses the sievert (Sv)?
Antwort
Dose equivalent.
Karte 42
Frage
What quantity uses the newton (N)?
Antwort
Force.
Karte 43
Frage
What quantity uses the volt (V)?
Antwort
Electric potential difference.
Karte 44
Frage
What quantity uses the tesla (T)?
Antwort
Magnetic flux density.
Karte 45
Frage
What quantity uses the becquerel (Bq)?
Antwort
Activity referred to a radionuclide.
Karte 46
Frage
What quantity uses the steradian (sr)?
Antwort
Solid angle.
Karte 47
Frage
What quantity uses the watt (W)?
Antwort
Power and radiant flux.
Karte 48
Frage
What quantity uses the siemens (S)?
Antwort
Electric conductance.
Karte 49
Frage
What quantity uses the lumen (lm)?
Antwort
Luminous flux.
Karte 50
Frage
What quantity uses the katal (kat)?
Antwort
Catalytic activity.
Karte 51
Frage
What quantity uses the pascal (Pa)?
Antwort
Pressure and stress.
Karte 52
Frage
What quantity uses the farad (F)?
Antwort
Capacitance.
Karte 53
Frage
What quantity uses the henry (H)?
Antwort
Inductance.
Karte 54
Frage
What quantity uses the gray (Gy)?
Antwort
Absorbed dose and kerma.
Karte 55
Frage
What quantity uses the hertz (Hz)?
Antwort
Frequency.
110 Karten
SI Units Flashcards: 7 Base Units & 22 Named Derived Units
Mit diesem Lernkartenset kostenlos lernenFlashcards wird geöffnet, damit du mit dem Lernen beginnen kannst.
Karte 56
Frage
What quantity uses the coulomb (C)?
Antwort
Electric charge.
Karte 57
Frage
What quantity uses the weber (Wb)?
Antwort
Magnetic flux.
Karte 58
Frage
What quantity uses the lux (lx)?
Antwort
Illuminance.
Karte 59
Frage
Express the radian (rad) in coherent SI base units.
Antwort
1. The symbol rad keeps the plane-angle context explicit.
Karte 60
Frage
Express the joule (J) in coherent SI base units.
Antwort
kg·m²·s⁻².
Karte 61
Frage
Express the ohm (Ω) in coherent SI base units.
Antwort
kg·m²·s⁻³·A⁻².
Karte 62
Frage
Express the degree Celsius (°C) in coherent SI base units.
Antwort
K. A degree Celsius and a kelvin have the same size; their zero points differ.
Karte 63
Frage
Express the sievert (Sv) in coherent SI base units.
Antwort
m²·s⁻².
Karte 64
Frage
Express the newton (N) in coherent SI base units.
Antwort
kg·m·s⁻².
Karte 65
Frage
Express the volt (V) in coherent SI base units.
Antwort
kg·m²·s⁻³·A⁻¹.
Karte 66
Frage
Express the tesla (T) in coherent SI base units.
Antwort
kg·s⁻²·A⁻¹.
Karte 67
Frage
Express the becquerel (Bq) in coherent SI base units.
Antwort
s⁻¹. Use Bq for stochastic nuclear transformations, not periodic phenomena.
Karte 68
Frage
Express the steradian (sr) in coherent SI base units.
Antwort
1. The symbol sr keeps the solid-angle context explicit.
Karte 69
Frage
Express the watt (W) in coherent SI base units.
Antwort
kg·m²·s⁻³.
Karte 70
Frage
Express the siemens (S) in coherent SI base units.
Antwort
kg⁻¹·m⁻²·s³·A².
Karte 71
Frage
Express the lumen (lm) in coherent SI base units.
Antwort
cd·sr. Since sr has unit one, this is dimensionally cd; sr keeps the solid-angle context explicit.
Karte 72
Frage
Express the katal (kat) in coherent SI base units.
Antwort
mol·s⁻¹.
Karte 73
Frage
Express the pascal (Pa) in coherent SI base units.
Antwort
kg·m⁻¹·s⁻².
Karte 74
Frage
Express the farad (F) in coherent SI base units.
Antwort
kg⁻¹·m⁻²·s⁴·A².
Karte 75
Frage
Express the henry (H) in coherent SI base units.
Antwort
kg·m²·s⁻²·A⁻².
Karte 76
Frage
Express the gray (Gy) in coherent SI base units.
Antwort
m²·s⁻².
Karte 77
Frage
Express the hertz (Hz) in coherent SI base units.
Antwort
s⁻¹. Use Hz for periodic phenomena.
Karte 78
Frage
Express the coulomb (C) in coherent SI base units.
Antwort
A·s.
Karte 79
Frage
Express the weber (Wb) in coherent SI base units.
Antwort
kg·m²·s⁻²·A⁻¹.
Karte 80
Frage
Express the lux (lx) in coherent SI base units.
Antwort
cd·sr·m⁻². Since sr has unit one, this is dimensionally cd·m⁻²; sr keeps the solid-angle context explicit.
