Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Primary FRCA MCQ > SI Units > Flashcards

SI Units Flashcards

1
Q

What does s stand for?

A

Seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How do you define a second?

A

The duration of a certain number of oscillations of a caesium-133 atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does mol stand for?

A

Mole. This is the amount of substance that contains the same number of particles as there are atoms in 0.012 kg (12 g) of carbon-12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does m stand for?

A

Metre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is a metre measured?

A

Length traveled by light in a vacuum in 1/300 000 000 of a second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does A stand for?

A

Ampere. It is a quantity related to electric current. The current in two parallel conductors of infinite length, placed 1 metre apart in a vacuum that would produce force of 2x10-7 N/m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does cd stand for?

A

Candela. This is related to intensity of illumination. It is the measurement of luminous intensity of monochromatic light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does K stand for?

A

Kelvin. This is a measure of thermodynamic temperature. It is the equivalent of -273 degrees centigrade.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does Kg stand for?

A

Kilograms. This is the only SI unit related to mass.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the derived unit for measuring area?

A

Square metres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the derived unit for measuring volume?

A

Cubic metres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the derived unit for measuring speed?

A

Metres per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the derived unit for measuring velocity?

A

Metres per second with direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the derived unit for measuring acceleration?

A

Metres per second squared

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the derived unit for measuring current density?

A

Ampere per square metre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the SI unit for pressure?

A

Pascal, Pa.

17
Q

What are Newtons the product of?

A

Mass x acceleration (Kg x m/s^2)

18
Q

The second is the time taken for light to travel a certain length in a vacuum T/F

A

False. A second is the duration of a certain number of oscillations of a caesium-133 atom. The description of the metre is based on light travelling in a vacuum.

19
Q

The base unit for weight is the kilogram T/F

A

False. The kilogram is the base unit for Mass. Weight is not a base unit at all: it is force acting upon mass. Hence, people on the moon have less force, i.e. gravity, acting upon them so they weigh less, even though their mass is exactly the same.

20
Q

The base unit for temperature is the Celsius T/F

A

False. The base unit for temperature is the Kelvin, which is Celsius minus 273.15.

21
Q

The base unit for length is the metre T/F

A

True

22
Q

The base unit for electrical current is the volt T/F

A

False. The base unit for electrical current is the Ampere.

23
Q

Derived units must always be expressed as base units T/F

A

False. The Pascal, for example, can be expressed as base units (kg/m-1/s-2) or a combination of base and derived units (N/m2).

24
Q

Velocity and speed have the same base units T/F

A

True. Speed is defined as m.s-1, Velocity is defined as m.s-1 but in a given direction.

25
Q

101.3 kPa is equivalent to 760 cm H2O T/F

A

False. It is equivalent to 760 mmHg. It would be equivalent to 1020 cmH2O.

26
Q

The litre is the SI unit for volume T/F

A

False. The cubic centimeter is the approved unit, with 1 cm3 being equivalent to 1ml.

27
Q

The kilopascal is the SI unit for pressure T/F

A

True. Although the pascal is the actual unit, by using the approved kilo- prefix, it is still classed as an SI unit.

28
Q

1 Bar is greater than 1 Atmosphere T/F

A

False. Although, for simplicity, both Bar and atmosphere are considered to have a value of 1, 1 atmosphere = 1.013 Bar.

29
Q

An ETCO2 of 3.5 kPa is equivalent to 27 mmHg T/F

A

True

30
Q

10 cmH2O is equivalent to 7.6 mmHg T/F

A

True

31
Q

In base units, what does kg x m2/s2 represent?

A

Joule

32
Q

In base units, what does kg x m/s2 represent?

A

Newton

33
Q

In base units, what does kg/m/s2 represent?

A

Pascal

34
Q

In base units, what does m/s represent?

A

Speed

35
Q

In base units, what does kg x m2/s3/A2 represent?

A

Ohm

36
Q

1 ATM = 1.013 Bar = 101.3 kPa = 760 mmHg = 1020 cmH20

A

Equivalences

Primary FRCA MCQ (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions