Practical Enquiry Flashcards
1
Q
What is a hypothesis?
A
- A statement of something that we might expect based on our existing knowledge which we can test by collecting and analysing fieldwork data.
2
Q
What would you use measure rainfall?
A
- A rain gauge
3
Q
How does a rain gauge measure rainfall?
A
- Measures how much rainfall was collected since the last time it was emptied
4
Q
What could obscure the measurements of a rain gauge?
A
- The sitting of gauge can be obstructed by plants and trees
- Wind can blow it askew
- Large droplets of rain could cause mud to block the gauge
- If placed on concrete, extra water can splash into them.
- Rain gauges should also be checked regularly to avoid evaporation.
5
Q
What do you use to measure temperature?
A
- Maximum-minimum thermometer
6
Q
How does a maximum-minimum thermometer work?
A
- As the mercury rises and a block is pushed along when it rises, when the mercury retreats the block stays - marking the temperature.
7
Q
What is the diurnal temperature range?
A
- Diurnal temperature range = maximum temperature - minimum temperature
8
Q
What factors affect the reading of a maximum-minimum thermometer?
A
- Buildings give off heat
- Altitude
9
Q
What do you use to measure wind speed?
A
- An anemometer
10
Q
How do you use an anometer?
A
- Hold in the air and would measure the reading in knots or km/hr
11
Q
What would affect the reading of an anemometer?
A
- Gusts of wind
- Where you hold it - obscured by buildings or trees
- Height at which you hold it
12
Q
What is a beaufort scale?
A
- A chart used to determine how fast winds are
13
Q
How would you measure humidity?
A
- With a hygrometer
14
Q
How does a hygrometer work?
A
- Read wet and gry buld readigns and subtract two.
- Look at chart to see what the difference is in relative humidity in %
15
Q
What are the limitations of a hygrometer?
A
- Aby calculation errors can affect the reading
