SI Units Flashcards

1
Q

What is the SI Unit for length?

A

meters (m)

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2
Q

What is the SI Unit for mass?

A

kilograms (kg)

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3
Q

What is the SI Unit for time?

A

seconds (s)

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4
Q

What is the SI Unit for electric current?

A

amperes (A)

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5
Q

What is the SI Unit for temperature?

A

kelvin (k)

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6
Q

What is the SI Unit for luminous intensity? (How bright is the light source?)

A

candela (cd)

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7
Q

What is the SI Unit for the amount of a substance?

A

moles (mol)

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8
Q

How many atoms or molecules are in one mole of a substance?

A

Avogadro’s Number = 6.022E23

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9
Q

What is the SI Unit for frequency?

A

hertz (Hz) which denotes cycles per second

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10
Q

What is the SI Unit for pressure?

A

the pascal (Pa)

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11
Q

What is the SI Unit for energy? (Such as thermal energy or work)

A

joules (J)

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12
Q

What is the SI Unit for volume?

A

liter (L)

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13
Q

What is the SI Unit for electric charge?

A

Coulombs (C)

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14
Q

What are the derived SI units for force?

A

Kg · m/s2

These SI units comprise the Newton (N)

F = ma

where:

m = Kg
a = m/s2

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15
Q

What are the derived SI units for thermal energy?

A

Kg · m2/s2

These SI units comprise the Joule (J)

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16
Q

What are the derived SI units for power?

A

Kg · m2/s3

These SI units comprise the watt (W)

17
Q

What are the derfived SI units for voltage?

A

Kg · m2/s3 · A

These SI units comprise the volt (V)

18
Q

What are the derived SI units for charge?

A

A · s

Amperes multiplied by time in seconds defines the Coulomb (C)