# Fieldwork quiz

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• Created by: Aman
• Created on: 12-05-15 11:09

## 1. Which one of the following describes stratified sampling?

• Data divided into characteristics of choice i.e. Every blue flower
• Data with consistent increments i.e. every 10 metres
• All data has the same possibility of being chosen
1 of 20

## 2. What is the formula for Identifying the Hydraulic Radius/HR?

• HR = Cross Sectional Area/Wetted Perimeter
• HR = Wetted Area X Cross Sectional Area X 3.147/Pi
• HR = Cross sectional Area X Wetted perimeter
• HR = Wetted Perimeter/Cross Sectional Area

## 3. What secondary data was sought out during the fieldwork?

• Geographical textbooks; to identify theory behind the results of the fieldwork
• Previous fieldwork data; to plot scattergraphs to show impact of river over time
• Google maps; to show visual images of sections of the river that we didn't look at
• Webpages; to identify whether any chemicals were present in the river

## 4. What conclusion can be drawn if the 90% confidence level is not greater than the spearmans rank value?

• All of the above
• The initial hypothesis can be accepted
• A null hypothesis must be accepted
• The results are of greater confidence than 90%

## 5. Which one of these is not a true aspect of the Bradshaw model?

• Gradient decreases as you go downstream
• Channel width decreases as you go downstream
• Velocity and discharge increase as you go downstream
• Particle size decreases as you go downstream