Examples of Observation

Observation is the process of observing someone or something. In many cases observation is an informal behavior, but it is also formal and involves data collection. The observation can also be the information itself collected

In science, we need to observe using scientific methods to prove or refute hypotheses based on human observations, assumptions, predictions, tests, and conclusions.

All scientists absolutely use observations, but anyone can observe by observation.

The principal watching the teacher gives her classes to judge her validity as an educator in her class.

Astronomers look at the night sky and record data on the movement and brightness of the objects he is seeing.

Please introduce a zoologist to observe the nest after the prey to determine the early degree of animal reaction

You are always involved in observation and you can see many observations in your daily life.

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Observe and observe information gathering when the project occurs. Examples include observation of services provided, training courses, meetings, special events, etc. Observation in an unobtrusive way can provide important information about the actual situation. However, since there are only observers who can influence the observation target, multiple observations may be necessary. The observer observer may be an observer in a strict sense or a person who actually records observations after actually participating in the process. Please select the person who exactly matches the specific plan to be evaluated. External observers can provide more objectivity, but the people involved in the program have the advantage of becoming familiar with programs and their processes.

Observations are qualitative or quantitative. Qualitative observations describe attributes or events in a number independent way. As an example of qualitative observation, outside temperature is low in winter, salt is crystalline solid, sulfur crystal is yellow, penny is dissolved in dilute nitric acid to form a blue solution and brown gas. Quantitative observation is a measurement whose definition consists of numbers and units. Examples of quantitative observations include: crystalline sulfur has a melting point of 115.21 ° C. and 35.9 g of salt (its chemical name is sodium chloride) is dissolved in water at 100 ° C. at 20 ° C. . Regarding the extinction of dinosaurs, the first observation is quantitative: the concentration of radon in the sediment can be traced back to 66 million years ago, which is usually 20-160 times higher.

Understand freezing point degradation by paying attention to the effect of dissolving various substances in water and the temperature necessary for freezing it. Good examples of comparative substances are table salt (sodium chloride), calcium chloride, sugar. Make sure that you can melt each substance of the same quality in water for a fair comparison. Sodium chloride decomposes into two ions in water. Calcium chloride forms three ions in water. Sugar dissolves in water, but it does not decompose into any ions. All of these substances lower the freezing point of water