Presentation on theme: "What is Science SCIENCE: Is using evidence to learn about the natural world The Goal of Science 1.) Deals only with the natural world 2.) To collect and."— Presentation transcript:
1 What is ScienceSCIENCE: Is using evidence to learn about the natural worldThe Goal of Science1.) Deals only with the natural world2.) To collect and organize data3.) Propose explanations that can be tested
2 What is Biology? Biology (bio = life and –ology = The study of) Biology = The study of life!
3 Scientific Method“One of the best ways to begin science is to examine how scientist try to solve problems or answer questions”
5 Observing & Asking Questions Science ALWAYS begins by observing and asking questionsExample: Do plants with more light grow better than plants with less light?Other Possible Questions?
6 HypothesizingHypothesis- is a statement that both explains your observations and data and must be testableCreate an “if-then” PredictionIF the plants receive more light THEN they will grow larger.
7 Experimenting Most experiments are controlled experiments Parts to a controlled experimentControlled group (standard or normal)Experimental groupIndependent variable (one factor you change)Control Variable (factors we keep the same)Dependent variable (depends on the independent Variable)
8 Control GroupControl Group: The normal or the group that we compare our experimental group to. (example: The normal plant that is by the normal amount of light)
9 Control Variables Variable that do not change in an experiment ExamplesSoilPotsPlantsAmount of Water
10 Independent Variable The Variable you change The amount of light the plants receivePlaced on the X axis on a graph
11 Dependent VariableThe Variable that is measured (Depends on the independent Variable)The height of the plantsPlaced on the Y axis on a graph
12 Collecting Data Longest phase of a scientific investigation. Data includes any and all information that scientist gather in trying to answer their question.All data must be measureable (metric system used in science)
13 What is DATA Two types of data 1.) Quantitative data = NUMBERS 2.) Qualitative data = DESCRIPTIVE WORDS
14 Drawing ConclusionsAnalyzing your data so that you can determine if your hypothesis was correct or incorrect.Forming a theory. A theory is NOT a “wild guess” it is NOT a hypothesis, but rather a statement of what is thought to be true.A theory is supported by evidence.
15 What They FoundPlants with more light grew better than plants with less lightPlants in ClosetPlants near windowPlants outside
16 Try ThisBart believes that mice exposed to radiowaves will become extra strong (maybe he's been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice near a radio for 5 hours. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the radiowaved mice were able to push the block away. 7 out of 10 of the other mice were able to do the same.Identify the-11. Control Group12. Independent Variable13. Dependent Variable14. What should Bart's conclusion be?