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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.

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O ovom špilu

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.

Kartice u ovom špilu

  1. Kartica 1

    Pitanje

    What is the SI base unit for time?

    Odgovor

    second (s).

  2. Kartica 2

    Pitanje

    What is the SI base unit for length?

    Odgovor

    metre (m).

  3. Kartica 3

    Pitanje

    What is the SI base unit for mass?

    Odgovor

    kilogram (kg).

  4. Kartica 4

    Pitanje

    What is the SI base unit for electric current?

    Odgovor

    ampere (A).

  5. Kartica 5

    Pitanje

    What is the SI base unit for thermodynamic temperature?

    Odgovor

    kelvin (K).

  6. Kartica 6

    Pitanje

    What is the SI base unit for amount of substance?

    Odgovor

    mole (mol).

  7. Kartica 7

    Pitanje

    What is the SI base unit for luminous intensity?

    Odgovor

    candela (cd).

  8. Kartica 8

    Pitanje

    Which SI base quantity uses the second (s)?

    Odgovor

    Time.

  9. Kartica 9

    Pitanje

    Which SI base quantity uses the metre (m)?

    Odgovor

    Length.

  10. Kartica 10

    Pitanje

    Which SI base quantity uses the kilogram (kg)?

    Odgovor

    Mass.

  11. Kartica 11

    Pitanje

    Which SI base quantity uses the ampere (A)?

    Odgovor

    Electric current.

  12. Kartica 12

    Pitanje

    Which SI base quantity uses the kelvin (K)?

    Odgovor

    Thermodynamic temperature.

  13. Kartica 13

    Pitanje

    Which SI base quantity uses the mole (mol)?

    Odgovor

    Amount of substance.

  14. Kartica 14

    Pitanje

    Which SI base quantity uses the candela (cd)?

    Odgovor

    Luminous intensity.

  15. Kartica 15

    Pitanje

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

    Odgovor

    radian (rad).

  16. Kartica 16

    Pitanje

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

    Odgovor

    joule (J).

  17. Kartica 17

    Pitanje

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

    Odgovor

    ohm (Ω).

  18. Kartica 18

    Pitanje

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

    Odgovor

    degree Celsius (°C).

  19. Kartica 19

    Pitanje

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

    Odgovor

    sievert (Sv).

  20. Kartica 20

    Pitanje

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

    Odgovor

    newton (N).

  21. Kartica 21

    Pitanje

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

    Odgovor

    volt (V).

  22. Kartica 22

    Pitanje

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

    Odgovor

    tesla (T).

  23. Kartica 23

    Pitanje

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

    Odgovor

    becquerel (Bq).

  24. Kartica 24

    Pitanje

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

    Odgovor

    steradian (sr).

  25. Kartica 25

    Pitanje

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

    Odgovor

    watt (W).

  26. Kartica 26

    Pitanje

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

    Odgovor

    siemens (S).

  27. Kartica 27

    Pitanje

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

    Odgovor

    lumen (lm).

  28. Kartica 28

    Pitanje

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

    Odgovor

    katal (kat).

  29. Kartica 29

    Pitanje

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

    Odgovor

    pascal (Pa).

  30. Kartica 30

    Pitanje

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

    Odgovor

    farad (F).

  31. Kartica 31

    Pitanje

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

    Odgovor

    henry (H).

  32. Kartica 32

    Pitanje

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

    Odgovor

    gray (Gy).

  33. Kartica 33

    Pitanje

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

    Odgovor

    hertz (Hz).

  34. Kartica 34

    Pitanje

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

    Odgovor

    coulomb (C).

  35. Kartica 35

    Pitanje

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

    Odgovor

    weber (Wb).

  36. Kartica 36

    Pitanje

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

    Odgovor

    lux (lx).

  37. Kartica 37

    Pitanje

    What quantity uses the radian (rad)?

    Odgovor

    Plane angle.

  38. Kartica 38

    Pitanje

    What quantity uses the joule (J)?

    Odgovor

    Energy, work, and amount of heat.

  39. Kartica 39

    Pitanje

    What quantity uses the ohm (Ω)?

    Odgovor

    Electric resistance.

  40. Kartica 40

    Pitanje

    What quantity uses the degree Celsius (°C)?

    Odgovor

    Celsius temperature.

  41. Kartica 41

    Pitanje

    What quantity uses the sievert (Sv)?

    Odgovor

    Dose equivalent.

  42. Kartica 42

    Pitanje

    What quantity uses the newton (N)?

    Odgovor

    Force.

  43. Kartica 43

    Pitanje

    What quantity uses the volt (V)?

    Odgovor

    Electric potential difference.

  44. Kartica 44

    Pitanje

    What quantity uses the tesla (T)?

    Odgovor

    Magnetic flux density.

  45. Kartica 45

    Pitanje

    What quantity uses the becquerel (Bq)?

    Odgovor

    Activity referred to a radionuclide.

  46. Kartica 46

    Pitanje

    What quantity uses the steradian (sr)?

    Odgovor

    Solid angle.

  47. Kartica 47

    Pitanje

    What quantity uses the watt (W)?

    Odgovor

    Power and radiant flux.

  48. Kartica 48

    Pitanje

    What quantity uses the siemens (S)?

    Odgovor

    Electric conductance.

  49. Kartica 49

    Pitanje

    What quantity uses the lumen (lm)?

    Odgovor

    Luminous flux.

  50. Kartica 50

    Pitanje

    What quantity uses the katal (kat)?

    Odgovor

    Catalytic activity.

  51. Kartica 51

    Pitanje

    What quantity uses the pascal (Pa)?

