Transcript Scientific Method

Conclusion Questions
1.
Which characteristics of life were found in the living
things?
2.
How can you tell if something is non-living based on the
life characteristics?
3.
What was difficult about this lab?
4.
Remember Marty the Martian? Write a paragraph in
which you explain why Marty thought that a car was a
living thing. Then explain why the car is nonliving using
many specific characteristics of life as reasons.
BELLRINGER
8.27.2013
 1. Give an example of a COMPLETE SENTENCE.
BellRinger 9.5.2013
1.
Describe what an apple looks like.
2.
Observe the following picture and describe it.
3. Observe the following picture and describe it.
BellRinger 9.5.2013
ZOMBIE APOCALYPSE!
1. How could you design
an experiment to test the
best way to avoid zombies?
BellRinger 9.6.2013
1.
III. The Scientific
Method
Scientific Method: steps that scientists use to gather
information and answer questions.
1.
Question/Observation/Problem: noticing
something that nobody has noticed before

2.
“People trip a lot at Central.”
Hypothesis: an explanation for a question or an
educated guess.

“If students walk on our wood floors, then they will
stumble more often than on other surfaces.”
3. Experiment: an investigation that tests a hypothesis by
collecting information under controlled conditions
“Today, I will count how many people stumble on the wood floors each
passing period.”
a. Control: the group in which all conditions are kept
the same
“Tomorrow, I will count again at the same time, but in the basement
where the floors are concrete.”
b. Independent variable: condition that is changed
The surface that students are walking on (the cause).
c. Dependent variable: condition that changes due to
the independent variable.
Whether or not people trip (the effect).
d. Data: information collected from the experiment
Scientific Method Cont.
4.
Conclusion: reporting of experimental data
5.
Theory: a hypothesis supported by a large body of
evidence

“I did the experiment every day for a month and the
results were always similar. I believe the wood floors here
make us TRIP.”
BellRinger 9.6.2013
Me’Shell predicted that vitamin water would
help zombies get stronger. She kept two
zombies; one got regular water and one got
vitamin water.
1.
What is the control?
Zombie w/regular water
2.
What is the Independent variable?
Vitamin water
3. What is the dependent variable?
Zombie strength
Bellringer 8/25/10
1.
List the steps of the scientific method in order.
2.
Describe the difference between an independent
variable and a dependent variable.
Writing a Lab Report
1.
Title: What is the experiment about
2.
Purpose: WHY is the experiment being performed?
3.
Hypothesis: predict the outcome; educated guess.
4.
Materials: what was used in the experiment
5.
Procedure: “Recipe Style” directions of how to perform
the experiment.
Writing a lab report
(CONT.)
6. Organize Data: report quantitative and qualitative
data
7. Conclusion: brief summary of the data and an
explanation of whether the data supports the
hypothesis.
Bellringer 8/27/10
1.
In the heart rate experiment what data did you
collect?
Heart rate or bmp
2.
In the toothpick tower experiment what data did you
collect?
Height of the tower
3.
Why is data collection important when performing
an experiment
Helps to form a conclusion and show
evidence
IV. Types of Information
1.
Quantitative Data: numerical or measurable data,
usually expressed in graphs or tables
SI Units: universal-measuring units used to report
quantitative data
a. Meters= length
b. Gram= mass or weight
c. Liter= volume
d. Second= time
e. Celsius degree= temperature
2. Qualitative Data: written descriptions of what
scientist observe
Graphing review
1.
Where is the X-axis?
2.
Where is the Y-axis?
3.
What is a line graph?
4.
What is a bar graph?
Bellringer 8/31/09
1.
What is quantitative data?
Numerical data ex. 20 cm
2. What is qualitative data?
Descriptive words ex. Purple, soft
3. Why are SI units used in collecting scientific data
SI units are universally understood around the world
V.Rules of Graphing Scientific Data
1.
Title the graph: Tree species VS height
2.
Label the axis:
•
X-axis is the horizontal axis

