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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
Where does water enter a starfish?
Water enters the starfish through the madreporite or the tube feet, but mainly the madreporite.
What relationships among heat movement and density in mantle rock?
As mantle rock is subjected to heat, it becomes less dense and can undergo convection, where hotter, less dense material rises and cooler, denser material sinks. This movement of mantle rock due to differences in density plays a key role in driving plate tectonics and volcanic activity on Earth's surface. Heat helps drive these density-driven movements by changing the physical properties of mantle rock.
Who is Dr Fred Whipple and explain his hypothesis?
Whipple came up with the "dirty snowball" concept of comets; that the head of the comet is primarily ice and frozen gasses bound together by dust, gravel and rocks. This explains the nature of the "tail" of the comet; as the frozen gasses sublimate away (change from solid to gas, without an intervening liquid state) the gas is carried away by the solar wind and by pressure of the sunlight itself.
What is a good science fair project on human psychology?
I did 2 science fair projects. Do boys or girls have better lung capacity? Or how has more accurate sences boys or girls?
What is a detailed explanation of how the visking model is good or bad?
can someone tell me what is good about visking tube and whats bad about it asap because i need to give my homework by tmor and my homework relates 2 that
How are the knockout mice useful in determining the function of genes?
Knock out mice are produced by impairing or deleting a particular gene expression. Thus the gene function (which was deleted) can be tracked by studying this knock out and the control mice. Lets say a gene is suspected to trigger immune response against a pathogen, one can study this by infecting the wild type(normal) and knock out(specific gene deleted) mice and study the role of the gene.
What is the difference between experiment and hypothesis?
An experiment is the thing that you perform, and a hypothesis is the guess you make at the start (before the experiment) to determin what's going to happen.
What is a variable that does not change in an experiment?
The variable that stays the same throughout the entire experiment is called the control.
Who is father of silver revolution?
Dr. Verghese Kurien is known as the "father of the white revolution" in India, which transformed the country from being a milk-deficient nation to the world's largest milk producer. However, there is no specific individual known as the father of the silver revolution.
How do you do the stepping method from kenichi?
It's a little hard to explain without showing you, but here goes:
First, point your toes together with your heels about a foot apart. Next, move your left foot backward so that it is perpendicular (makes a right angle) with your right foot.
When you're using this technique, make sure that when your toes are together, you put each foot around one of you opponents feet.
Define operational definition as distinct from lexical definition?
Operational can be defined as the process of operationalization that is used to define a variable or an object in terms of a process that is needed to determine its quantity, duration, and existence. An operational definition can, when operationalized to a greater degree, besides the procedure needed to bring something into existence.
Which term best describes the phrase something tha happens
What is the difference between an inference and a hypothesis?
A hypothesis is a theory based from observations. Hypotheses generally haven't been tested, they are merely an explanation derived from available observations.
An inference is a conclusion obtained not through observable facts, but rather through observable trends. If such and such process were to continue trending, you would make an inference about the final state of the process. As with hypotheses, inferences have generally not been tested enough to be valid.
In statistics or data management, there are two main types of variables. Each of these types of variables can then be divided into two more types of variables.
1. Categorical variable
A categorical variable is commonly known as a qualitative variable. Every response can be placed into a category. A response may fit into a specific category (mutually exclusive), or it may fit into a category such as "other" along with other responses (exhaustive). Categorical variables are either nominal or ordinal. A nominal variable is a word that describes a category (i.e. horse, dog, cat) and the order does not matter. An ordinal variable uses categories that have to be placed in an order (i.e. very bad, bad, ok, good, very good).
2. Numeric variable
A numeric variable is a variable that is expressed by a real number. It is commonly referred to as a quantitative variable. Numeric variables can either be continuous or discrete. A continuous variable is variable that can assume an infinite number of real values (i.e. 2.345....). These variables are often grouped into class intervals. A discrete variable is a variable with a finite number of real values (i.e. shoe size).
Grade 12 Data Management class