    Odgovor

    Pressure and stress.

  52. Kartica 52

    Pitanje

    What quantity uses the farad (F)?

    Odgovor

    Capacitance.

  53. Kartica 53

    Pitanje

    What quantity uses the henry (H)?

    Odgovor

    Inductance.

  54. Kartica 54

    Pitanje

    What quantity uses the gray (Gy)?

    Odgovor

    Absorbed dose and kerma.

  55. Kartica 55

    Pitanje

    What quantity uses the hertz (Hz)?

    Odgovor

    Frequency.

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

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  56. Kartica 56

    Pitanje

    What quantity uses the coulomb (C)?

    Odgovor

    Electric charge.

  57. Kartica 57

    Pitanje

    What quantity uses the weber (Wb)?

    Odgovor

    Magnetic flux.

  58. Kartica 58

    Pitanje

    What quantity uses the lux (lx)?

    Odgovor

    Illuminance.

  59. Kartica 59

    Pitanje

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

    Odgovor

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

  60. Kartica 60

    Pitanje

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

    Odgovor

    kg·m²·s⁻².

  61. Kartica 61

    Pitanje

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

    Odgovor

    kg·m²·s⁻³·A⁻².

  62. Kartica 62

    Pitanje

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

    Odgovor

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

  63. Kartica 63

    Pitanje

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

    Odgovor

    m²·s⁻².

  64. Kartica 64

    Pitanje

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

    Odgovor

    kg·m·s⁻².

  65. Kartica 65

    Pitanje

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

    Odgovor

    kg·m²·s⁻³·A⁻¹.

  66. Kartica 66

    Pitanje

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

    Odgovor

    kg·s⁻²·A⁻¹.

  67. Kartica 67

    Pitanje

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

    Odgovor

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

  68. Kartica 68

    Pitanje

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

    Odgovor

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

  69. Kartica 69

    Pitanje

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

    Odgovor

    kg·m²·s⁻³.

  70. Kartica 70

    Pitanje

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

    Odgovor

    kg⁻¹·m⁻²·s³·A².

  71. Kartica 71

    Pitanje

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

    Odgovor

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

  72. Kartica 72

    Pitanje

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

    Odgovor

    mol·s⁻¹.

  73. Kartica 73

    Pitanje

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

    Odgovor

    kg·m⁻¹·s⁻².

  74. Kartica 74

    Pitanje

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

    Odgovor

    kg⁻¹·m⁻²·s⁴·A².

  75. Kartica 75

    Pitanje

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

    Odgovor

    kg·m²·s⁻²·A⁻².

  76. Kartica 76

    Pitanje

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

    Odgovor

    m²·s⁻².

  77. Kartica 77

    Pitanje

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

    Odgovor

    s⁻¹. Use Hz for periodic phenomena.

  78. Kartica 78

    Pitanje

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

    Odgovor

    A·s.

  79. Kartica 79

    Pitanje

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

    Odgovor

    kg·m²·s⁻²·A⁻¹.

  80. Kartica 80

    Pitanje

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

    Odgovor

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

  81. Kartica 81

    Pitanje

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

    Odgovor

    radian (rad).

  82. Kartica 82

    Pitanje

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

    Odgovor

    joule (J).

  83. Kartica 83

    Pitanje

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

    Odgovor

    ohm (Ω).

  84. Kartica 84

    Pitanje

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

    Odgovor

    degree Celsius (°C).

  85. Kartica 85

    Pitanje

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

    Odgovor

    sievert (Sv).

  86. Kartica 86

    Pitanje

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

    Odgovor

    newton (N).

  87. Kartica 87

    Pitanje

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

    Odgovor

    volt (V).

  88. Kartica 88

    Pitanje

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

    Odgovor

    tesla (T).

  89. Kartica 89

    Pitanje

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

    Odgovor

    becquerel (Bq).

  90. Kartica 90

    Pitanje

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

    Odgovor

    steradian (sr).

  91. Kartica 91

    Pitanje

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

    Odgovor

    watt (W).

  92. Kartica 92

    Pitanje

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

    Odgovor

    siemens (S).

  93. Kartica 93

    Pitanje

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

    Odgovor

    lumen (lm).

  94. Kartica 94

    Pitanje

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

    Odgovor

    katal (kat).

  95. Kartica 95

    Pitanje

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

    Odgovor

    pascal (Pa).

  96. Kartica 96

    Pitanje

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

    Odgovor

    farad (F).

  97. Kartica 97

    Pitanje

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

    Odgovor

    henry (H).

  98. Kartica 98

    Pitanje

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

    Odgovor

    gray (Gy).

  99. Kartica 99

    Pitanje

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

    Odgovor

    hertz (Hz).

  100. Kartica 100

    Pitanje

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

    Odgovor

    coulomb (C).

  101. Kartica 101

    Pitanje

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

    Odgovor

    weber (Wb).

  102. Kartica 102

    Pitanje

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

    Odgovor

    lux (lx).

  103. Kartica 103

    Pitanje

    How are SI unit names capitalized in English?

    Odgovor

    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. Kartica 104

    Pitanje

    What determines capitalization in an SI unit symbol?

    Odgovor

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

  105. Kartica 105

    Pitanje

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

    Odgovor

    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. Kartica 106

    Pitanje

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

    Odgovor

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

  107. Kartica 107

    Pitanje

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

    Odgovor

    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. Kartica 108

    Pitanje

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

    Odgovor

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

  109. Kartica 109

    Pitanje

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

    Odgovor

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

  110. Kartica 110

    Pitanje

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

    Odgovor

    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 kartica

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

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