on April 15, 2022
What is form of a mineral?
GeologyThe four main categories of mineral formation are: (1) igneous, or magmatic, in which minerals crystallize from a melt, (2) sedimentary, in which minerals are the result of sedimentation, a process whose raw materials are particles from other rocks that have undergone weathering or erosion, (3) metamorphic, in which … What are 3 ways minerals
on April 15, 2022
How do we know earth’s outer core is liquid?
GeologyBy tracking seismic waves, scientists have learned what makes up the planet’s interior. P-waves slow down at the mantle core boundary, so we know the outer core is less rigid than the mantle. S-waves disappear at the mantle core boundary, so the outer core is liquid. How do we know that Earth’s core is liquid?
on April 15, 2022
What is the difference between constructive and destructive plate boundary?
GeologyThey are called constructive plates because when they move apart, magma rises up in the gap- this forms volcanoes and eventually new crust. One example is the Mid-Atlantic Ridge, where the gap can be found in Thingvellir, Iceland. Destructive plate boundaries are when oceanic and continental plates move together. What is the difference between a
on April 15, 2022
What types of organisms lived during the Archean eon?
GeologyLife in the Archean was limited to simple single-celled organisms (lacking nuclei), called prokaryotes. In addition to the domain Bacteria, microfossils of the domain Archaea have also been identified. What type of organism was most common during the Archean eon? These organisms were prokaryotes, a group of unicellular organisms with rudimentary internal organization that began
on April 15, 2022
What type of boundary exists between the Philippine plate and the Pacific plate?
Geologyconvergentconvergent. The Pacific plate is subducting beneath the Philippine Sea plate to the east while the west/northwestern part of the Philippine Sea plate is subducting beneath the continental Eurasian plate. Which plate boundary is formed between the Philippine plate and the Pacific Plate? It is separated from the Philippine Sea Plate to the west by
on April 15, 2022
Which isotope is used to determine the age of Earth?
GeologyThe best-known radiometric dating method involves the isotope carbon-14, with a half life of 5,730 years. How do we determine the age of the Earth? So, just how old is Earth? By dating the rocks in Earth’s ever-changing crust, as well as the rocks in Earth’s neighbors, such as the moon and visiting meteorites, scientists
on April 15, 2022
Is there earthquakes in Italy?
GeologyHow common are earthquakes in Italy? In the past 1,000 years, there have been about 260 earthquakes of magnitude Mw equal to or greater than 5.5 — on average once every four years. Besides natural plate movements, fracking is also a possible cause of the latest seismic phenomenon in regions like Emilia Romagna. Does Italy
on April 15, 2022
How much is a geodesic dome?
GeologyThe cost varies by the size of the dome and finishings you choose, but you can expect to pay anywhere in the neighborhood of $5000-10,000 for a completed dome with basic finishes. How much do domes cost to build? Average Cost to Build a Dome House Average Cost per square foot $175 per sq. ft.
on April 15, 2022
Which US states have active volcanoes?
GeologyThere are 12 states with active volcanoes. Here’s the list. Alaska: 141. California: 18. Oregon: 17. Washington: 7. Hawaii: 5. Utah: 4. Idaho: 4. New Mexico: 3. Which state in the United States has an active volcano? Alaska is home to 141 active volcanoes, the most of any US state. Other states include California, Oregon,
on April 15, 2022
What two fossils support the theory of Pangaea?
GeologyEvidence. Two fossils in particular served as good evidence for the idea that the continents were once joined but have since separated: Glossopteris and Mesosaurus. What fossil evidence supports the idea of Pangea? One type of evidence that strongly supported the Theory of Continental Drift is the fossil record. Fossils of similar types of plants