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What is Science?
Transcript of What is Science?
Experiments are organized procedures used to study something under controlled conditions.
The experiments are usually carried out in a laboratory.
Use Scientific Method!
Observations in the field are different from the observations made in the lab.
Field investigations are observations made about the natural world by obtaining information using the five senses.
Another type of investigation is the creation of models. Models are used to study things that are too small, large or complex to observe directly.
If plants need sunlight to grow, then the plant placed in the sunlight will grow taller than the plant placed in the dark closet.
Quantative data- plant is 110 cm
Qualative data- plant is green, with broad leaves.
the systematic study of natural events and conditions.
Science is a logical, structured way of thinking about the world.
Science is the poetry of reality!
Independent Variable-placed on the x- axis
The variable you change. Days
Dependent variable- placed on the y-axis
Reponds to independent variable
Controls- same plant, same type of soil, same amount of water, same type of pot
A scientific law describes a basic principle of nature that always occurs under certain conditions.
Ask a question
Form a Testable Hypothesis and make predictions.
Experiment- decide what equipment and technology are needed for the investigation.
Identify your variables( independent, dependent and your control)
How do scientist discover things?
Scientist carry out investigations to learn about the natural world - everything from the smallest particles to the largest structures in the universe.
Quantitative- descriptive information that is expressed as a quantity or a number. Example: There are 2 fish in the aquarium.
Qualitative- relates to descriptive information that is not expressed as a number. Example: The fish in the aquarium are red and black.
A well supported explanation about the
Theories change as new evidence
3 Types of Investigations
The goal of descriptive investigation is to describe. It should provide factual, accurate and systematic descriptions of phenomena without attempting to infer causal relationships. It does not answer questions about the how, when, or why a particular phenomenon occurred.
Involve collecting data on different populations/organisms, under different conditions (ex. Times of year, locations), to make a comparison. Has a research question, possible hypothesis, procedures, and conclusion.
involve a process in which a "fair test" is designed and variables are actively manipulated, controlled, and measured in an effort to gather evidence to support or refute a causal relationship.