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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

Who made the word God?

The word "God" originated from Old English and Germanic languages, with its roots tracing back to a Proto-Indo-European word meaning "to call" or "to invoke." The concept of a supreme being or deity has been part of human cultures and religions throughout history, and variations of the word exist in different languages and belief systems.

How are Munros made?

Munros are mountains in Scotland that are at least 3,000 feet (914.4 meters) high and have a prominence of at least 150 meters (492.1 feet). They were named after Sir Hugh Munro, who first compiled a list of these mountains in 1891. Munros are not "made" but rather identified and classified based on their height and prominence.

Why does the pull of gravity keeps the moon in orbit around earth rather than pulling the moon into earth?

The moon is in a constant state of freefall toward Earth due to Earth's gravity, but its forward motion also keeps it in orbit. This balance between the moon's forward velocity and the pull of Earth's gravity creates a stable orbit. If the moon's forward velocity were to decrease or the pull of Earth's gravity were to increase significantly, the moon could be pulled towards Earth.

Where was the volia made?

The viola, a string instrument similar to the violin, was developed in Italy in the 16th century. It was created to fill the middle range of sound between the higher-pitched violin and the lower-pitched cello.

What should you pack when your going to Neptune?

If you were traveling to Neptune, you would need to bring a space suit to protect you from the extreme cold, lack of breathable air, and high-pressure environment. You would also need essential supplies like food and water, as well as communication devices and scientific equipment for research purposes. Additionally, you may also need to bring solar-powered equipment to harness energy from the distant sun.

What is the gymnosprems reproductive structures called?

"Gymnosperm" is an informal term for any plant of the extant groups Coniferophyta, (conifers) Cycadophyta, (cycads) Ginkgophyta (1 species gingko biloba), and Gnetophyta as opposed to the angiosperms or flowering plants. Gymnosperms reproduce by means of seeds. Unfertilised seeds are called "ovules" With the first cell division it is called a "zygote" and thereafter an "embryo". The male gene carrier is called pollen. (For more about pollen - ask. The seeds of gymnosperms are in direct contact with the environment (can be covered with a scale as in "cones"). The ovules of angiosperms, by contrast, are encased in an ovary.

Why are skyscrapers usually made of glass?

Skyscrapers are often made of glass because it allows natural light to pass through, reducing the need for artificial lighting and saving energy. Glass also provides excellent views for both occupants and visitors, creating a sense of openness and connection to the surrounding environment. Additionally, advancements in glass technology have made it stronger, more durable, and better at insulating against heat and cold.

Do dogs have cleaner mouths then cats?

A cat's mouth is cleaner.

The average cat mouth has about 16-18 different types of bacteria, while the dog mouth has over 60 different types.

They tend to have less because they open their mouths less often, thus not attracting so many microorganisms from the outside world, while the dog is constantly panting and breathing heavily through their mouths.

Another reason because of this is that dogs tend to lick and bite things more than cats, whether it's exploring a new object or person that came into the house, drinking toilet water, or eating dirty socks. Cats, on the other hand, sniff and paw things when they want to play and only occasionally bite.

A cat's mouth is also cleaner because of their eating habits.

What tools are used to observe objects?

Tools such as telescopes, microscopes, binoculars, and cameras are commonly used to observe objects. Telescopes are especially useful for observing distant objects in space, while microscopes are used to observe very small objects. Binoculars are helpful for observing objects at a closer range, and cameras can capture images for further study or analysis.

What color do you see when you close your eyes while in a dark room?

When you close your eyes in a dark room, you may see a dark color like black. This is due to the absence of light entering your eyes, which is interpreted by your brain as darkness. Some people may also experience visual phenomena like vague shapes or colors, known as phosphenes, which are caused by the stimulation of the visual system.

Can scorpins jump?

yes then can jump as when they sting they jump to make the sting connect :)

Why people interested in space exploration?

