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S111 Topic 1 - hole in water > Maths - Units Of Area And Volume > Flashcards

Maths - Units Of Area And Volume Flashcards

1
Q

What is the Sl base unit of length?

A

Metre

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2
Q

What symbol is used for the unit metre?

A

m

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3
Q

What is the Sl base unit for time?

A

Second

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4
Q

What is the Sl base unit for mass?

A

Kilogram

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5
Q

What is the Sl base unit for temperature?

A

Kelvin

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6
Q

What is the Sl base unit for the amount of substance?

A

Mole

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7
Q

What is the Sl base unit for electric current?

A

Ampere

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8
Q

What is the Sl base unit for luminous intensity?

A

Candela

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9
Q

What symbol is used for the unit second?

A

s

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10
Q

What symbol is used for the unit kilogram?

A

kg

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11
Q

What symbol is used for the unit kelvin?

A

k

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12
Q

What symbol is used for the unit mole?

A

mol

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13
Q

What symbol is used for the unit ampere?

A

a

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14
Q

What symbol is used for the unit candela?

A

cd

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15
Q

What is it important to do do when writing a unit after a value?

A

Always leave a space between values and units

E.g. 3 cm not 3cm

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16
Q

Is case important when writing units after values?

A

Yes it should be written in lower case

E.g. kg

not KG or Kg

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17
Q

When should you only use the equals = sign?

A

When two things are equivalent to each other

And that includes having equal units

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18
Q

How many mm are there in a metre?

A

1000 mm

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19
Q

How many cm are there in a 10 mm?

A

1 cm

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20
Q

How many cm are there in a metre?

A

100 cm

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21
Q

How many cm are in 1ml?

A

1 cm 3 (to the power of 3)

Equal 1 ml
1 ml

22
Q

How many cm are there in a litre?

A

1000 cm 3 (to the power of 3)

23
Q

How many metres are in a kilometre?

A

1000 metres

24
Q

What does the prefix ‘kilo’ mean?

A

Denoting a thousand

25
Q

What does the prefix ‘milli’ mean?

A

Denoting a thousandth

E..g.
A millimetre is a thousandth of a metre

26
Q

What is a millimetre?

A

It’s a thousandth of a metre

27
Q

10 to the power of 3 is equal to ?

A

1000

28
Q

What prefixes are based on multiples of a 1000?

A

‘Kilo’

‘Milli’

29
Q

What does the prefix ‘centi’ indicate?

A

It indicated one hundredth

E.g. One centimetre is one hundredth of a metre
And
100 cm make up a metre

30
Q

How many kilometres are there in 1 metre?

A

0.001 km

31
Q

How many metres are there in 1 cm?

A

0.01 m

32
Q

How many metres are there in 1 mm?

A

0.001 m

33
Q

Which of the following are units of area?

```
Inch)2 (squared
s2 (squared)
cm2 (squared)
km3 (cubed)
Square miles
~~~

A

All except s2 (squared) and km3 (cubed)

km3 (cubed) is a unit of volume
s2 (squared) is a unit of time

34
Q

Calculate the area of a rug 50 cm by 2 m

A

50 cm = 0.5 m (there are 100 cm in 1 m)

0.5 m x 2 m

Or

0.5 x 2 x m x m
Area = 1 m2 (squared)

35
Q

Calculated the area of a phone screen which measures 65 mm long by 40 mm wide ?

A 
Area = 65 x 40 x mm x mm 
Area = 2600 mm2(squared)
36
Q

How do you calculate area?

A

Length x width

37
Q

How do you calculate volume?

A

Length x width x height

38
Q

Calculate the volume of a room measuring 5 m x 4 m x 3 m

A

5 x 4 x 3 x m x m x m

=60x m x m x m

= 60 m3 (cubed)

39
Q

Calculate

The volume of a phone which measures 10 cm by 5 cm by 6 mm in cubic centimetres

A

6 mm = 0.6 cm
10 x 5 x 0.6 x cm x cm x cm
=30 x cm x cm x cm
= 30 cm3 (cubed)

40
Q

Calculate the volume of a phone which measures 10 cm by 5 cm by 6 mm in mm3 (cubed)

A

10cm = 100 mm
50 cm = 50 mm

100 x 50 x 6 x mm x mm x mm

= 30 000 mm3 (cubed)

41
Q

Convert 50 cm3 (squared) to ml

A

50 ml

Is not cubed as ml is volume

42
Q

When converting litres to cm what must you remember?

A

To cube it

43
Q

When converting cm to litres what must you remember?

A

To not cube it, as litres represent volume

44
Q

Convert 500 cm3 (cubed) to litres

A 
1 cm3 (cubed) = 1 ml
So:
500 cm3 (cubed) = 500 ml
There is 1000 ml in a litre so:
500ml = 0.5 l
45
Q

Covert 3 litres to cm3 (cubed)

A

3000 cm3 (cubed)

46
Q

1 litre is equal to how many cm?

A

1000 cm3 (cubed)

47
Q

1 ml is equal to how many cm?

A

1 cm3 (cubed)

48
Q

…. kg = 8000 g

A

8 kg

49
Q

8000 g = ….. mg

A

8000000 mg

50
Q

Kilogram is the SI unit for?

A

Mass

S111 Topic 1 - hole in water (11 decks)

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