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Science & Technology Ch.1.

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Presentation on theme: "Science & Technology Ch.1."— Presentation transcript:

1 Science & Technology Ch.1

2 What is Science? Begins with questions or curiosity
Involves methods/knowledge Qualitative: descriptive Quantitative: numerical

3 Branches of Science Natural Science Social Science Physical Earth
Biology Social Science Psychology Sociology Etc.

4 Physical Science 2 parts:
Physics - study of matter, energy, forces, motion Chemistry - composition, structure, properties of matter

5 Earth Science Includes geology, astronomy, etc.

6 Biology Study of living things Includes Zoology, Botany, Ecology, etc.

7 Physical Science Big Ideas
Matter & Change Force & Motion Energy Space & Time Constantly change due to new discoveries and theories.

8 Technology Applied science - using knowledge Works with science
Discoveries/advances in one lead to advances in other Ex: computer Consistently changing

9 Technology Examples Not just computers and phones
Exs: chalkboard, plastics, glass

10 Theory Is a well tested explanation of observation or experiment
Never proved, but facts support them Exs: Kinetic theory, atomic theory, theory of evolution

11 Law Is a statement that summarizes a pattern in nature
DOES NOT explain why (like theory) Exs: Newton’s Laws, Law of Gravity, Gas Laws

12 Scientific Models Is a representation of an object or event
Used for things hard to observe directly (airplane, atom, cell) Can be mental, physical, graphic, simulation, drawing, analogy, or mathematical

13 Scientific Method It all starts with a question/curiosity
Something you want to better understand or a problem you want to solve

14 Steps Observe Ask Question Hypothesis Test (experiment)
Analyze data (conclusions) Revise, repeat, resolve

15 Observation Information you receive through your senses (i.e. smell, touch, etc.) Usually leads to the question you want answered

16 Hypothesis Proposed answer to question
Usually research subject before making hypothesis Has to be testable

17 Experiments Use exp. to test hypotheses
Variable - anything that can change during exp.

18 Variables Dependent variable - the variable that causes a change in another (usually done by you) Ex: Time Independent variable - the variable that changes because of manipulation (usually related to what you’re wanting to know) Ex: Growth Use these to make controlled experiment

19 Conclusions Did you support or go against hypothesis?
Support - test again and could lead to theory Reject - revise exp. and test again

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