People are interested in space exploration because it offers opportunities to unlock new discoveries about the universe, advance scientific knowledge, inspire future generations, and potentially lead to technological advancements that benefit life on Earth. Additionally, exploring space allows humans to push the boundaries of what is possible and to satisfy our innate curiosity about the unknown.

What did Professor Errol Morris investigate?

Part detective, part philosopher, part poet, part iconoclast, Errol Morris is one of the most important and influential non-fiction filmmakers of his generation. Like such documentary masters as [http://www.answers.com/topic/jean-rouch Jean Rouch] and [http://www.answers.com/topic/wiseman-frederick Frederick Wiseman], Morris delves into vexing philosophical issues of death, identity, and society. But, unlike many other non-fiction filmmakers, Morris challenges the very presumptions of the "documentary" by incorporating multiple points of view and giving his works a stylistic polish usually reserved for mainstream fiction films. His movies have largely achieved great critical success, and he has received a Guggenheim fellowship and a MacArthur Foundation "genius" grant.

Born in 1948 in Hewlett, Long Island, to a Juilliard graduate and a doctor, Morris was well on his way to getting a Ph.D. in philosophy at the University of California at Berkeley until his obsession with movies overwhelmed him. He landed a job programming shows at the Pacific Film Archive, where he watched three or four films a day. Intrigued by a headline in the San Francisco Chronicle that read "450 Dead Pets Going to Napa Valley," Morris scraped together money from his family and his fellow graduate students to make [http://www.answers.com/topic/gates-of-heaven-1 Gates of Heaven] (1978), a brilliantly nuanced portrait of a bankrupt pet cemetery, edged with humor, pathos, and irony. Not merely a work about dead dogs, the film is a meditation on the human experience that never condescends and never fails to entertain. The film met with great critical acclaim and a strong cult following; Roger Ebert exuberantly declared it one of the ten best films ever made. The film also prompted German director [http://www.answers.com/topic/werner-herzog Werner Herzog] to eat his shoe after losing a bet with Morris that the film would never get made.

He followed the success of his debut with the wonderfully bizarre [http://www.answers.com/topic/vernon-florida-film-1 Vernon, Florida] (1980). Originally titled Nub City, the film was to have been an exposé of residents of a sleepy swamp town who dismember themselves for insurance money. A number of death threats soon convinced Morris to rethink the film, and he instead recorded several of the town's more eccentric citizens: one believes that her collection of radioactive sand is growing, while another extols the virtues of turkey hunting. As with [http://www.answers.com/topic/gates-of-heaven-1 Gates of Heaven] and his later works, Morris focused on people lost in their own eccentric worlds and managed to convey their sense of wonder about their obsessions, be they turkey hunting or astrophysics.

In the years immediately following [http://www.answers.com/topic/vernon-florida-film-1 Vernon, Florida], Morris' funding dried up. Through family connections, he briefly got a job as a private detective, working primarily for the Wall Street set. This experience would later prove invaluable for his masterpiece, [http://www.answers.com/topic/the-thin-blue-line-documentary The Thin Blue Line] (1988). Dubbed by critics "a murder mystery that actually solved a murder," the film was directly responsible for saving the life and gaining the release of Randall Adams, a man wrongly sentenced to death for killing a police officer. (Adams' gratitude did not last long after his release, however, as he soon sued Morris for a share of the film's profits.) The film was also a landmark of documentary cinema. Instead of envisioning a non-fiction film as an objective, authentic document of reality, [http://www.answers.com/topic/the-thin-blue-line-documentary The Thin Blue Line] self-consciously questioned the limits of documentary film in both style and content. The movie featured lush cinematography, slick re-enactments, and a score by noted experimental composer [http://www.answers.com/topic/philip-glass Philip Glass], all of which heightened its artificial quality. Blue Line never directly asserts that one testimony is more correct than another. Instead, the film's lack of narration and multiple points of view raise the specter, like [http://www.answers.com/topic/akira-kurosawa Akira Kurosawa]'s [http://www.answers.com/topic/rashomon Rashomon](1950), of the impossibility of objective truth. The film garnered international acclaim and was also relatively commercially successful for a documentary, a genre that rarely achieves box-office success. Though the film failed to get an Oscar nomination (an extremely controversial snub), it was voted best documentary of the year by the New York Film Critics Circle and received a Golden Horse, the Chinese equivalent of an Oscar, for best foreign picture. It has since been widely recognized as one of the finest and most influential movies of the '80s.

