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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.

作成者 Open Study Contributor

このデッキについて

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

  • Quantity ↔ unit and symbol: recall each base quantity and every named derived quantity in both directions.

  • Named unit ↔ coherent base-unit expression: expand all 22 special names, then reverse the mapping with the quantity supplied whenever an expression is shared.

  • 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.

このデッキのカード

  1. カード 1

    質問

    What is the SI base unit for time?

    回答

    second (s).

  2. カード 2

    質問

    What is the SI base unit for length?

    回答

    metre (m).

  3. カード 3

    質問

    What is the SI base unit for mass?

    回答

    kilogram (kg).

  4. カード 4

    質問

    What is the SI base unit for electric current?

    回答

    ampere (A).

  5. カード 5

    質問

    What is the SI base unit for thermodynamic temperature?

    回答

    kelvin (K).

  6. カード 6

    質問

    What is the SI base unit for amount of substance?

    回答

    mole (mol).

  7. カード 7

    質問

    What is the SI base unit for luminous intensity?

    回答

    candela (cd).

  8. カード 8

    質問

    Which SI base quantity uses the second (s)?

    回答

    Time.

  9. カード 9

    質問

    Which SI base quantity uses the metre (m)?

    回答

    Length.

  10. カード 10

    質問

    Which SI base quantity uses the kilogram (kg)?

    回答

    Mass.

  11. カード 11

    質問

    Which SI base quantity uses the ampere (A)?

    回答

    Electric current.

  12. カード 12

    質問

    Which SI base quantity uses the kelvin (K)?

    回答

    Thermodynamic temperature.

  13. カード 13

    質問

    Which SI base quantity uses the mole (mol)?

    回答

    Amount of substance.

  14. カード 14

    質問

    Which SI base quantity uses the candela (cd)?

    回答

    Luminous intensity.

  15. カード 15

    質問

    Which SI unit with a special name is used for plane angle?

    回答

    radian (rad).

  16. カード 16

    質問

    Which SI unit with a special name is used for energy, work, or amount of heat?

    回答

    joule (J).

  17. カード 17

    質問

    Which SI unit with a special name is used for electric resistance?

    回答

    ohm (Ω).

  18. カード 18

    質問

    Which SI unit with a special name is used for Celsius temperature?

    回答

    degree Celsius (°C).

  19. カード 19

    質問

    Which SI unit with a special name is used for dose equivalent?

    回答

    sievert (Sv).

  20. カード 20

    質問

    Which SI unit with a special name is used for force?

    回答

    newton (N).

  21. カード 21

    質問

    Which SI unit with a special name is used for electric potential difference?

    回答

    volt (V).

  22. カード 22

    質問

    Which SI unit with a special name is used for magnetic flux density?

    回答

    tesla (T).

  23. カード 23

    質問

    Which SI unit with a special name is used for activity referred to a radionuclide?

    回答

    becquerel (Bq).

  24. カード 24

    質問

    Which SI unit with a special name is used for solid angle?

    回答

    steradian (sr).

  25. カード 25

    質問

    Which SI unit with a special name is used for power or radiant flux?

    回答

    watt (W).

  26. カード 26

    質問

    Which SI unit with a special name is used for electric conductance?

    回答

    siemens (S).

  27. カード 27

    質問

    Which SI unit with a special name is used for luminous flux?

    回答

    lumen (lm).

  28. カード 28

    質問

    Which SI unit with a special name is used for catalytic activity?

    回答

    katal (kat).

  29. カード 29

    質問

    Which SI unit with a special name is used for pressure or stress?

    回答

    pascal (Pa).

  30. カード 30

    質問

    Which SI unit with a special name is used for capacitance?

    回答

    farad (F).

  31. カード 31

    質問

    Which SI unit with a special name is used for inductance?

    回答

    henry (H).

  32. カード 32

    質問

    Which SI unit with a special name is used for absorbed dose or kerma?

