Fieldwork - Geography CIE IGCSE

What is this?

Starting with the left hand bank, looking upstream, measure the width of the actual channel of the river where the water is flowing.

• Measuring the width of the river

• Measuring the depth of the river

• Measuring the wetted perimeter of the river

• Measuring the surface speed of the river

What is this?

Starting with the left hand bank, looking upstream, use a metre ruler to measure the depth of the river at appropriate intervals across the width.

• Measuring the width of the river

• Measuring the depth of the river

• Measuring the wetted perimeter of the river

• Measuring the surface speed of the river

What is this?

Place the tape measure along the bottom of the river (as far as possible push it around the stones and pebbles as this is where the river has to flow). Where the river is deep, use your feet to hold the tape measure down.

• Measuring the width of the river

• Measuring the depth of the river

• Measuring the wetted perimeter of the river

• Measuring the surface speed of the river

What is this?

Measure a 5m stretch of the river with the tape measure. Ensure it is clear of obstacles. Drop a dog biscuit and time how long it takes to travel the 5m. Repeat 3 times and then calculate average speed using speed = distance/time

• Measuring the width of the river

• Measuring the depth of the river

• Measuring the wetted perimeter of the river

• Measuring the surface speed of the river

What is this?

Place a flowmeter just below the surface of the water, and time how long it takes for the propeller to travel along the device. Repeat 3 times and then calculate average speed using speed = distance/time

• Measuring the width of the river

• Measuring the depth of the river

• Measuring the wetted perimeter of the river

• Measuring the surface speed of the river

What must you remember to do when you are measuring surface speed of a river?

• Look upstream

• Stand to the side so that you don't block the flow

• Wait until the river is flooded

• Use a pair of callipers

How should you collect stones to measure the bedload of a river?

• Randomly at regular intervals

• Systematically at random intervals

• Stratified

• Systematically at regular intervals

• Randomly at random intervals

What is this?

• Power's scale of roundness

• Calliper

• Field guide

• Clinometer

Where do you measure the length of a rock or stone?

• Long axis

• Short axis

• In the middle

• It doesn't matter

What is this?

• Calliper

• Clinometer

• Anemometer

• Screwdriver