Fresh off this success, Morris stumbled with his first foray into fiction film. [http://www.answers.com/topic/the-dark-wind-1 The Dark Wind] (1991), starring [http://www.answers.com/topic/lou-diamond-phillips Lou Diamond Phillips], was stymied by studio politics and eventually shelved, only to be released on video two years later. In 1992, Morris regrouped to adapt Stephen Hawking's best-selling book on cosmology, [http://www.answers.com/topic/a-brief-history-of-time-film-1 A Brief History of Time]. The result was pure Morris. The film is less interested in Hawking's groundbreaking theories on the origin of the universe than in his connection and disconnection to the outside world; his interior world is dominated by theories about black holes and entropy while his body slowly atrophies from Amyotrophic Lateral Sclerosis (Lou Gehrig's Disease). The film received nearly universal critical acclaim and was awarded the Grand Jury Prize at the Sundance Film Festival, even if it was -- again -- ignored by the Academy.

For his next feature, Morris further experimented with the documentary form in the unusual Fast, Cheap, and Out of Control (1997). The film links seemingly unrelated stories of a quartet of obsessed individuals: a lion trainer, a topiary gardener who carves animal shapes out of hedges, an MIT scientist who designs robots, and an expert on blind mole rats. Just as [http://www.answers.com/topic/the-thin-blue-line-documentary The Thin Blue Line] let the audience draw its own conclusions as to who really killed the policeman, [http://www.answers.com/topic/out-of-control-film Out of Control]'s editing and structure, which deftly juxtapose one interview with another, allow the viewer to make connections among the four narratives. As in [http://www.answers.com/topic/gates-of-heaven-1 Gates of Heaven], the film's seemingly mundane stories soon devolve into a compelling and profound exploration of human evolution and humans' need to control their environment.

In 1999, Morris released his most provocative work since [http://www.answers.com/topic/the-thin-blue-line-documentary The Thin Blue Line], Mr. Death: The Rise and Fall of Fred A. Leuchter. Originally titled The Accidental Nazi, the film focuses on Leuchter, an electric chair designer and Holocaust revisionist. Instead of making a straightforward depiction of bigotry and hatred, Morris provides a much more harrowing exploration of the sources of evil. Though he is no ideologue, Leuchter is so enamored of his own expertise that he asserts the Holocaust never happened based on the evidence of his own flawed research. Leuchter is both a concrete example of Hannah Arendt's truism on the banality of evil and the dark side of Morris' obsessed characters. Though Mr. Death was the talk of both the 1999 Sundance and Toronto Film Festivals and opened to widespread critical acclaim, it went mostly ignored by year-end awards groups, including the forever Morris-averse Academy Awards documentary committee.

Shifting his focus to television in 2000, Morris created the weekly, hourlong documentary series [http://www.answers.com/topic/first-person-1960-tv-series-1 First Person]. Though smaller in scope than his theatrical-release films, the show allowed the director to explore subjects both minor and monumental, from a pilot who miraculously landed a troubled passenger plane to a philosophizing bodybuilder. By allowing his subjects to tell their stories directly to the camera without the intrusion of other points of view, Morris perfected an even more intimate process of documentary filmmaking.