    回答

    gray (Gy).

  33. カード 33

    質問

    Which SI unit with a special name is used for frequency?

    回答

    hertz (Hz).

  34. カード 34

    質問

    Which SI unit with a special name is used for electric charge?

    回答

    coulomb (C).

  35. カード 35

    質問

    Which SI unit with a special name is used for magnetic flux?

    回答

    weber (Wb).

  36. カード 36

    質問

    Which SI unit with a special name is used for illuminance?

    回答

    lux (lx).

  37. カード 37

    質問

    What quantity uses the radian (rad)?

    回答

    Plane angle.

  38. カード 38

    質問

    What quantity uses the joule (J)?

    回答

    Energy, work, and amount of heat.

  39. カード 39

    質問

    What quantity uses the ohm (Ω)?

    回答

    Electric resistance.

  40. カード 40

    質問

    What quantity uses the degree Celsius (°C)?

    回答

    Celsius temperature.

  41. カード 41

    質問

    What quantity uses the sievert (Sv)?

    回答

    Dose equivalent.

  42. カード 42

    質問

    What quantity uses the newton (N)?

    回答

    Force.

  43. カード 43

    質問

    What quantity uses the volt (V)?

    回答

    Electric potential difference.

  44. カード 44

    質問

    What quantity uses the tesla (T)?

    回答

    Magnetic flux density.

  45. カード 45

    質問

    What quantity uses the becquerel (Bq)?

    回答

    Activity referred to a radionuclide.

  46. カード 46

    質問

    What quantity uses the steradian (sr)?

    回答

    Solid angle.

  47. カード 47

    質問

    What quantity uses the watt (W)?

    回答

    Power and radiant flux.

  48. カード 48

    質問

    What quantity uses the siemens (S)?

    回答

    Electric conductance.

  49. カード 49

    質問

    What quantity uses the lumen (lm)?

    回答

    Luminous flux.

  50. カード 50

    質問

    What quantity uses the katal (kat)?

    回答

    Catalytic activity.

  51. カード 51

    質問

    What quantity uses the pascal (Pa)?

    回答

    Pressure and stress.

  52. カード 52

    質問

    What quantity uses the farad (F)?

    回答

    Capacitance.

  53. カード 53

    質問

    What quantity uses the henry (H)?

    回答

    Inductance.

  54. カード 54

    質問

    What quantity uses the gray (Gy)?

    回答

    Absorbed dose and kerma.

  55. カード 55

    質問

    What quantity uses the hertz (Hz)?

    回答

    Frequency.

    Abstract glowing measurement forms connected in a geometric system on a dark blue background.

    110枚のカード

    SI Units Flashcards: 7 Base Units & 22 Named Derived Units

    このデッキを無料で学習

    Flashcards が開き、すぐに学習を始められます。

  56. カード 56

    質問

    What quantity uses the coulomb (C)?

    回答

    Electric charge.

  57. カード 57

    質問

    What quantity uses the weber (Wb)?

    回答

    Magnetic flux.

  58. カード 58

    質問

    What quantity uses the lux (lx)?

    回答

    Illuminance.

  59. カード 59

    質問

    Express the radian (rad) in coherent SI base units.

    回答

    1. The symbol rad keeps the plane-angle context explicit.

  60. カード 60

    質問

    Express the joule (J) in coherent SI base units.

    回答

    kg·m²·s⁻².

  61. カード 61

    質問

    Express the ohm (Ω) in coherent SI base units.

    回答

    kg·m²·s⁻³·A⁻².

  62. カード 62

    質問

    Express the degree Celsius (°C) in coherent SI base units.

    回答

    K. A degree Celsius and a kelvin have the same size; their zero points differ.

  63. カード 63

    質問

    Express the sievert (Sv) in coherent SI base units.

    回答

    m²·s⁻².

  64. カード 64

    質問

    Express the newton (N) in coherent SI base units.

    回答

    kg·m·s⁻².