•
Contains information related to the independent variable,
example tree species
Y-axis is the vertical axis

Always contains numbers , example tree height
Tree Species VS Height
Height
Tree Species
Rules of Graphing Scientific Data
(CONT).
3.
Number the axis: first look at the data table and round
the largest number to the nearest 10th place

50 m
4.
Count the number of boxes
on the graph paper for that
axis

10 boxes
Data 
Table
Trees
Elm
Maple
Cherry
Box
Elder
height
48 m
35 m
6m
4m
Tree Species VS Height
50
45
40
35
Height
30
25
20
15
10
5
0
Elm
Maple
Cherry
Tree Species
Box Elder
Tree Species VS Height
50
45
40
35
Height
30
25
20
15
10
5
0
Elm
Maple
Cherry
Tree Species
Box Elder
M & M Graphs
1.
Color
2.
Create a data chart like the following
# of plain
# of peanut Total
Create a single bar graph that expresses the # of
plain M & M’s of each color. Use colored pencils to
express each, label axis, and title the graph.
Bellringer 9/1/09
1.
When is graphing useful in science?
For organizing and interpreting
numerical data
2.
Sketch a graph and label the following
a.
X-axis
b.
Y-axis
Y-axis
X-axis
3. Why is it important to label the x and y axis correctly?
So you know what the
graphing showing
M&M graphing
1.
Create a double bar graph depicting plain and total
M&M’s by color.
2.
Create a single line graph depicting peanut M&M’s
by color.
3.
Create a double line graph depicting peanut and
plain M&M’s by color.
Don’t forget to label axis’s, title, include a key (double’s
only).
Bellringer 9/1/09
1.
What would be a
good title for this
graph?
2.
Which class has the
most students?
3. Which class has the
least students?
Interpreting graphs
a) What length of worm
is most common?
_____________
b) What was the longest
worm found?
_____________
Interpreting graphs
c) How many worms
were 6 cm long?
____________
d) How many worms
were 7.25 cm long?
____________
e) The peak of the
curve represents the
[ longest worms /
average worms ]
Assignment


Choose two data tables and graph them.

Label axis

Title the graph
Then write three sentences to interpret the data
shown.

Look for trends

Look for specific information
9/3/09
1.
What are the steps of the scientific method?
2.
What are the steps for writing a lab report?
Bellringer 9/4/09
1.
What is an Isopod?
2.
What does an Isopod eat?
3.
Where does an Isopod live?
4.
Describe the Isopods impact on the Ecosystem?
Bellringer 9/8/09
1.
Numerical or measurable data is an example of
____________data .
a. Quantitative b. Qualitative
2.
The information collected from experiments is called
________.
a.
3.
the conclusion b. The data
A hypothesis supported by a large body of evidence
refers to a(n) ______
a. Experiment b. Theory
Bellringer 9/9/09
1.
Define Biology.
2.
The steps commonly used by scientists to gather
information and test a hypothesis is the ________
a. Research
3.
b. scientific method
Experiments that produce written description contain
_________ data.
a. qualitative
b. quantitative
4. What are SI units?
What to study for the test
 Highlighted words in your notebooks
 Characteristics of Life
 Scientific Method
 Experimenting terms (control, independent)
 Data terms (quantitative, qualitative, SI units)
 How to write a lab report
 Graphing
 Look over Bellringer questions
9/11/08
1.
How do pill bugs breathe?
a. Lungsb. Gills
2.
c. Trachea
In a lab report the ______ answers the question, Why
is the experiment being preformed
a. Purpose/problem
b. conclusion
3. What was the independent variable in your pill bug lab
yesterday?
Writing a Lab Report
1.
Title: what is the experiment about
2.
Purpose: Answers the question, WHY is the experiment
being performed
3.
Hypothesis: predict the outcome; educated guess
4.
Materials: what things were used in the experiment
5.
Procedure: “Recipe Style” directions of how to perform
the experiment