Such a process proved to be a perfect fit for the subject of his next film, 2003's The Fog of War: Eleven Lessons From the Life of Robert S. McNamara. Focusing exclusively on the life and times of the controversial former Secretary of Defense under President Kennedy, Morris subjected his at first reluctant subject to over 20 hours of interviews. Combining this material with artfully compiled images from McNamara's life, the director culled a portrait of a brilliant statistician who became one of the most influential men in Washington -- a man whom many blame, at least partially, for the Unites States' involvement in Vietnam. After a strong Cannes premiere, [http://www.answers.com/topic/the-fog-of-war-1 The Fog of War] collected numerous year-end prizes from critics' groups, and even a Best Documentary Oscar for its heretofore snubbed director -- who took no small pride in chiding the Academy for taking so long to award him.

What is used to reproduce fern and moss?

Ferns reproduce through spores, which are tiny structures produced on the underside of fern fronds. Mosses reproduce through spores as well, which are typically produced in capsules at the tip of the moss plant.

Why do astronomers depend on technology?

Back in the older times astronomers didn't have our current instruments, but as time went on technology advanced and made it easier for astronomers to do what they do. But to answer your question astronomers depend on Technology because they want accurate observations and plus like i said earlier it is easier to use technology.

Where does the straw come from?

Straws are typically made from plastic, paper, or bamboo. Plastic straws are derived from polymers such as polypropylene, while paper straws are made from biodegradable materials like recycled paper. Bamboo straws are crafted from natural bamboo stalks.

When do solstices occur each year?

The Solstices occur each year when the Sun reaches its northernmost apparent position, and again when it reaches the southernmost apparent position. These occur at midwinter and midsummer. This year, (2011), 21 June and 22 December.

Who discovered the first iceberg?

The first iceberg was likely discovered by Indigenous peoples living in Arctic regions thousands of years ago. The exact individual or group who first identified an iceberg is unknown due to the long history of human interaction with icebergs in polar regions.

What is the air pressure at Miami beach?

The atmospheric pressure everywhere on earth at sea level (even at Miami beach) has been determined to be 14.7 pounds per square inch. That means that every square inch of space has 14.7 pounds of pressure in a vertical column of air pressing down on it.

Which directions are included on the compass rose?

The main directions included on a compass rose are north, south, east, and west. Depending on the design, it may also include intermediate directions like northeast, southeast, southwest, and northwest.

Is heating the air in a hot-air balloon cause the to rise a theory or a law?

The law is called Law of Buoyancy, matter with less density tries to raise above the matter with high density.

When air is heated, the volume increases and density decreases. Since the air around the ballon is at a lower temperature and the density is higher, the air in the baloon tries to move up thus lifting the baloon.

What did hydrothermal vents do during Earths first years?

In the earlier of Earth's years; the Hadean from memory; there was no water and hence no hydro- anything. This was the first 700 million years or so. (Between 4.5 and 3.8 billion years ago.)

But some very old banded iron deposits come from this early, indicating that these were precipitated by changing chemical conditions.

Another few hundred million years later, the blue-green algae appeared, and having invented photosynthesis with its attendant release of oxygen, created the large banded iron deposits. And some soft-bodied fossils, such as the Ediacaran.

How can light be used to communicate?

You can use Morse code. The Navy uses Signal Lamps, which are lamps that produce concentrated, focused pulses of light. But you could just use a flashlight, depending on what you were communicating and the the circumstances of your predicament.

How is nh3 made?

Ammonia (NH3) is typically produced through the Haber-Bosch process, which involves reacting nitrogen gas (N2) with hydrogen gas (H2) over a metal catalyst at high pressure and temperature. The reaction forms ammonia, which can then be collected and purified for various industrial purposes.

What will they do to allow Parvana to walk freely around the market?

In order to allow Parvana to walk freely around the market, they will dress her in a burqa, which covers her body from head to toe and hides her identity as a girl. This disguise will enable her to move about the market without drawing attention to herself or risking punishment for being a girl in public.