Written experiment on composition of air

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Science and biology concepts

science: is an organized method of using evidence for events in the natural world.The relation between science and biology is that biology studies the living beings and science studies nature.
Branches of science
life science:the work with living things.
earth and space science:examine the characteristics of earth(water,land and air).
physical science:studiesmotion,forces,matter,energy
Scientific method
making observations:gather information by using your senses.
asking questions;things that can be studied through observation,knowledge or research.
designing an experiment:the experiment decides in controlled,independent and dependent variable.
independent variable:is when it changes during the experiment.
dependent variable:the variable that is observed to find out if it also changes.
control group:it is used for comparing,it shows what would have happened if nothing were to change.
Collecting and analyzing data:there are two ways to organize data,one is data table and the second is a bar graphs.
Drawing conclusion: it is a statement that uses evidence from an experiment to the indicate if the hypothesis is supported.
Comunicativa the result:helps other scientists to repeat the experiment and confirm results.
Scientific theories:it is an explanation for a broad range of observations that is supported by a body of scientific evidence.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

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