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:
Well, most transportation methods cause carbon dioxide to go into our atmosphere. Using hairspray is also another way. Because of the high levels of Carbon Dioxide in our atmosphere, global warming has risen (if that’s a word :D). Due to global warming ice in Antartica is melting and the Polar bears are in danger (sadly). Now I can’t tell you anymore about this topic because I don’t know anything about it (I haven’t learned anything else yet) I hope this helped, and if you knew this information I’m really sorry....Have a great day!
Explanation:
Answer:
Ocean currents are carry warm and tropical waters all over the world which makes heat go toward polar regions and makes solar radiation
A few major cities located on 38 degrees north latitude:
Niigata, Japan
Seoul, South Korea
Shijiazhuang, China
Taiyuan, China
İzmir, Turkey
Athens, Greece
Palermo, Italy
Lisbon, Portugal
Washington D.C., USA
St. Louis, Missouri, USA
Sacramento, USA
