Finding the Density of Various Objects: Marszalek 2012-2013 6
Finding the Density of Various ObjectsLab Work and Scientific Paper
Marszalek, T
Your Name: ______
Partner’s Name: ______
Due Date: ______
Problem: as a scientist you need to find the density of different objects.
Objective: At the end of the lesson, the student will be able to write a basic scientific paper, conduct a lab properly, calculate the volume, weight, and density of different objects, will be able to collect data and analyze it in the results and draw a conclusion.
Materials Needed:
Finding the Density of Various Objects: Marszalek 2012-2013 6
· Paper clip
· Eraser
· Rock
· Marble
· Graduated cylinder
· Calculators
· Pencil
· Paper
· Triple-beam balance
· Water
· Towels
Finding the Density of Various Objects: Marszalek 2012-2013 6
Procedure:
1. Gather the following materials: paper clip, rock eraser and marble from the teacher.
2. Record your qualitative observation of each object on the data table provided.
3. Place object at a time on the triple-beam balance and record the weight/mass for each object.
4. Fill the graduated cylinder half way with water; record the measurement (initial reading). Then place the object into the graduated cylinder and record the measurement (final reading). Subtract the final reading with the initial reading in order to find the volume of the object. Repeat procedure until you have found the volume for each object. Record you answer on the data table provided.
5. Put everything back where it belongs and if you made a mess, clean it up now.
6. Using the formula for density find the density of each object.
7. Once you have found the density of each object, make a bar graph of the density of each object. Remember to put the title of the lab, label the x-axis and y-axis, and label each object.
8. When you are done with your graph, make sure that your teacher has checked it for accuracy.
9. When your teacher has given you the o.k. proceed to write your scientific paper. The information is located after your “Data Table”.
Data Table:
1. Object: ______
Qualitative Observation: ______
______
Quantitative Observation:
Finding the Density of Various Objects: Marszalek 2012-2013 6
Initial Volume:______
Final Volume:______
Volume:______
Mass:______
Formula of Density:______
Density of Object:______
Finding the Density of Various Objects: Marszalek 2012-2013 6
2. Object: ______
Qualitative Observation: ______
______
Quantitative Observation:
Finding the Density of Various Objects: Marszalek 2012-2013 6
Initial Volume:______
Final Volume:______
Volume:______
Mass:______
Formula of Density:______
Density of Object:______
Finding the Density of Various Objects: Marszalek 2012-2013 6
3. Object: ______
Qualitative Observation: ______
______
Quantitative Observation:
Finding the Density of Various Objects: Marszalek 2012-2013 6
Initial Volume:______
Final Volume:______
Volume:______
Mass:______
Formula of Density:______
Density of Object:______
Finding the Density of Various Objects: Marszalek 2012-2013 6
4. Object: ______
Qualitative Observation: ______
______
Quantitative Observation:
Finding the Density of Various Objects: Marszalek 2012-2013 6
Initial Volume:______
Final Volume:______
Volume:______
Mass:______
Formula of Density:______
Density of Object:______
Finding the Density of Various Objects: Marszalek 2012-2013 6
How to write a Scientific Paper
Cover Page (first page)
· Title of Experiment
· First and Last Name
· Partner’s First and Last Name
· Period
· Due Date
Make sure each section is written in a paragraph format (except for the Materials: that’s a list). The next page and the pages that follow should have the following:
· Introduction
ü What is your question? Example: This paper will answer the following question: “what is your question”. Hint: look at the title and form a question from that.
ü One sentence what the problem is. Hint: look at page 2 of this lab where it says “Problem”
ü One clear sentence that states why you are doing this experiment (objective): Ex: The purpose of this experiment is…
ü One clear sentence that states your hypothesis. Ex: My hypothesis is…(make it general)
ü Write a couple of sentences about “background research” of your experiment. Hint: Why do scientists find the density of objects?
· Materials and Methods
ü Make a list of the materials used
ü Write a paragraph (minimal of 5 sentences) stating the methods used. It must be written in 3rd person informal (no “I” and “we”)
ü Hint: What did you do first, second, third, etc…it must be sequential and if you can’t remember, refer back to the procedures in this lab.
ü Example: In order to calculate the volume of the object, the object was submerging in water in a graduated cylinder.
