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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
Altavista was a popular search engine in the 1990s and early 2000s, known for its advanced search features and large index of web pages. People used Altavista to find information on the internet before the rise of Google and other search engines.
Why is it inaccurate observation is hindrance to scientific inquiry?
Inaccurate observations can lead to false conclusions and misinterpretation of data, hindering the progress of scientific inquiry. To ensure the reliability and validity of scientific research, accurate and precise observations are necessary to form the basis of sound conclusions and theories. Mistakes or biases in observation can distort results and impede the advancement of knowledge in the scientific field.
Why does thunderstroms considered severe?
Thunderstorms are considered severe when they produce strong winds of at least 58 mph, large hail at least 1 inch in diameter, or tornadoes. These severe phenomena can cause damage to property, injure people, and disrupt daily life. Severe thunderstorms are closely monitored and warnings are issued to protect the public from potential hazards.
When did the Skylab explode in space?
Skylab did not explode in space. It was intentionally deorbited and re-entered Earth's atmosphere on July 11, 1979, scattering debris over the Indian Ocean and sparsely populated areas of Western Australia.
How are space and mass related?
Space and mass are related in the sense that mass affects the curvature of space according to Einstein's theory of general relativity. Massive objects create gravitational fields that curve space-time, while the presence of mass also determines the motion of objects within that space. In essence, mass warps the fabric of space-time, influencing the behavior and interactions of objects within it.
What wavelengths can you not see?
Human vision is limited to the visible spectrum of light, which ranges from about 400 to 700 nanometers. Wavelengths shorter than 400 nm (such as ultraviolet light) and longer than 700 nm (such as infrared light) are not visible to the human eye.
What is a sentence with the word river?
The ducks swam up the river.
The River Thames is in England.
There was a river of blood down the street.
What do hot dry air moves into the southwest in summer from?
Hot dry air moves into the southwest in summer from the desert areas to the south and east, such as the Sonoran Desert and the Mojave Desert. This air mass brings high temperatures and low humidity to the region, contributing to the hot and arid conditions characteristic of the area during the summer months.
Primarily spiders, but I would figure anything small enough to carry back to their nests.
How did scientists find out that the solar system was formed?
All inner planets, as well as Mars, Jupiter and Saturn are well known since prehistorical times by direct visual sight.
These planets were subject of observation, and the Sumerians were the first to study these planets as a science (Astronomy), and as a base to predict the future (Astrology).
Jupiter and Saturn's movements were systematically observed by the Babylonianastronomers, from the 7th or 8th century BC.
There is a dispute about who first acknowledged Uranus as a planet, not as a star as previously thought.
Sir William Herschel presented his conclusions to the Royal Society in 1783, but Russian astronomer and mathematician Anders Johan Lexel (born in Sweden) was the first to defend Uranus was a planet, and he also calculated its orbit around the Sun, when Herschel still considered Uranusa comet.
However, Uranus was formally discovered by Herschel, using for the first time an optical telescope to find a new planet.
Neptune was the first planet discovered by mathematical prediction rather than by telescope obervation. Its discovery is also disputed between Le Verrier and Johann Galle...
The dwarf planet Pluto, considered the nineth planet of the Solar System on his own merit until 2006, was discovered only in 1930 by the young astronomer Clyde Tombaugh, died in 1997 at age 90.
It was the first time a planet was discovered using photography. Tombaugh used a new technology to compare photographs from the sky taken at different times, called a «Blink Comparator».
Part of Tombaugh ashes will orbit Pluto, sent inside a small probe orbiter carried aboard the New Horizons spacecraft mission, which will arrive Pluto in 2015).
Although the International Astronomical Union keeps insisting Pluto is not a planet, the scientifical community is not unanimous on this formal decision taken after the discovery of Eris, a Kuiper Belt object larger and heavier than Pluto.
Asteroids and other trans-Neptunian objects are not discussed here.
(But it would be an interesting question to answer!)
How do the stars locations change over time?
All the stars and the Sun are moving through space in different directions and at different speeds. Over long times (to a person) they change their positions in the sky and the constellations change.
Can poinsetta get direct sunlight?
No, poinsettias prefer indirect sunlight. Direct sunlight can cause their leaves to burn and the plant to wilt. Place your poinsettia in a location with bright, indirect light for best results.
What was the main goal for the Apollo mission?
To establish the technology to meet other national interests in space.
To achieve preeminence in space for the United States.
To carry out a program of scientific exploration of the Moon.
To develop man's capability to work in the lunar environment.
What types of satilites are there?
Satellites can be categorized into different types based on their functions:
- Communication satellites: used for telecommunications and broadcasting.
- Earth observation satellites: used for monitoring weather, land use, and environmental changes.
- Navigation satellites: used for global positioning and navigation systems.
- Scientific research satellites: used for space exploration and scientific experiments.
What is the meaning of finite planet?
A finite planet refers to Earth, which has limited resources and capacity to support life. It highlights the importance of sustainable practices to ensure the long-term well-being of the planet and all its inhabitants.
What lens like that of the eye produces an image that is upside down and reversed?
A concave lens, also known as a diverging lens, can produce an image that is upside down and reversed. This type of lens causes light rays to spread out, resulting in an image that is flipped both vertically and horizontally when compared to the original object.
Why do scientists say that Uranus is tipped over?
Scientists say Uranus is tipped over because its axis of rotation is tilted at an angle of about 98 degrees. This extreme tilt causes Uranus to essentially roll on its side as it orbits the Sun, giving it the appearance of "rolling" through space. The reason for this abnormal tilt is still not completely understood.
Which of these artists introduced the idea of scientific observation into Renaissance art?
da vinci!
Apexx! :)
What name is given to the splitting up of white light?
The splitting up of white light into its constituent colors is called dispersion. This occurs when light passes through a medium where its speed changes, causing different colors to refract by different amounts.
Why are computer models useful in studying phenomena in the universe?
Computer models allow scientists to simulate complex systems and processes that are difficult to study directly. They can incorporate a wide range of variables and interactions, helping researchers better understand and predict phenomena in the universe. By running simulations, scientists can test hypotheses, explore different scenarios, and make predictions about how the universe works.
What is the opposite of the geocentric system?
helliocentric - where the sun is the center of the universe.
How does earth's velocity change as it goes around the sun?
Earth's velocity around the Sun changes slightly throughout a given year. This is because Earth's orbit is not a perfect circle, but an ellipse that deviates slightly from a true circle.
When Earth is closest to the Sun, in early January (Jan. 04), its velocity is a bit higher that its average yearly orbital velocity. This point in Earth's orbit is called perihelion.
Six months later, on or about July fourth, Earth is at aphelion, its farthest distance from the Sun for a given year. During this time, Earth's velocity is slower than the yearly average.
Earth's average orbital speed is 107,200 km per hour, or 66,610 miles per hour. When Earth is closer to the Sun, it moves faster; and when farther from the Sun, a little bit slower than the average.
What describes a major role of gravity in star formation?
Gravity plays a key role in star formation by causing dense regions of gas and dust in space to collapse under their own weight. As these regions collapse, the pressure and temperature at the core increase, eventually leading to nuclear fusion and the birth of a new star. Gravity is responsible for bringing together the ingredients needed for star formation and providing the energy required for the star to shine.
