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