A natural occurring inorganic solid that has an orderly crystalline structure and a definite chemical composition is a mineral.
Answer:
Explosive and effusive eruption types resulting from the activity of magma composition, temperature, water content and volatile content.
Explanation:
Magma Silica content composition being above 60% will result in violent eruption. High temperature will result in low viscosity and low temperature in high viscosity. Explosive eruptions are propelled by magma and motivated by gaseous activity. Effusive is characterized with lava outflow without explosive activity. Examples of this effusive eruptions are those of the Hawaiian eruptions. Plinian eruptions are known to be explosive, violent and dangerous.
Answer:
Some geologic processes happen quickly, while others happen over millions of years.
Explanation:
uniformitarianism and catastrophism are geological terminologies which are used to describe events.
Catastrophism is a term used in geology to explain the theory that the Earth is shaped by sudden occurrences which takes place from time to time,these events don't last long.
Uniformitarianism is a terminology used in geology to explain that the Earth is shaped by gradually occuring events or activities which takes place over time, Uniformitarianism can also be described as GRADUALISM.
There is really nothing to know. All you have to use is context clues and common sense. We know some synonyms for direct are manage and handle. Indirect means not direct, right? And we can't handle or manage earth's interior (core), right? Therefore, the study of earth's interior is an example of indirect observation because we cannot directly manage it.
