Which statement best describes a controlled experiment?
(1) It eliminates the need for dependent variables.
(2) It shows the effect of a dependent variable on an independent variable.
(3) It avoids the use of variables.
(4) It tests the effect of a single independent variable
What is (4)?
100
The variable that scientists are changing in an experiment
What is the independent variable?
100
The factor that is used to compare results with the independent variable.
What is the control
100
The interval between each box or line on a graph.
What is the scale?
200
The number of steps to convert mL to L (give the number of steps and direction)
What is 3 to the right?
200
The part of the experiment that we are measuring in the data section of the lab
What is the dependent variable?
200
These are factors that are kept the same throughout the entire experiment.
What are constants?
200
The part of the experiment that gives you the supplies you need for an experiment.
What is the materials?
300
The base units of measurement in science ( all three of them)
What are meter, liter, and gram?
300
The analysis of data gathered during a particular experiment is necessary in order to
(1) formulate a hypothesis for that experiment
(2) develop a research plan for the experiment
(3) design a control for the experiment
(4) draw a valid conclusion for that experiment
What is (4)
300
Given the following question, "How does water effect tomato growth?", what is the dependent variable.
What is the growth?
300
Given the following question, "How does water effect tomato growth?", what is the control.
What is no water or normal water?
300
The part of the experiment where you form a prediction that is being tested.
What is the hypothesis?
400
Convert 6.57 L to mL
What is 6570 mL ?
400
A biologist in a laboratory reports a new discovery based on experimental results. If the experimental results are valid, biologists in other laboratories should be able to
(1) repeat the same experiment with a different variable and obtain the same results
(2) perform the same experiment and obtain different results
(3) repeat the same experiment and obtain the same results
(4) perform the same experiment under different experimental conditions and obtain the same results
What is (3) ?
400
Given the following question, "How does the amount of sleep effect your height?", what is the independent and dependent variable.
What is sleep and height?
400
Given the following question, "How does age effect athletic ability of students?", what are two constants?
What are students and healthiness?
400
The type of data we collect with tools like beakers, rulers, and electronic balances
What is quantitative data?
500
Tools that are necessary to help you measure the mass of a liquid (Hint: Two parts)
What are a graduated cylinder and a scale?
500
A student formulated a hypothesis that cotton will grow larger balls if magnesium is added to the soil. The student has two experimental fields of cotton, one with magnesium and one without. Which data should be collected to support this hypothesis?
a. height of the cotton plants in both fields
b. diameter of the cotton balls in both fields
c. length of the growing season in both fields
d. color of the cotton balls in both fields
What is (2)
500
Given the following question, "How does age effect athletic ability of students?", what is the independent variable.
What is age of students?
500
Given the following question, "How does the amount of sleep effect your height?", what is the control and what are two constants?
What is no sleep for the control and the people we use and the age of the people are constants?
500
The series of steps that all scientists use to carry out experiments in order to gain reliable data