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Scientists
This category is for questions about the people who apply the scientific method to solve problems, introduce new concepts, and strive to explain the natural world.
9,527 Questions
How do scientists know that some places that had once been under water are now desert?
To be entirely fair to the scientists, it is usually the other way around, e.g. they know that some places that are now deserts used to be underwater. Scientists can determine this based on several different factors.
- Limestone: One of the clearest indicators that an area was historically underwater is layers of limestone. Limestone is formed from the parts of microscopic sea creatures called diatoms and some types of crustaceans that fall to the sea floor and are compacted over millions of years. In order to have significant amounts of limestone, therefore, these regions would need to be submerged for millions of years. Conversely, there are very few animals and microscopic organisms that leave behind the necessary materials to form limestone (never mind enough to compact earlier layers).
- Fossils: There are a number of different fossils of creatures that have been found in the desert and their appearances make it clear that that they would have been unable to live on land. Basilosaurus, the largest meat-eating whale in history, has been discovered in the Sahara Desert. Far more common to find are smaller creatures which are also clearly marine animals, like ammonites.
- Halite: Halite is crystallized salt and generally appear in areas that used to have saltwater that has since evaporated.
- Aquifers: Most deserts have water tables, but aquifers exist in some deserts, indicating amounts that previously seeped beneath the sands as the sea was drying up. Aquifers are only indicators, not substantial proof.
What the name of a scientist who studies mosses?
Botanists are people who study plants. Moss are plants, so Botanists study moss too.
Did Ernest Rutherford have a wife?
Yes. In 1900 Ernest Rutherford married Mary Georgina Newton (1876-1945).
What is a way that scientist does not collect data?
ther are only two different ways that scientist does not collect data
What branches of mathematics help time scientists?
Physics, particularly quantum physics (which is essentially mathematics).
What is a tool scientist use to organize the elements?
The elements are arranged in the increasing order of their atomic number and repeating properties.
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What was Louise Pasteurs contribution to science?
He invented the understanding of microorganisms making food go off. He invented pasteurisation of alcohol (which also helped milk and other foods). His experiment for this was putting a broth in a glass jar and heated the glass so it made a secure lid. It was then heated to kill any microorganisms inside the jar already. He also created lots of vaccines like anti rabies.
Hope I helped,
love Kayleigh, 12 xxxx
Can scientist predict earthquakes?
Earthquake prediction is currently not possible, as such, seismologists will attempt to quantify the risk posed by a particular fault zone rather than state exactly when an earthquake will occur.
For more information, please see the related question.
What equipment is used for animation?
depends, 3d or 2d?
in 3d, the main tools are maya, 3d studio max, blender (free), xsi, z brush, mudbox, renderman, realflow, havok, shave and a haircut, etc.
in 2d there's flash, animo and various other programs.
and then there's good old fashioned pencil test animations. Get a stack of printing paper, a pencil and a camera and start drawing away.
What scientists made a contribution to cell theory?
The word cell was first used by English scientist Robert Hooke in 1665 to describe the cell walls visible in cork when seen through a microscope.
In 1838 the German botanist Matthias Schleiden concluded that all plant tissues were made of cells. In 1839 the zoologist Theodor Schwann reached the same conclusion about animal tissues.
By 1885 the German physiologist concluded that cells only originated by the division of a preexisting cell.
What previous ideas did Louis Pasteur change?
Louis Pasteur made significant contributions in the fields of microbiology and immunology. He disproved the theory of spontaneous generation by conducting experiments that demonstrated the role of microorganisms in fermentation and putrefaction. Pasteur also developed the process of pasteurization to kill harmful bacteria in food and beverages, thus revolutionizing food safety and public health practices.
What equipment is used in microsurgery?
The most important tools used by the microsurgeon are the microscope, microsurgical instruments, and microsuture materials.
What do samuelf.b. Morse Alexander graham bell and gugilemo marconi have in coment?
Morse, Bell, and Marconi invented or popularized a form of long-distance communication between people.
What famous person demonstrates integrity?
Jesus Christ does, but he is more than a person. If by famous you mean known of across many nations.
