Review Unit 1 Lesson 2-3-4:
Name_____________Per. ____
Read the paragraphs below and fill in the blanks with the words that make the most
sense. You will find the word that matches best in each of the word groups below.
1a
2
4
variable
scientific
control
biological
senses
controls
solutions
solvents
theories
experiments
properties
none of the
above
conclusion
data
experiment
problem
variable
factor
hypothesis
conclusion
data
hypotheses
structures
expressions
1b
3
6
meeting
consideration
laboratory
conclusion
solvent
control
deduction
theory
7
5
1a
1. The
_________________ method is a process that scientists use to help them test new ideas. The first
step in this process usually involves defining the 1 b ____________________ .
2. The next step involves gathering information and making observations of natural phenomena. A way in
which this can be done is by using one or more of the five 2 ______________________ .
3. After initial observations have been made, the following step usually involves the scientist making an
3 _____________________ . This is a possible explanation of how or why the
educated guess or a
phenomena that have been observed occur.
4. Following this, an investigation may be carried out to determine the plausibility of the explanation. This is
usually done through performing one or more activities that are collectively known as
____________________________
.
4
5
5. Observations are made and recorded. These recorded observations are known as _____________________ .
6
6. After the observations have been made and recorded, the scientist then forms a _____________________ and
in the process notes whether the observations made and the results recorded support or refute the hypothesis.
7. In future, other scientists may retest this hypothesis and if it turns out that after numerous retests, the
7
hypothesis remains supported by experimental data, it may become known as a _____________________.
8. The scientific method is a process for experimentation that is used to explore observations and answer questions. What is the
second step in completing the scientific method?
_____
_____
_____
_____
A.
B.
C.
D.
Project experimentation
Hypothesis
Problem
Research
9. The first step to the scientific method is to state the "problem", the scientific question to be solved. What is one requirement
that needs to be fulfilled in order for the "problem" to be valid?
_____
_____
_____
A. It needs to be a problem that has a number answer.
B. It needs to be a problem that can be solved experimentally.
C. It needs to be a problem that has a yes or no answer.
10. What are the five steps of the scientific method in order from first to last?
_____ A. problem, research, hypothesis, project experimentation, conclusion
_____ B. problem, research, project experimentation, conclusion, hypothesis
_____ C. research, problem, project experimentation, hypothesis, conclusion
11. Which of the following are the requirements when creating a hypothesis for an experiment? Check 3 that apply.
_____ A. A hypothesis is based on knowledge and research
_____ B. A hypothesis is an idea about the solution to a problem.
_____ C. A hypothesis is created after an experiment is completed.
_____ D. A hypothesis should make a claim about how two factors are related.
12. When completing an experiment, you are testing your hypothesis. What are the three kinds of variables that you need to
identify in your experiments?
_____ A. independent, controlled, and dependent
_____ B. independent, dependent, and identical
13. What is the independent variable?
_____ A. the variable that you purposely manipulate
_____ B. the variable that is being observed
_____ C. the variable that is not changed
14. What is the controlled variable?
_____ A. the variable that you purposely manipulate
_____ B. the variable that is being observed
_____ C. the variable that is not changed
15. How many independent variables can you have during an experiment?
_____ A. 1
_____ B. 2
_____ C. as many as you like
_____ D. the same amount as the number of controlled variables.
16. How many controls can you have in an experiment?
_____ A. 0
____ B. 1
_____ C. 2
_____ D. as many as you would like
17. In the conclusion of an experiment, can you leave out experimental results that do no support your hypothesis?
_____ A. No
_____ B. Yes
Write the letter of the correct match next to each problem.
1.
2.
information gathered by observation or experimentation
a. data
the factor that changes as a result of manipulation of one or more
b. dependent variable
independent variables
c. independent
3.
an organized procedure to study something under controlled conditions
variable
4.
a process of obtaining information through the senses
d. hypothesis
5.
a testable idea or explanation
e. observation
6.
the factor that is deliberately manipulated
f. experiment
Choose the best fitting answer:
7. Data tables record observations and measurements. On a data table with two columns: The left set of data is
the____________________________________.
A. Independent variable
B. Dependent variable.
8. A graph has 3 different titles; On the X-axis (going horizontal) is which variable?________________________
A. Independent variable
B. Dependent variable
Tor F:
9. __________
Units of measurement should be listed in column headings instead of each cell.
10. __________
A non-linear graph is a graph that is not in a straight line, in a direct relationship non-linear
graph the sloping line would be curved upward.




11. In box A draw an example of a scatter plot graph.
o 12. Part 2: Describe what the “line of best fit” is for
________________________________________________________________________
13. In box B draw an example of a linear graph.
14. In box C draw an example of a bar graph.
15. In box D draw an example of pie graph.
Drawing boxes for question 11,13-15:
C.
B.
A.
Multiple Choices: If there is more than one answer choose all that apply.
16. What are types of data:
A) Facts
b)figures
c) evidence
D) all of the above
Fill in the blanks:
17. A bar graph is used to __________________data.
18. Some graphs do not show data in a straight line. If the line is a curved line it is a
________ _____________ graph.
Short response:
19. Why are tools used to collect evidence?
20. Why would you use a bar graph?
21. Why would you use a pie graph?
22. What is the difference between a line graph and a scatter plot graph?
D.
From Looking at the
Data Table: Answer
the following
questions:
23. What is the Independent Variable?___________________________________________________
24. What is the dependent Variable?_____________________________________________________
25. What would your x axis title be?_____________________________________________________
26. What would your y axis title be?_____________________________________________________
25. What type of graph would be best to show this data?_____________________________________
Q: 26
Directions:
Use this piece of graph paper to graph the information from the Data Table. Be sure to add a title for the
entire graph and for each axis.
Axis Title:
Graph Title:
0 .5
1
Axis Title:
2
3
4
5
6
7
8
9
10