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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
What are two layers are part of the last layer of the atmosphere?
Thermosphere - extends from 80 km above the Earth
Mesosphere - extends from 50 - 80 km above the Earth
Stratosphere - extends from 15 - 50 above the Earth
Troposphere - closest to the Earth
When an ice cream melts its state of matter change form a?
solid to a liquid........................................ :)
What stop the air going into space?
The Earth's gravity is what prevents the atmosphere from escaping into space. Gravity pulls gases in the atmosphere towards the Earth's surface, keeping the majority of the air close to our planet. Additionally, effects like the Earth's magnetic field also play a role in protecting the atmosphere from solar wind erosion.
Is there a contradiction between science and religion?
Religion staes what it knows as the truth and sifts facts to confirm its position (discarding contradictory evidence). Science observes the real world and attempts to find the explanation by testing theories that eventually may explain the observations - there are no right or wrong choices on data validity.
What is the word use to describe 'The entire physical universe'?
The term "cosmos" is often used to describe the entire physical universe, including all matter and energy.
What is an example of activity space?
An example of an activity space is a public park where people engage in various activities such as picnicking, jogging, playing sports, and walking their dogs. This space provides opportunities for social interaction, relaxation, and physical exercise for individuals within the community.
How can days be short and cold on one hemisphere and long and hot in another?
This happens due to the tilt of the Earth's axis as it orbits the sun. When one hemisphere is tilted away from the sun, it receives less direct sunlight, resulting in shorter days and colder temperatures. At the same time, the other hemisphere is tilted towards the sun, receiving more direct sunlight, leading to longer days and hotter temperatures.
How is science related to planets?
Science is related to planets through the fields of astronomy and planetary science. Scientists use the scientific method to study planets, collecting data through observations and experiments to better understand their composition, behavior, and characteristics. By applying scientific principles, researchers can uncover the mysteries of planets and expand our knowledge of the universe.
What does vied for space mean?
"Vied for space" refers to competition or conflict over physical or metaphorical space. It implies a struggle for control, ownership, or dominance in a certain area or context.
Where did the material come from that made the big bang?
A natural scenario, that is not yet a scientific theory but is consistent with all current knowledge, explains the origin of our universe:
At first, the universe was pure vacuum ("nothing"). By means of a random quantum fluctuation the universe 'tunnelled" from pure vacuum to what is called a false vacuum, a region of space that contains no matter or radiation but is not quite nothing.
The space inside a bubble of false vacuum is curved, or warped, and a small amount of energy is stored in that curvature. This ostensible violation of energy conservation is allowed by the Heisenberg uncertainty principle for sufficiently small time intervals. The bubble then inflated exponentially and its curvature energy transformed into matter and radiation. Inflation stopped and the more linear big bang expansion commenced.
What was the hypothesis that Czarnowski formed?
Czarnowski's hypothesis was that the ancient Minoans, who inhabited the island of Crete, were an advanced civilization that played a significant role in shaping the cultural development of ancient Greece.
What are cumulus nimbus clouds?
Cumulus nimbus clouds, also known as thunderstorm clouds, are large, dense, towering clouds associated with thunderstorms. They can produce heavy rain, lightning, thunder, and even hail. Cumulonimbus clouds have an anvil-shaped top and are often associated with severe weather.
Stars develop when gravity pulls gas and dust together with enough pressure to ignite nuclear fusion. This process starts in the core of the collapsing cloud, where the temperature and pressure become high enough for nuclear reactions to occur, initiating the star's life cycle.
How is this panspermia hypothesis proved?
The panspermia hypothesis suggests that life may have originated from another planet and spread to Earth through comets or meteorites. While there is evidence to support the idea that microbial life can survive in space, there is currently no direct proof of panspermia. Scientists continue to study the origins of life on Earth and explore the possibility of life existing elsewhere in the universe to further test this hypothesis.
Why are flammable chemicals stored in a metal cupboard?
Flammable chemicals are stored in a metal cupboard to reduce the risk of fire. Metal is non-combustible and helps contain fires if the chemicals ignite. It also provides some level of protection from external heat sources.
Generally evolution by natural selection occurs quite slowly over?
Evolution through natural selection occurs slowly over millions of years. It has been hypothesized that evolution is the result of positive mutations that occur in a community of organisms that help them survive better. Evolution is essentially descent with modification.
Why are the seasons in the order they are?
Seasons follow the same order in the Northern and Southern hemispheres but they are exactly reversed.
Spring, Summer, Autumn, Winter and then the seasons cycle through again.
Spring begins in September in the Southern hemisphere but in March in the Northern hemisphere. The "official" day that each season begins changes slightly from country to country, this is a local decision and varies by a few weeks eg the season starts on the 1st of the appropriate month or the 22nd of the month.
Countries on or near the Equator do not experience a noticeable change of season or length of day compared to night.
The "Macarena" song was created by Los del Río, a Spanish duo, in 1993. It became a hit due to its catchy melody and danceable beat. The song's popularity was further propelled by the accompanying dance that became a global phenomenon in the 1990s.
Germination happens between which two stages?
Germination is when a plant grows from a seed. It occurs between the dormancy stage of a seed and the establishment stage of the seed.
Specsavers was started over 25 years ago by husband and wife team, Doug and Mary Perkins - both Optometrists. The company has now expanded into ten countries globally, including several European countries and as far afield as Australia and NZ.
Who are the richest man from India?
As of 2021, the richest man in India is Mukesh Ambani, who is the chairman and largest shareholder of Reliance Industries, a conglomerate with interests in petrochemicals, refining, oil, and telecommunications. He is followed by Gautam Adani, the founder and chairman of the Adani Group, a diversified conglomerate with interests in ports, logistics, energy, and agribusiness.
Did Krishna really pick up the govardhan mountain?
Yes, according to Hindu mythology, Lord Krishna lifted the Govardhan mountain to protect the villagers of Vrindavan from heavy rains and flooding caused by Indra, the god of rain. It is considered a significant event demonstrating Krishna's divine powers and protection of his devotees.
Why one cannot see through fog?
It is very simple, but is difficuld to describe:)
First: The way we see for example a car is the light (example the sun) hitting the car and reflect back in to your eye.
Second: Fog consists of very small drops of water.
Looking at only one of those drops: when the light is on its way back into our eye it hits the drop witch slightly changes the direction of the light.
If we go back to the fog: All the rays of light (that is on its way from the car to our eye) they will all hit each there own drop of water(the fog). Each ray will then change the direction slightly.
And now it gets tricky: Each ray has ben changed different from one an other. Therefore what we see is just like if you took a picture on the computer and hit the blur button thousands of times (because through the fog the light from the car has been so mixed that we only see it as a grey mass.)
Luise
What is the best stone to absorb heat from air and sun?
Granite is a good option for absorbing heat from the sun due to its high thermal mass. It can retain heat during the day and release it slowly at night. Sandstone is also a good choice for absorbing heat from the air because of its porous nature, allowing it to absorb and retain heat effectively.
