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Scientific Principles > Standard Index > Flashcards

Standard Index Flashcards

1
Q

What is Length as a unit?

A

Meter

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2
Q

What is length as a symbol?

A

M

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3
Q

What is mass as a unit?

A

Kilogram

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4
Q

What is mass as a symbol?

A

KG

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5
Q

What is time as a unit?

A

Second

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6
Q

What is time as a symbol?

A

S

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7
Q

What is electric current as a unit?

A

Ampere

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8
Q

What is electric current as a symbol?

A

A

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9
Q

What is temperature as a unit?

A

Kelvin

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10
Q

What is temperature as a symbol?

A

K

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11
Q

What is velocity as a unit?

A

Meters per second

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12
Q

What is velocity as a symbol?

A

M/S

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13
Q

What is Acceleration as a unit?

A

Meters per second per squared

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14
Q

What is acceleration as a symbol?

A

M/S2

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15
Q

What is flow rate as a unit?

A

Litres per second or Litres per minute

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16
Q

What is Flow Rate as a symbol?

A

l/s or l/m

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17
Q

What is the unit for force?

A

Newtons

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18
Q

What is the symbol for force?

A

N

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19
Q

What is the unit for pressure?

A

Pascals (n/m2)

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20
Q

What is the symbol for pressure?

A

Pa

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21
Q

What is meant by the term SI?

A

7 base SI Units.
Offer one common system.

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22
Q

What is the unit for light?

A

Candela

23
Q

What is 0 kelvin in celsius?

A

-273

24
Q

What is pie (TT) ?

A

3.142

25
Q

How do you figure out the different between Kelvin and Celsius?

A

+273 each time.

26
Q

What is the forumla to work out C to K?

A

+273

27
Q

What is the formula to work out K to C?

A

-273

28
Q

Explain what is meant by the term ΔT and an example of where it may be used?

A

Delta Temperature - Difference in temperature.

29
Q

What symbol for area?

A

M2

30
Q

What is the symbol for volume?

A

M3

31
Q

What is the symbol for density?

A

kg / m3

32
Q

How do we work out area?

A

length x width

33
Q

How do we work out volume?

A

length x width x height

34
Q

How do we work out volume of liquid?

A

length x width x height x 1000)

35
Q

How do we work out force?

A

mass x acceleration

36
Q

What makes up joule?

A

Energy, work, quantity of heat.

37
Q

What is power measured in?

A

Watt

38
Q

What is electric potential measure in?

A

Volt

39
Q

What is electrical resistance measure in?

A

Ohm

40
Q

What is flow rate?

A

Flow rate is defined as an amount of liquid that flows through a pipe or tube over a period of time and is measured in litres per second.

41
Q

What is waters maximum density?

A

1000kg per cubic metre at 40c

42
Q

When temperature raises or lowers what happens to water density?

A

Looses density.

43
Q

When water is heated at 1000c what does it expand by?

A

4%

44
Q

When water is cooled at 1000c what does it expand by?

A

10%

45
Q

When water turns into steam at 1000c what does it expand by?

A

1,600 times

46
Q

What is pascal?

A

The unit of water pressure.

47
Q

How to work out the ‘head’ in pascal water pressure?

A

The pressure extered by water is due to its mass and is determined by the HEIGHT of the column of water (Head).

48
Q

Water pressure in plumbing systems is usually measured in bar pressure… what is the equation?

A

10m of head = 100kPa = 1 bar.
(Killopascals = kPa)

49
Q

What is velocity?

A

The measurement of the rate at which an object changes its position. In order to measure it you need to know the speed of the object and the direction in which it is traveling.

50
Q

What is acceleration?

A

Acceleration is a measure of the rate at which an object increases its velocity and is measured in meters per second (m/s2)

51
Q

What is the velocity rate of gravitational pull?

A

9.81m/s2 (meters per second)

52
Q

What does a small 2 on a measurement mean?

A

Squared.

53
Q

What does a small 3 on a measurement mean?

A

Cubic

Scientific Principles (3 decks)

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