1. Greetings from America Old Faithful Geyser Yellowstone National Park

2. Elements of a Geyser Siliceous: made of silica (silica is used to make glass) Sinter: sediment deposited by a mineral spring Extensive: covering a large area Fracturing: breaking Permeable: allows gas or liquids to pass through

3. How many geysers are there in the world? 600 - 700 How many geysers are in Yellowstone National Park? 400 - 500

4. Water is heated by magma; steam rises from the heated water.

5. Pulses of water surge upward.

6. The surface of the pool is broken.

7. Water shoots upward and falls back to Earth.

8. Old Faithful at Night

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