When the hypothesis is not supported, scientists must....
gather new information and re-do their hypothesis
15
Which one of the following could be considered a last step of scientific method?
making observations
communicating results
writing a hypothesis
communicating results
5
What is a hypothesis?
educated prediction of a solution that is testable
15
What is the first step of any scientific investigation?
Identifying the problem
10
The independent variable most closely relates to which: the cause or the effect?
cause
10
Which experimental group does NOT change?
control
15
What is the format of a correctly written hypothesis?
If..., then....
10
After you design and do your experiment, what should your next step be?
analyze the results
15
What should a scientist do if their hypothesis is supported by the data?
Re-do the experiment
10
Explain the dependent variable
the variable that changes in response to what the scientist changed (where the data comes from)
20
How many variables can be changed for the experiment to be considered valid?
1
10
What is the information that you gather in an experiment called?
data
5
Arrows that hit all over the target are:
precise and accurate
precise but not accurate
accurate but not precise
neither precise nor accurate
neither precise nor accurate
20
Arrows that hit all the same spot on a target but not near the center are
precise and accurate
precise but not accurate
accurate but not precise
neither precise nor accurate
precise but not accurate
15
Name one way you can improve a scientific investigation
Do it again, larger sample size
10
What is the difference between observation and inference
observation is based on 5 senses, inferences are an assumption based on the observations
