Lava flows are the least hazardous of all processes in volcanic eruptions. How far a lava flow travels depends on the flows temperature, silica content, extrusion rate, and slope of the land. A cold lava flow will not travel far and neither will one that has a high silica content. Such a flow would have a high viscosity<span> (a high resistance to flow). A basalt flow like those in Hawai'i have low silica contents and low viscosities so they can flow long distances. Such a flow can move as far away as 4 km from its source and have a thickness of 10 m (Bryant, 1991). These flows can move at rates of several kilometers per hour (Scott, 1989). </span><span>More silica-rich flows can move as far away as 1.3 km from their sources and have thicknesses of 100 m (Bryant, 1991). These flows can move at rates of a few to hundreds of meters per hour (Scott, 1989). If a lava flow is channelized or travels underground in a lava tube then the distance it travels is greatly extended.</span>
Answer:
They are classified by altitude and the patterns they form.
Explanation:
Clouds are classified by their altitude in the troposphere. Some clouds are found beyond the troposphere. The classification as surface level, low, middle, high and multi-level. The multi-level are massive storms clouds, known as cumulonimbus that rise from the low altitudes to the top of the troposphere. A surface cloud can be classified as fog or mist. The low level can have stratus clouds. The middle level can contain nimbostratus and the high level can contain cirrus clouds. The names are given based on their altitude but the way in which their form.
Answer:
The Tropic of Cancer borders the regions of <em>Mexico, the Bahamas, Egypt, Saudi Arabia, India and Southern China </em>while the Tropic of Capricorn borders the regions of <em>Australia, Chile, Southern Brazil and Northern South Africa.</em>
Explanation:
In order to learn more about the answer, let's consider describing what the Tropic of Cancer is and what the Tropic of Capricorn is.
Tropic of Cancer- This is also known as "Northern Tropic." It is said that at the time of its naming, the sun was positioned in the <em>Cancer constellation </em>(one of the constellations of the zodiac). It is located at 23.5 degrees north of the equator and runs through the regions mentioned above.
Tropic of Capricorn- This is also known as <em>"Southern Tropic."</em> It is said that at the time of its naming, the sun was positioned in the Capricorn constellation. It lies at 23.5 degrees south of the equator and runs through the regions mentioned above.
<u>Additional Information</u>
<u>Equator- </u>The imaginary line that divides the earth into the Northern and Southern Hemispheres.
The capital of Chile is Santiago. "True."
Answer:What type of economic activity is shipping?
Explanation:
SHIPPING IS A VITAL FACILITATOR OF WORLD TRADE
