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What is the definition of science?
The systematic study of natural events and conditions.
What is a scientific theory?
A scientific theory is an explanation supported by a large amount of evidence.
What do bar graphs show?
Bar graphs display and compare data in a number of separate categories.
What is measurement and why do scientists use the standard units of measurement?
Measurement is a description that includes a number and a unit.
Scientists use the SI units as an international language. (It will be possible for scientists from all around the world to understand).
A scientific model shows the structure of an object, system, or concept.
What is empirical evidence?
All data that people gather and test to support and evaluate scientific explanations.
A scientific theory describes how something happens and a scientific law describes what happens.
What is the difference between a linear and non linear relationship?
In a linear graph, a straight line shows the rate of change of the dependent variable.
In a non linear graph, the relationship between variables cannot be shown with a straight line.
What are some of the SI units?
Meters, mass, kilograms, kelvin, newton
What is a scientific simulation?
A simulation uses model to imitate the function,behavior,or process of whatever the models represent.
What are the four steps for a scientific evaluation?
1 - Look at all of the empirical evidence
2 - Consider if explanation is logical
3 - Think of other tests you could do to support your ideas
4 - Evaluate the explanation
What are types of a scientific model? Explain each one.
Physical model, and scientific model.
A physical model can be drawn or built and shows the structure of an object.
A mathematical model can predict results of changes in a system.
Convert 300,000,000 m/s into scientific notation.
300,000,000 m/s
3x108
What are types of models, and how are they used?
Mathematical models, physical models, conceptual models.
Life size models - Useful for studying objects that are difficult to find.
Mathematical models - Able to process variables quickly using complex mathematical equations.
What is pseudoscience?
Pseudoscience is a belief or practice based on incorrectly applied scientific methods.
What are the differences between fieldwork and lab work?
Field work can be collected in the objects original setting, and lab work allows a scientist to control the objects surroundings.
What is a direct relationship in a graph?
What is accuracy and precision?
Accuracy is how close a measurement is to a true value of quantity being measured.
Precision is the exactness of a measurement.
What is a conceptual model?
What are the steps for a scientific method?
1 - Defining a problem
2 - Forming a hypothesis and making predictions
3 - Planning an investigation
4 - Identifying variables
5 - Collecting and organizing data
6 - Interpreting data and analyzing information
7 - Drawing and defending
Can pseudoscience later be classified as science?
Yes, if new evidence is gathered and supports the claim or theory.
What is an inverse relationship in a graph?
As the value of one variable increases, the other variable decreases.
What is the use of technology in the science world?
Technology leads to scientific discoveries which lead to the development of new technologies.
What are advantages and disadvantages of simulations?
Advantages: Can test hypothesis by changing certain conditions, cheaper.
Disadvantages : They have limitations and may not be able to take certain data or ideas into account.