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VOLCANOES YEAR 7
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VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

Dec 25, 2015

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Andrew Hines
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Page 1: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

VOLCANOES

YEAR 7

Page 2: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

4. VOLCANIC LANDFORMS

1. Landforms from Lava and Ash:– Shield volcanoes (from hot spots)– Cinder cone volcanoes– Composite volcanoes – Lava plateaus (instead mountain)– Caldera (huge hole left after collapsing a

volcanic mountain)– Soils from lava and ash (good for plants)

Page 3: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

SHIELD VOLCANO

Page 4: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

CINDER CONE VOLCANO

Page 5: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

COMPOSITE VOLCANO

Page 6: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

LAVA PLATEAUS

CALDERA

Page 7: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

2. Landforms from Magma:– Volcanic necks (giant tooth stick in the

ground). It forms when magma hardens in a volcano’s pipe.

Page 8: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

– Dike (magma that forces itself across rock layers hardens into this structure)

– Sill (when magma squeezes between horizontal layers of rock)

Page 9: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

–Batholiths (mass of rock formed when a large body of magma cools inside the crust)–Dome Mountains (other smaller bodies of

hardened magma can create dome mountains)

Page 10: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.
Page 11: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

3. Geothermal Activity:– Hot spring forms when groundwater heated by a

nearby body of magma rises to the surface and collects in a natural pool.

– Geyser is a fountain of water and steam that erupts from the ground (when rising hot water and steam become trapped underground in a narrow crack)

Page 12: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.

5. VOLCANOES IN THE SOLAR SYSTEM

• Earth is not the only body in the solar system to show signs of volcanic activity.

• Pictures taken by space probes show evidence of past volcanic activity on Mercury, Venus and Mars (rocky planets)

• On Mars there are large volcanoes and lava flows. The largest mountain in the solar system is the Olympus Mons volcano (25km height).

Page 13: VOLCANOES YEAR 7. 4. VOLCANIC LANDFORMS 1.Landforms from Lava and Ash: – Shield volcanoes (from hot spots) Shield volcanoes – Cinder cone volcanoes Cinder.