What is changed (on purpose) in an experiment?
Independent Variable
a statement that can be proven or disproven
hypothesis
What is used to test a hypothesis?
Experiment
Why can't a scientific law and a scientific theory turn into each other?
They answer different types of questions.
What is the main characteristic of quantitative data?
Numbers
What is the main characteristic of qualitative data?
Descriptions
Does spinach make dogs grow larger? A scientist gets 6 poodles the same age and treats them the same except every day 3 dogs eat 10 ounces of dog food plus 4 ounces of spinach and 3 dogs eat 10 ounces of dog food. What is the control var?
type of dog, dog food. treated exactly the same except spinach,
An explanation as to why certain laws and fact exist. Answers "why" questions
Scientific Theory
A rule based on facts and proven hypothesis. Answers "what" questions
Scientific Law
Does spinach make dogs grow larger? A scientist gets 6 poodles the same age and treats them the same except every day 3 dogs eat 10 ounces of dog food plus 4 ounces of spinach and 3 dogs eat 10 ounces of dog food. What is the hypothesis?
If dogs each spinach then they will grow larger.
Name the 6 steps of the scientific method.
What stays the same in an experiment?
Control Variable
Does spinach make dogs grow larger? A scientist gets 6 poodles the same age and treats them the same except every day 3 dogs eat 10 ounces of dog food plus 4 ounces of spinach and 3 dogs eat 10 ounces of dog food. What is independent var?
Spinach
Does spinach make dogs grow larger? A scientist gets 6 poodles the same age and treats them the same except 3 dogs eat 10 ounces of dog food plus 4 ounces of spinach and 3 dogs eat 10 ounces of dog food every day. What is control group?
Dogs that are not fed spinach
something a person holds to be true - may not be scientifically proven
belief
What is measured in an experiment?
Dependent variable
Name one characteristic of a scientific theory.
1. Based on inferences. 2. More generalized. 3. Answers "why" questions
Does spinach make dogs grow larger? A scientist gets 6 poodles the same age and treats them the same except every day 3 dogs eat 10 ounces of dog food plus 4 ounces of spinach and 3 dogs eat 10 ounces of dog food. What is the dependent var?
size of dogs
Scientific Method
A series of step used to test a hypothesis to reach a scientific conclusion
Name the 2 types of data that can be collected in an experiment.
Qualitative & Quantitative data