  65. カード 65

    質問

    Express the volt (V) in coherent SI base units.

    回答

    kg·m²·s⁻³·A⁻¹.

  66. カード 66

    質問

    Express the tesla (T) in coherent SI base units.

    回答

    kg·s⁻²·A⁻¹.

  67. カード 67

    質問

    Express the becquerel (Bq) in coherent SI base units.

    回答

    s⁻¹. Use Bq for stochastic nuclear transformations, not periodic phenomena.

  68. カード 68

    質問

    Express the steradian (sr) in coherent SI base units.

    回答

    1. The symbol sr keeps the solid-angle context explicit.

  69. カード 69

    質問

    Express the watt (W) in coherent SI base units.

    回答

    kg·m²·s⁻³.

  70. カード 70

    質問

    Express the siemens (S) in coherent SI base units.

    回答

    kg⁻¹·m⁻²·s³·A².

  71. カード 71

    質問

    Express the lumen (lm) in coherent SI base units.

    回答

    cd·sr. Since sr has unit one, this is dimensionally cd; sr keeps the solid-angle context explicit.

  72. カード 72

    質問

    Express the katal (kat) in coherent SI base units.

    回答

    mol·s⁻¹.

  73. カード 73

    質問

    Express the pascal (Pa) in coherent SI base units.

    回答

    kg·m⁻¹·s⁻².

  74. カード 74

    質問

    Express the farad (F) in coherent SI base units.

    回答

    kg⁻¹·m⁻²·s⁴·A².

  75. カード 75

    質問

    Express the henry (H) in coherent SI base units.

    回答

    kg·m²·s⁻²·A⁻².

  76. カード 76

    質問

    Express the gray (Gy) in coherent SI base units.

    回答

    m²·s⁻².

  77. カード 77

    質問

    Express the hertz (Hz) in coherent SI base units.

    回答

    s⁻¹. Use Hz for periodic phenomena.

  78. カード 78

    質問

    Express the coulomb (C) in coherent SI base units.

    回答

    A·s.

  79. カード 79

    質問

    Express the weber (Wb) in coherent SI base units.

    回答

    kg·m²·s⁻²·A⁻¹.

  80. カード 80

    質問

    Express the lux (lx) in coherent SI base units.

    回答

    cd·sr·m⁻². Since sr has unit one, this is dimensionally cd·m⁻²; sr keeps the solid-angle context explicit.

  81. カード 81

    質問

    For plane angle, which named SI unit has the coherent base-unit expression 1?

    回答

    radian (rad).

  82. カード 82

    質問

    For energy, work, or amount of heat, which named SI unit has the coherent base-unit expression kg·m²·s⁻²?

    回答

    joule (J).

  83. カード 83

    質問

    For electric resistance, which named SI unit has the coherent base-unit expression kg·m²·s⁻³·A⁻²?

    回答

    ohm (Ω).

  84. カード 84

    質問

    For Celsius temperature, which named SI unit has the coherent base-unit expression K?

    回答

    degree Celsius (°C).

  85. カード 85

    質問

    For dose equivalent, which named SI unit has the coherent base-unit expression m²·s⁻²?

    回答

    sievert (Sv).

  86. カード 86

    質問

    For force, which named SI unit has the coherent base-unit expression kg·m·s⁻²?

    回答

    newton (N).

  87. カード 87

    質問

    For electric potential difference, which named SI unit has the coherent base-unit expression kg·m²·s⁻³·A⁻¹?

    回答

    volt (V).

  88. カード 88

    質問

    For magnetic flux density, which named SI unit has the coherent base-unit expression kg·s⁻²·A⁻¹?

    回答

    tesla (T).

  89. カード 89

    質問

    For activity referred to a radionuclide, which named SI unit has the coherent base-unit expression s⁻¹?

    回答

    becquerel (Bq).

  90. カード 90

    質問

    For solid angle, which named SI unit has the coherent base-unit expression 1?

