Shield volcanoes are found on ____ plate margins, where two plates ____ from one another. Shield volcanoes have basic lava, which is non-acidic and very runny. They have gentle sides as the lava flows (____ viscosity) for long distances before it solidifies. There are ____ layers, as the volcano just consists of lava. Eruptions tend to be less violent but they can become deadly is covered in snow. There tends to be ____ periods between eruptions. Icelandic volcanoes are this type. They are also associated with ____ Spots and dominate Hawaii. Lava fields are ____, mostly ____ areas of surface or subaquatic lava flows. Such features are generally composed of highly ____ basalt lava. Will ____ erode down and plant life takes over. Lava ____ are natural conduits(tunnels) through which lava travels ____ the surface of a lava flow. Tubes form by the crusting over of lava channels. A geyser is a rare kind of ____ spring that is under pressure and erupts, sending ____ of water and steam into the air. Geysers are made from a tube-like hole in the Earth's surface that runs deep into the ____. The tube is filled with water. Near the bottom of the tube is ____ rock called ____ which heats the water in the tube.

Divergent Boundaries Landforms

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