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A-Level Maths > Large Data Set > Flashcards

Large Data Set Flashcards

1
Q

How to convert 1 knot to mph

A

Times by 1.151

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2
Q

What countries are included in the large data set

A

UK
Australia (Perth)
US (Jacksonville)
China (Beijing)

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3
Q

Where is include in the UK?

A 
Leuchars
Leeming
Heathrow
Hurn
Camborne
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4
Q

How is pressure measured

A

In hPa (hector pascals)

1/100 of a Pa

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5
Q

What is daily mean total cloud cover measured in

A

Oktas

How many eighths of the sky is covered

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6
Q

How is daily maximum humidity measured

A

As a % of max water vapour that could be in the air

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7
Q

Daily mean temperature

A

Celsius to one dp

Average of 24 hourly temp readings of air temp

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8
Q

Daily total rainfall

A

Amount of rainfall collected in millimetres from 9am including other precipitation (eg snow and hail) which has melted

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9
Q

When is daily rainfall classed as trace

A

When less than 0.05mm

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10
Q

Daily total sunshine

A

Measure of solar radiation exceeding a threshold

Measured in hours and tenths

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11
Q

Daily maximum humidity

A

How close the air is to being saturated with water as a %

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12
Q

What percentage usually indicates mist and fog?

A

95%

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13
Q

Daily mean wind speed

A

1 knot = 1.15 mph

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14
Q

Daily maximum gust

Direction?

A

Maximum reading during the day

Bearing

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15
Q

Daily mean wind direction

A

Average bearing to nearest 10 degrees

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16
Q

Cloud cover

A

Measured on oktas

How many eighths of the sky are covered by cloud

17
Q

Visibility

A

Distance an object can be recognised measured with a visimeter or by eye

Measured in decametres (units of 10m)
Shown as (-) when unavailable
18
Q

Pressure

A

Mean sea level pressure measured in Pa

19
Q

Give basic observations of large data set (international)

A

Warmer near equator. Seasons opposite in Perth

20
Q

Basic observations for UK

A

Colder further north
Wetter coastal than inland
Wettest in spring
Hottest in summer

A-Level Maths (6 decks)

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