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