Category: Regional Specifics

What are the advantages of strip mining?

On a production basis, comparing fatalities per million tons, strip mines are over four times safer than underground mines; and on an exposure basis, comparing fatalities per million man hours, strip mines are approximately twice as safe. This disparity in numbers is due to the higher productivity of the strip mine.4 дек. 1971 What is

What are ocean currents 7?

Ocean currents are streams of water flowing constantly on the ocean’s surface in definite directions. They are caused by differences in the temperature and salinity of water, by wind, solar heating and gravity. The winds majorly responsible for creating ocean currents are the Westerlies and the Trade winds. What are ocean currents Grade 7? Answer:

When did Kostal Cone last erupt?

1550 (?) Kostal Cone Geology Age of rock Holocene Mountain type Cinder cone Last eruption 1550 (?) When did the last cinder cone volcano erupt? Cinder Cone and the Fantastic Lava Beds Cinder Cone Geology Mountain type Extinct Cinder cone Volcanic arc Cascade Volcanic Arc Last eruption 1666 How often does a cinder cone volcano

Where are the most earthquakes?

the Pacific Oceanaround the edges of the Pacific Ocean, an area known as the ‘Ring of Fire’; this where the Pacific plate is being subducted beneath the surrounding plates. The Ring of Fire is the most seismically and volcanically active zone in the world. In which 3 areas are earthquakes most common? The world’s 5

How do earthquakes work?

The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth’s crust and cause the shaking that we feel. What are the 3 main causes of

How sedimentary rocks are formed animation?

What is sediment deposition? Deposition is the laying down of sediment carried by wind, flowing water, the sea or ice. Sediment can be transported as pebbles, sand and mud, or as salts dissolved in water. What is an example of deposition of sediment? Depositional landforms are the visible evidence of processes that have deposited sediments

1 44 45 46 47 48 448