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38 Cards in this Set
- Front
- Back
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What is life science
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the study of living things
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Scientific method
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a series of steps followed to solve problems
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Hypothesis
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an expliantion that is based on prior scientific research or observations and that can be tested.
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Contolled Experiment
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An experiment that tests only one factor at a time by using a comparison of a control group with an experimental group.
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Variable
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A factor that changes in a experiment in order to test a hypothesis.
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Model
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a pattern, plan, represenation or description designed to show te structure or workings of an object, system or concept.
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Theory
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An explanation that ties together many hypotheses and observations.
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Law
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A summary of many experimental results and observations, a low tells how things work.
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Technology
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the application or science for practical purposs; the use of tools, machines, materials, and processes to meet human needs.
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Compound light microscope
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an instrument that magnifies small objects so that they can be seen easiley by using 2 or more lenses.
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Area
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A measure of the size of a surface or a region.
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Volume
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a measure of the size of a body or a region in 3-d space
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Mass
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a measure of the amount of matter in an object
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temperature
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a measure of how hot or cold something is.
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Asking a questions helps us ________________. Obsevations lead to _____________________.
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Learn
Understanding |
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Study of plants
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botanist
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Study of marine animals
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Marine biologist
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The study of animal behavior
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zooologist
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3 out of 4 ways life sciene is benifical to living things:
Life science investigates ___________________ and ____________, and tries to find cures. |
Disease and illness
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3 out of 4 ways life sciene is benifical to living things:
Life science creates ______________ to treat illness adn disease. |
ways
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3 out of 4 ways life sciene is benifical to living things:
Life science studies and designs plans for ______________/____________________production |
Drugs/Medicine
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3 out of 4 ways life sciene is benifical to living things:
Life sceince benifits (helps) the _________________________ in many ways as well. |
enviroment.
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7 Steps to sceintific method
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1. identify the problem
2. Gather information 3. State (form) a hypothesis 4. Design and do experiment 5. Record and interpet data 6. Draw a conclusion 7. Communicate result |
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A controlled expereiment must have a ____(Control)_____________ group and an ______(Eperimental)___________ group. It must also test only one factor or ______(Variable)_________________.
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Control
Experimental Variable |
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Why is it important to be able to analyze results in tables and graphs?
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In order to understand/interpret an expereiment, we have to be able to read tables and graphs.
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How does scientific knowledge change?
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Scientific knowledge changes when new data/resutls/evidence is discovered.
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Define the 3 types of models
Physical: |
Look/act like the thing they model
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3 types of models
Mathematical Models |
Made up of numbers, equations, or other forms of data.
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3 types of models
Conceptual Models |
Represents ideas-what we think happened or will happen based on observed behaviors.
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What are the benifits of models?
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Models help us understand how something works or how things are structured. They can teach us or help us make presdictions.
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What are the limitaitons of models
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Models cannot be exactly like the real thing.
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What is a hypothesis
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An idea about something scientists think.
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What is a theory
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is used to explain things because it has been supported by many experiements.
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Scientist use laws to:
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tell what will happen.
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Technology: How can computers be used?
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To create graphs, solve complex equations, and analyze data. Computers can also be used to share dat and publish reports.
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3 tools life scientist use to observe organisim
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Cmputerized axial tomography scan (CATscan)
Magnetic Resonance Imagery (MRI) Compund Light microscope scanning or transmission or electron microscope |
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4 basic units in the SI (international system of units) are:
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Meter
Liter Gram Kelvin. |
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Why are the 4 basic units in the SI important?
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They allow people to share and compare their obsevations and results.
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