What are the three types of scientific investigations?
Observational, comparative, and experimental.
Identify the independent and dependent variables:
A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly.
The number of paper clips (IV) and the distance the plane flew (DV).
What type of investigation involves collecting qualitative and quantitative data to draw conclusions about a natural or man-made system?
Observational.
Scientists based their explanations of natural events on (evidence / opinions).
Evidence
Nancy performs an experiment for her science class and has her friend Steve perform the same experiment. Why would she do this?
A. Because it will get her a better grade
B. Because she wants to see if her results were correct
C. Because she knows she did it correctly but wants to see if Steve can follow directions
B. because she wants to see if her results were correct.
In a scientific investigation, conclusions are drawn directly after _____.
A. the hypothesis is revised
B. results have been communicated to other scientists
C. data have been interpreted
D. the hypothesis has been stated
What is data have been interpreted
Conclusion for an experiment are only valid if
a.the experiment was controlled (fair test)
c.the conclusion are based all on all available evidence
b.the conclusion are based on evidence
d.all of the above.
What is all of the above.
Nancy performs an experiment for her science class and has her friend Steve perform the same experiment. Why would she do this?
A. Because it will get her a better grade
B. Because she wants to see if her results were correct
C. Because she knows she did it correctly but wants to see if Steve can follow directions
.
B. because she wants to see if her results were correct.
You asked all your classmates what their favorite food is. The answers are as follows: Pizza ---------14 Hamburgers ---6 Sushi ---------27 Pop Tarts -----25 Broccoli -------24 Which of the following graphs would best represent this data?
a. Line graph
b.Pie graph
c.Scatter plot
d.Bar graph
What is Bar graph