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Smiley chapter one
Science
| Question | Answer |
|---|---|
| What is the goal of science | Investigate, understand, and explain events in the natural world and make useful predictions using that knowledge |
| Observation | Gathering information about a task or processes in an orderly way uses 5 senses |
| Data | What you gather from observations |
| Quantitative data | Numerical info |
| Qualitative data | Haveing to do with the quality |
| Hypothesis must be _______ | Testable |
| Hypothesis is a proposed explanation for a set of _______ | Observations |
| What is science continually doing ? | Changing (through technology, through scientists rethinking hypothesis) |
| 2 ways a hypothesis can be ruled out | More observations, through experimentation |
| Six steps of an experimentation | 1. Observation 2. Asking a question 3. Forming a hypothesis 4. Experiment 5. Record data 6. Conclusion |
| Step one : asking a question ... What type of question should be asked | Question with a problem to be solved |
| Independant variable | Manipulated variable , deliberately changed |
| Dependent variable | Changes in response to independent variable |
| How should you make a conclusion about the experiment | Evaluate hypothesis, and the recorded results |
| An investigation should be ___________ | Repeatable |
| Theory | An attempt to explain something, not considered absolute truth |
| Biology | The study of life |
| Bios | Life |
| Logy | The study of |
| 8 characteristics of all living things | 1. Made of cells 2. Use energy 3. Homeostasis 4. Made up with genetic code 5. Reproduction 6. Growth and development 7. Response to environment 8. Evolution |
| Unicellular | Single celled |
| Multicellular | Many cells |
| Sexual reproduction | Offspring produced by egg and sperm |
| Asexual reproduction | Organism created from one organism, exact copy ex: plant |
| Metabolism | Chemical reactions through which one builds up and breaks down materials |
| Stimulus | Signal to which an organism responds (internal and external) |
| Homeostasis | Process by which organisms keep internal conditions constant (shiver, sweat ) |
| Metric system | Based on 10, used by most scientists |
| Light microscope | Magnified images focusing beams of electrons |
| Light compound microscope | Light passes through two lenses, study dead and small living organisms |
| Electron microscope | Magnified images by focusing beams of electrons, organism must be dead s |
| Transmission | In an electron microscope, can beam through an object |
| Cell cultures | Single cell put onto dish , cell reproduces, this allows for cell interactions to be tested |
| Cell fractionation | Seperate cell parts, add liquid to tube |
Created by:
Ashleigh_rye5321
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