    回答

    steradian (sr).

  91. カード 91

    質問

    For power or radiant flux, which named SI unit has the coherent base-unit expression kg·m²·s⁻³?

    回答

    watt (W).

  92. カード 92

    質問

    For electric conductance, which named SI unit has the coherent base-unit expression kg⁻¹·m⁻²·s³·A²?

    回答

    siemens (S).

  93. カード 93

    質問

    For luminous flux, which named SI unit has the coherent base-unit expression cd·sr?

    回答

    lumen (lm).

  94. カード 94

    質問

    For catalytic activity, which named SI unit has the coherent base-unit expression mol·s⁻¹?

    回答

    katal (kat).

  95. カード 95

    質問

    For pressure or stress, which named SI unit has the coherent base-unit expression kg·m⁻¹·s⁻²?

    回答

    pascal (Pa).

  96. カード 96

    質問

    For capacitance, which named SI unit has the coherent base-unit expression kg⁻¹·m⁻²·s⁴·A²?

    回答

    farad (F).

  97. カード 97

    質問

    For inductance, which named SI unit has the coherent base-unit expression kg·m²·s⁻²·A⁻²?

    回答

    henry (H).

  98. カード 98

    質問

    For absorbed dose or kerma, which named SI unit has the coherent base-unit expression m²·s⁻²?

    回答

    gray (Gy).

  99. カード 99

    質問

    For frequency, which named SI unit has the coherent base-unit expression s⁻¹?

    回答

    hertz (Hz).

  100. カード 100

    質問

    For electric charge, which named SI unit has the coherent base-unit expression A·s?

    回答

    coulomb (C).

  101. カード 101

    質問

    For magnetic flux, which named SI unit has the coherent base-unit expression kg·m²·s⁻²·A⁻¹?

    回答

    weber (Wb).

  102. カード 102

    質問

    For illuminance, which named SI unit has the coherent base-unit expression cd·sr·m⁻²?

    回答

    lux (lx).

  103. カード 103

    質問

    How are SI unit names capitalized in English?

    回答

    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.

  104. カード 104

    質問

    What determines capitalization in an SI unit symbol?

    回答

    Symbols derived from proper names start with a capital letter; the others are lowercase. Case is mandatory and meaningful.

  105. カード 105

    質問

    How do SI unit symbols behave in plurals and at sentence endings?

    回答

    They never take a plural ending, and they take no period unless the symbol ends a sentence. Unit symbols are mathematical symbols, not abbreviations.

  106. カード 106

    質問

    How should a number and an SI unit symbol be spaced?

    回答

    Put a space between them: 25 m and 20 °C. In °C, the degree sign and C stay together.

  107. カード 107

    質問

    Both hertz and becquerel reduce to s⁻¹. When is each used?

    回答

    Use hertz (Hz) for periodic phenomena and becquerel (Bq) for activity referred to a radionuclide. The shared expression doesn't make the quantities interchangeable.

  108. カード 108

    質問

    Both gray and sievert reduce to m²·s⁻². What distinguishes them?

    回答

    Gray (Gy) is used for absorbed dose or kerma; sievert (Sv) is used for dose equivalent. The quantity context determines the special name.

  109. カード 109

    質問

    Radian and steradian both have coherent unit expression 1. What distinguishes them?

    回答

    Radian (rad) is used for plane angle; steradian (sr) is used for solid angle. Their symbols preserve the quantity context.

  110. カード 110

    質問

    For temperature intervals, how do kelvin and degrees Celsius compare?

    回答

    A change of 1 K equals a change of 1 °C. Their zero points differ, so absolute temperatures aren't numerically equal.

Abstract glowing measurement forms connected in a geometric system on a dark blue background.

110枚のカード

SI Units Flashcards: 7 Base Units & 22 Named Derived Units

このデッキを無料で学習

Flashcards が開き、すぐに学習を始められます。