Boiling water from rock

SLN geography@Iceland 2003 Photo-enquiry 3

All photographs can be used in any teaching and learning context in a school but cannot be used for any other purposes without prior permission of kate.russell@staffordshire.gov.uk

3 How do you explain boiling water coming from the ground?

	3.1 How do you explain this pool of boiling water?
Low - High	3.1 How do you explain this pool of boiling water? - movie version
	3.2 and this
Low - High	3.2 and this – the movie version
	3.3 This is Geysir - an area of geothermal activity which gave its name to a geyser.
	3.4 The water bubbles away.
	3.5 Suddenly a dome begins to rise.
	3.6 Gases expand in the bubbles.
	3.7 A small fountain of boiling water bursts from the dome.
	3.8 and rises anywhere from 5-20m
	3.9 After a few seconds it falls and…
	3.10 This is Strokkur - it will go again in a few minutes.
Low - High	3.11 Here is a bigger blast from Strokkur – the movie version.
	3.12 Geothermal activity happens near a plate margin, the Mid-Atlantic Ridge.
	3.13 Geysir gave its name to geyser but it is not the largest in the world.
	3.14 There are various forms of geothermal activity in Iceland - hot mud included.
	3.15 This is how they occur – superheated mineral rich water.
	3.16 Geothermal water can be used to generate electricity.
	3.17 Enjoy a 45 degrees Celsius swim in the milky blue waste water from the power station.
	3.17 Enjoy a hot bath and relaxation.
	3.18 Relax at the Blue Lagoon, an Arctic experience!????
	3.19 The homes of Reykjavik have geo-thermally heated hot water as well as geo-thermally generated electricity.
	3.20 The waste hot water from power stations and boreholes is used to heat swimming pools in many parts of Iceland.