Karte 81
Frage
For plane angle, which named SI unit has the coherent base-unit expression 1?
Antwort
radian (rad).
Karte 82
Frage
For energy, work, or amount of heat, which named SI unit has the coherent base-unit expression kg·m²·s⁻²?
Antwort
joule (J).
Karte 83
Frage
For electric resistance, which named SI unit has the coherent base-unit expression kg·m²·s⁻³·A⁻²?
Antwort
ohm (Ω).
Karte 84
Frage
For Celsius temperature, which named SI unit has the coherent base-unit expression K?
Antwort
degree Celsius (°C).
Karte 85
Frage
For dose equivalent, which named SI unit has the coherent base-unit expression m²·s⁻²?
Antwort
sievert (Sv).
Karte 86
Frage
For force, which named SI unit has the coherent base-unit expression kg·m·s⁻²?
Antwort
newton (N).
Karte 87
Frage
For electric potential difference, which named SI unit has the coherent base-unit expression kg·m²·s⁻³·A⁻¹?
Antwort
volt (V).
Karte 88
Frage
For magnetic flux density, which named SI unit has the coherent base-unit expression kg·s⁻²·A⁻¹?
Antwort
tesla (T).
Karte 89
Frage
For activity referred to a radionuclide, which named SI unit has the coherent base-unit expression s⁻¹?
Antwort
becquerel (Bq).
Karte 90
Frage
For solid angle, which named SI unit has the coherent base-unit expression 1?
Antwort
steradian (sr).
Karte 91
Frage
For power or radiant flux, which named SI unit has the coherent base-unit expression kg·m²·s⁻³?
Antwort
watt (W).
Karte 92
Frage
For electric conductance, which named SI unit has the coherent base-unit expression kg⁻¹·m⁻²·s³·A²?
Antwort
siemens (S).
Karte 93
Frage
For luminous flux, which named SI unit has the coherent base-unit expression cd·sr?
Antwort
lumen (lm).
Karte 94
Frage
For catalytic activity, which named SI unit has the coherent base-unit expression mol·s⁻¹?
Antwort
katal (kat).
Karte 95
Frage
For pressure or stress, which named SI unit has the coherent base-unit expression kg·m⁻¹·s⁻²?
Antwort
pascal (Pa).
Karte 96
Frage
For capacitance, which named SI unit has the coherent base-unit expression kg⁻¹·m⁻²·s⁴·A²?
Antwort
farad (F).
Karte 97
Frage
For inductance, which named SI unit has the coherent base-unit expression kg·m²·s⁻²·A⁻²?
Antwort
henry (H).
Karte 98
Frage
For absorbed dose or kerma, which named SI unit has the coherent base-unit expression m²·s⁻²?
Antwort
gray (Gy).
Karte 99
Frage
For frequency, which named SI unit has the coherent base-unit expression s⁻¹?
Antwort
hertz (Hz).
Karte 100
Frage
For electric charge, which named SI unit has the coherent base-unit expression A·s?
Antwort
coulomb (C).
Karte 101
Frage
For magnetic flux, which named SI unit has the coherent base-unit expression kg·m²·s⁻²·A⁻¹?
Antwort
weber (Wb).
Karte 102
Frage
For illuminance, which named SI unit has the coherent base-unit expression cd·sr·m⁻²?
Antwort
lux (lx).
Karte 103
Frage
How are SI unit names capitalized in English?
Antwort
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.
Karte 104
Frage
What determines capitalization in an SI unit symbol?
Antwort
Symbols derived from proper names start with a capital letter; the others are lowercase. Case is mandatory and meaningful.
Karte 105
Frage
How do SI unit symbols behave in plurals and at sentence endings?
Antwort
They never take a plural ending, and they take no period unless the symbol ends a sentence. Unit symbols are mathematical symbols, not abbreviations.
Karte 106
Frage
How should a number and an SI unit symbol be spaced?
Antwort
Put a space between them: 25 m and 20 °C. In °C, the degree sign and C stay together.
Karte 107
Frage
Both hertz and becquerel reduce to s⁻¹. When is each used?
Antwort
Use hertz (Hz) for periodic phenomena and becquerel (Bq) for activity referred to a radionuclide. The shared expression doesn't make the quantities interchangeable.
Karte 108
Frage
Both gray and sievert reduce to m²·s⁻². What distinguishes them?
Antwort
Gray (Gy) is used for absorbed dose or kerma; sievert (Sv) is used for dose equivalent. The quantity context determines the special name.
Karte 109
Frage
Radian and steradian both have coherent unit expression 1. What distinguishes them?
Antwort
Radian (rad) is used for plane angle; steradian (sr) is used for solid angle. Their symbols preserve the quantity context.
Karte 110
Frage
For temperature intervals, how do kelvin and degrees Celsius compare?
Antwort
A change of 1 K equals a change of 1 °C. Their zero points differ, so absolute temperatures aren't numerically equal.
110 Karten
SI Units Flashcards: 7 Base Units & 22 Named Derived Units
Flashcards wird geöffnet, damit du mit dem Lernen beginnen kannst.