A summary of what you have learned from a scientific experiment is called a(n)
conclusion
100
Using one or more of your senses to gather information is called
observing
100
During an experiment, which factors must be controlled so that researchers can draw a logical conclusion from the experiment?
variables
100
In a scientific experiment, the responding variable can also be called the
dependent variable
100
A statement that describes what scientists expect to happen every time under a particular set of conditions is a
a. law
b. theory
scientific law (example: Newton's Laws of Motion)
200
In science, a hypothesis must be
testable
200
Explaining or interpreting the things you observe based on reasoning from what you already know is called
inferring
200
During an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the
manipulated/independent variable
200
The factor that may change in response to the manipulated variable is called the
responding/dependent variable
200
A scientific ____________________ is a well-tested explanation for a wide range of observations or experimental results
a. theory
b. law
theory
300
Which of the following are NOT examples of data?
a. theories
b. qualitative observations
c. quantitative observations
d. measurements
theories
300
Observations that deal with descriptions that cannot be expressed in numbers are called
qualitative
300
Identify the independent variable in this experiment:
A study was done to find out if different tire treads affect the braking distance of a car
tire tread
300
Identify the dependent variable in this experiment:
You are observing if the boiling time of water is affected by volume of water
boiling time
300
Stella thinks that if people are exposed to ultraviolet light then they are more likely to get skin cancer. Stella designs an experiment where sample A consisted of people were exposed to ultraviolet light and sample B was not.
Which sample of people is in the control group?
Sample B
400
One useful tool that may help a scientist interpret data by revealing unexpected patterns is a
graph
400
Observations that deal with a number or amount are called
quantitative
400
Identify the dependent variable in this experiment:
The time it takes to run a mile depends on the person’s running speed.
time it takes to run a mile
400
Identify the independent variable in this experiment:
You are observing if the boiling time of water is affected by volume of water
volume of water
400
Stella thinks that if people are exposed to ultraviolet light then they are more likely to get skin cancer. Stella designs an experiment where sample A consisted of people were exposed to ultraviolet light and sample B was not.
What are the independent variable and dependent variable in this experiment?
IV: Ultraviolet light
DV: Skin cancer
500
A possible explanation for a set of observations or answer to a scientific question is called a(n)
hypothesis
500
An organized way to collect and record scientific observations is with a(n)
data table
500
What is the dependent variable in this experiment?
You are observing 5 crickets to see how many times they chirp (per minute) based on external temperatures of 15, 20, and 25 degrees Celsius
number of chirps
500
What is the independent variable in this experiment?
You are observing 5 crickets to see how many times they chirp (per minute) based on external temperatures of 15, 20, and 25 degrees Celsius
temperature
500
A line graph shows
how the responding variable changes in response to the manipulated variable.