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