Unit 4 - Restless Planet - Danger Zones Flashcards
(8 cards)
What is a fumarole?
A vent or opening in Earth’s crust which emits steam and gases.
What is a geyser?
A spring of water that shoots into the air every so often; it is heated by hot rock below ground, and the pressure builds up.
What are the benefits to plate movements?
Good soil.
Money from tourism.
Geothermal Energy - Water that is pumped down into hot rocks to provide heat homes or drive turbine to make electricity.
Valuable materials are found.
Fossil fuels.
Give two economic reasons as to why people continue to live in danger zones.
Well paid job; it’s expensive to move; you might not find a new job elsewhere; you own fertile farmland in a volcanic area; you have cheap energy (Iceland).
Give two social reasons as to why people continue to live in danger zones.
Hard to leave life and friends you know; hard to leave a comfortable lifestyle; people usually don’t think disasters will happen to them reassured by advances in monitoring warning systems, construction and by educational campaign about how to respond in emergencies and so on.
Japan has more than 1500 earthquakes a year.
Why does it have so many earthquakes?
Has so many earthquakes because it is located on a destructive plate boundary where several plates meet, including the Pacific plate and the Philippine plate.
What is geothermal energy?
Generated from heat stored in rock. Water is pumped down into the hot rocks, and it comes back up as steam. This used to heat homes or drive turbines to make electricity.
Why is geothermal energy so widely available in Iceland?
Iceland is situated on the Mid - Atlantic Ridge, which is a constructive plate margin, so plates are moving apart. Melted rock (magma) rises to plug the gap, bringing heat from the Earth’s mantle.
