Variables
What is an independent variable?
The variable being changed/manipulated
Definition:
A reasonable conclusion based on previous knowledge and observations
Inference
What is a hypothesis?
an educated guess or testable prediction
Theory or Law? Heat flows from a hotter object to a cooler one.
Law
If you are looking at which shampoo makes people's hair the softest, the shampoo brand is the ___________ variable.
Independent or dependent
What is a dependent variable?
The variable being measured/observed.
_______ is carefully using the five senses to gain information.
What is an Observation?
What do you do when you are analyzing your data?
Find averages, make graphs, etc.
Explains why something happens
Scientific Theory
Number of tomatoes grown on a tomato plant is ____________ data.
Quantitative or qualitative
Quantitative
Variables that you keep the same throughout an experiment.
In Science, ________ is the act of creating an exact copy of an experiment to obtain the same results.
What is Replication?
What is the difference between analyzing results and drawing conclusions?
Analyzing results is finding out what happened. Drawing conclusions is saying why you think it happened.
Describes the what will happen every time under the same conditions with out attempting to explain it
Scientific Law
Color, Texture, and Scent. Quantitative Data or Qualitative Data?
Qualitative Data
What is a control?
A variable that does not get the independent variable.
In Science, ______ is when someone does multiple trials of something to obtain reliable results.
What is Repetition?
What is the scientific method?
An organized set of investigation procedures used by scientists
May be changed if new evidence is found, it is well supported, and is a widely accepted explanation of the way nature works
Scientific Theory
A Scientist posts their experiment and results. Other Scientists perform the same experiment to check the results. Repetition or Replication?
Replication
What is the difference between quantitative and qualitative variables?
Quantitative = numerical variables
Qualitative = letter/quality variables
Using what you know and observe to determine what might happen in the future.
What is a Prediction?
List the steps of the scientific method in order.
hypothesis------publish results-------draw conclusions
----------question-------collect data/experiment-------research-------analyze data
1. Question
2. Research
3. Hypothesis
4. Collect data
5. Analyze data
6. Draw conclusions
7. Publish results
True or False: A theory can become a law if there is enough empirical evidence to support it.
FALSE! A Law tells use WHAT happens and a Theory tells us WHY something happens
Colors in the sky is a ________ variable.
Quantitative vs qualitative.
Qualitative