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Scientific Method
The scientific method is the basis of scientific investigation. A scientist will pose a question and formulate a hypothesis as a potential explanation or answer to the question. The hypothesis will be tested through a series of experiments. The results of the experiments will either prove or disprove the hypothesis. This category should contain questions and answers regarding the scientific method.
4,392 Questions
x3 can mean a lot of things, for example:
In math is can mean: the variable x equals 3.
In BMW sportcars: X3 is a model of car with a meaning often known only to the car company.
On mechanical drawings: x3 can mean times 3
How does water enter a submarine?
Water enters the submarine by entering through the butthole and leaving from the propellers
What is the purpose of using scientific method in psychological experiments?
It is used to avoid common problems that occur in the absence of using the scientific method.
How do effluent treatment plants and water treatment plants work?
A water treatment plant will usually take water from a dammed river. The water is then filtered and purified till it is potable (that is, drinkable). Depending on the quality of the water it may have to be disinfected with chlorine or other chemicals to make it safe for use.
An effluent treatment plant takes sewage runoff from toilets, factories, stormwater drains and other sources.
Screening: First the effluent is screened to remove any solids (cans, plastic, condoms, tampons etc). It then moves through a tank slowly enough so that sand, stones and rock sink to the bottom where they can be removed before the mixture starts going through pumps. (The sand is usually sent to landfill.)
Primary Treatment: The sewage then flows slowly through large tanks. Here the sludge sinks to the bottom and the oil and grease rise to the top. The sludge and the oils are then removed.
Secondary Treatment: The remaining mixture is treated using aerobic biological processes. Air is pumped through to encourage bacteria and protozoas to break down the contaminants.
Tertiary Treatment: Finally the treated water is given a final processing before it is discharged into a river, lake or ocean. Any one or more of the following methods are used:
- filtration (through sands)
- lagooning (stored in large man-made lagoons where reeds and other plants assist)
- constructed wetlands (rather like lagooning, using reedbeds and other similar methods)
- nutrient removal (to remove nitrogen and phosphorus)
- disinfection
Any metal which can get oxidised in the presence of oxygen from the air and water.
How does water enter the submarine?
Water enters the submarine by letting water out not into its ballast tanks it enters from the flagura to the magura.
Using the scientific method Can a lit candle in a sealed glass die by loneliness?
No. It extinguishes from lack of oxygen.
Why do scientists use the scientific method to study environmental problems?
because this method was developed to enable the most accurate and impasionate evaluation of the situation.
What are 5 methods of analysis in chemistry?
- Spectroscopic methods: such as UV-Vis spectroscopy, IR spectroscopy, and NMR spectroscopy, which analyze the interaction of matter with electromagnetic radiation.
- Chromatographic methods: such as gas chromatography and liquid chromatography, which separate and analyze components of a mixture based on their interactions with a stationary phase and a mobile phase.
- Mass spectrometry: a technique that ionizes molecules and separates them based on their mass-to-charge ratio, providing information about the molecular weight and structure of compounds.
- Titration: a method of quantitative chemical analysis used to determine the concentration of an unknown solution by reacting it with a solution of known concentration.
- Electrochemical methods: such as voltammetry and potentiometry, which measure electrical properties of chemical systems to provide information on redox reactions and ion concentrations.
Give 5 examples of inference and observation?
observation:my hands are getting warm
inference:friction or heat is produced while rubbing my hands
observation:we smell the fragrance of the perfume
inference:air molecules travels around the room aa akward
Has the Scientific Revolution ended or is it an ongoing process?
The Revolution itself has ended since it attained the goals of shifting the mentality of the majority of the population towards accepting science, but the ideals of the Scientific Revolution live on in the public embrace and respect for science.
How thin films deposited using solution casting method?
In a nutshell, the process of producing thin films or membranes involves the following steps:
a polymer solution or melt is forced through a die/coating machine onto a backing or inert support, such as a sheet of nylon or even cellulosic paper. The newly deposited film on its backing is then fed, in the form of a continuously driven sheet, through a treatment process specific to the application. Finally, the sheet is packaged for later use, often by rolling it back up.
Here is a longer step by step description of the process:
1) polymer system is prepared. This involves the melting or dissolution of one or more polymers into a solvent system. This step may involve more complicated procedures than simply adding solids to a solvent or heating a solid until it melts. The specifics are ultimately determined by the application, the capacity and equipment available, and the
2) the polymer melt or solution is then fed through a die coating machine onto a backing of some kind. This is by far the most common process, and even when applications do not use a backing/support the film is still cast this way (later processing will peel it away).
other processes exist, such a spin coating, spray coating, etc. but this method is the most widely used in industry for the preparation of thin films or membranes.
This step is typically considered to be the most precise part of the entire process. The polymer must be fed at a constant, consistent, and reliable/accurate pressure, temperature, and flow rate. This must be achieved while depositing approximately 100-200 micrograms of polymer solution (ultimately about 20-40 micrograms of solids after the solvent has been removed) per square milimeter over a width of several feet and a length of many thousands of feet. A small scale operation should produce around 7,000 feet of membrane per day per casting machine, though it can be much much higher.
3) The newly coated polymer sheet is now treated by drawing the sheet through some collection of processes along a series of cylindrical rollers. Drying, heating or cooling, photo irradiation, doping (example: exposure to a dye, a particular chemical, a salt solution, etc.), pH balancing, and rinsing are common examples of treatment stages.
4) the sheet, now treated, is typically rolled back up for later processing.
It should be noted that not all films require the use of backing or support in their application
there are many applications which require that the polymer film be carefully peeled away from the backing at some later processing stage.
As a side note, I will mention the following about this particular method of thin film casting:
Its main historical application, and that which produced the most R&D and understanding of the theory underpinning this field of materials science, was the production of large quantities of Cellulosic (nitrate or acetate) film backing for use in chemical film. Unsurprisingly, Eastman Kodak held many of the patents and trade secrets related to this technology for many years, and they (Eastman Chemical Company) still operate as one of the main suppliers of cellulose acetate used for the production of membranes or films.
What is the series of steps scientists use to answer questions and solve problems?
Ask a question.
Collect information.
Form a hypothesis.
Perform an experiment.
Collect data and analyze data.
Interpret data.
If data support your hypothesis, draw conclusions. If they don't, form a new hypothesis and re-do the process.
Publish your results.
Repeat experiments.
What is radio active material?
Radio active material that occurs naturally where human activities exposure to ionizing radiation are naturally-occurring radioactive materials, or NORM. They include uranium and thorium. Radioactive materials are mainly used in engineering and science departments. This type of material emits gamma rays or particles that as radioactive energy.
What is the use of bracketing in the Phenomenological Method of Hursserl?
I was told it was to differentiate his terms from other phenomologists, and philosophers..
Which keeps things colder plastic wrap or aluminum foil data?
It would definitely have to be plastic wrap because plastic wrap is an insulator, which aluminum is not.
Why is it important to not change your variable in an experiment?
If you change more that one variable in an experiment, then when the result occurs, you won't know which variable caused the change.
How should data be collected and displayed in the scientific method?
The scientific method does not detail how you do an experiment, only the method used in general terms.
How do you use scientific method to solve everyday problems in your lives?
1. How do you use the scientific method in your everyday life?
What is the meaning of 'scientific observation'?
It is after or before
The meaning of scientific is something that is based on or related to the principles of science.
Scientific observation is the central element of the scientific process. It is the core skill of scientist to make these observations. It is also known as scientific method.
