Weather Investigation

Question 1

Relative humidity

Answer 1

Wet/dry bulb thermometer (hygrometer)
Humidity is amount moisture /w v in air
Hygrometer has 2 thermometers-one records air temp and other kept damp so records temp as if air was 100% saturated- diff between temps determines relative humidity of air (read from a table)

Question 2

Wind direction

Answer 2

Wind vane
Compass points used to give wind direction. And measured in direction wind coming
Placed on top of buildings so fully exposed to wind

Question 3

Wind speed

Answer 3

Anemometer
Wind forces cups to rotate(connected to meter)
Meter converts rotations into wind speed -km/h

Question 4

Cloud cover

Answer 4

Eye- estimate cloud cover by looking up at Sky

Judge how many eights are covered

Question 5

How to measure Environmental quality survey investigation

Answer 5

Noise pollution
Air pollution
Water pollution
Visual pollution

Question 6

Use of environmental quality surveys

Answer 6

To identify probs or damage in environment with aim to make it better

Question 7

To compare diff areas quickly and easily

Answer 7

Increase total no of points

Question 8

Describe and explain the following when recording investigations

Answer 8

How layout of recording sheet aids analysis of data collected
Reason behind location of each instrument measuring characteristic
Reason why type of sampling adopted provides reliable data eg random, stratified, systematic

Question 9

Data presentation advantages

Answer 9

Shows spatial distribution e. Dot map
Shows variations between regions and countries e.g. Chloropleth map
Visually interesting (colours)
Very bold and clear
Easy to understand
Clearly shows trends and anomalies

Question 10

Disadvantages of data presentation

Answer 10

Can disguise intra- region or intra -country variations e.g cloropleth map
Some are hard to see trends and anomalies
Some are very complicated to read
Symbols take up too much room

Question 11

Types of graphs used

Answer 11

Histogram-like bar graph,but just 1 type of data (e.g how many brothers and sisters people have)
Scatter graph - show relationship between 2 variable pieces of data
Isoline maps- show weather data like temperature,wind speed,pressure
triangular graphs-show 3 related pieces of data =100% primary, secondary, tertiary data or young dependents,old dependants, economically active

Question 12

Other graphs used

Answer 12

Radial (kite) graphs-good for showing related data that can all be scored out of same score (%gcse students who chose geography , Latin, chemistry, maths and French
Wind rose graphs-good for showing wind speed and wind direction
Kite diagrams-good for showing transacts e.g. How vegetation change from coast through a sand dune

Question 13

Other graphs

Answer 13

Flow (system) diagrams- show positive negative multiplier effect ie one factor that causes another factor, show more complicated relationships like the hydrological cycle
Desire lines- straight line shows trip between 2 locations, not necessarily actual route followed, one line for each journey

Question 14

Temperature

Answer 14

Max/min thermometer for diurnal range

Mixture Mercury and alcohol