· Data
ü Rewrite your data clearly (this does not have to be in complete sentence)
ü Include
- Object
- Qualitative Observation
- Quantitative Observation
ü Example of Data:
Object: Paper clip
Qualitative Observation: shiny, tiny, thin, smooth, orderless
Quantitative Observation:
Finding the Density of Various Objects: Marszalek 2012-2013 6
Initial Volume:_60mL
Final Volume:_61mL
Volume:_1 mL
Mass:_1 g
Formula of Density: Density = mass/volume
Density of Object:1g/mL
Finding the Density of Various Objects: Marszalek 2012-2013 6
· Results
ü You are putting your data into a paragraph format. For example: The density of the rock was ____.
· Conclusion
ü State what your hypothesis was.
ü Write a sentence stating whether your hypothesis was rejected or accepted based on your data.
ü Staple your graph at the end of your paper. Remember that your graph should take up more than half of the paper. It should include Title, name of y- and x- axis, name of the objects and numbers.
(MAKE SURE YOU TITLE EACH SECTION)
How to staple your papers: Staple the rough draft on top of your lab paper. When you are ready staple your final draft on top of your rough draft and lab paper.
Scientific Paper Rubric: If this is not present, then paper will not be graded.
Name:______Date:______Period:__
Criteria / Excellent / Good / Fair / Poor / PointsTitle
The title is appropriate: represents lab. / 5
Title is appropriate, unique, and represents lab. / 3
Title is present and appropriate, but not unique / 1
Title is present, but there is no significance to specific lab. / 0
Not present.
Problem/Purpose
Problem states as question, appropriate for lab. Purpose states as sentence. / 5
Problem/purpose is present, and contains proper punctuation and format. / 3
Problem/purpose is present and contains proper punctuation, but not proper format. / 1
Problem/purpose is present, but does not contain proper format or punctuation. / 0
Not present.
Hypothesis
Stated as an if/then statement and relates to problem. / 10
Hypothesis is present, contains proper punctuation and format, and relates to problem. / 5
Hypothesis is present, contains proper punctuation, and relates to problem, but not in proper format. / 3
Hypothesis is present, but no obvious relation to problem. Proper punctuation, but not proper format. / 0
Not present or does not relate to problem.
Materials
All materials present and all exact in description (e.g., “250mL beaker” rather than “beaker”). / 10
All materials present and exact in description. / 5
Missing no more than one material and all exact descriptions. / 3
Missing no more than one material and 90% of the descriptions are exact. / 0
Missing no more than one material but less than 90% of the descriptions are exact, or materials are not present.
Methods
Procedure is sequential and easy to read. Exact, written in a way that would allow others to repeat the experiment. Written format is 3rd person informal. / 20
The procedure is sequential, easy to read and contains proper punctuation and written format. The procedure is exact. / 15
The procedure is sequential and easy to read, but missing some proper punctuation or the format is incorrect. The procedure is exact. / 8
The procedure is not sequential, not easy to read, or missing some proper punctuation, but is exact. / 0
The procedure is not exact, not easy to read, not sequential, or not present.
Data Table
Data are recorded in an appropriate manner, are easy to read and understand, and have proper units, and descriptions. / 15
Data are easy to read, all numbers are entered with units, data table has title, and columns and rows are labeled. / 10
Data table has no title, but is easy to read; all numbers are entered with units; and columns and rows are labeled. / 5
Data table has no title, but is easy to read; no more than 3 numbers are entered without units; and columns and rows are labeled. / 0
Data table has no title, is not easy to read, some numbers are entered with no units, columns and rows are not labeled, or data not present.
Results
Data are recorded in an appropriate manner, and are easy to read and understand. Graph has proper units, titles, and description, and the proper graph has been chosen. / 15
Data are easy to read; graph has title, units, and descriptors; and variables are on the correct axis. Data are clearly represented in clear sentence format. / 10
Data are easy to read; graph has units and descriptors, but no title; and variables are on the correct axis. Data are clearly represented. / 5
Data are easy to read; graph has descriptors, but no units or title; and variables are on the correct axis. Data are clearly represented. / 0
Data are easy to read, graph has
Conclusion
Contains proper punctuation and form, describes experiment and points of error, and restates hypothesis; explains why hypothesis rejected or accepted; discuss possible explanations of the results and suggests margins of error. / 20
Contains proper punctuation and form, describes experiment and points of error, and restates hypothesis; explains why hypothesis rejected or accepted; discuss possible explanations of the results and suggests margins of error. / 12
Contains proper punctuation and form, describes experiment, restates hypothesis; doesn’t explains why hypothesis is rejected or accepted or doesn’t not describe points of errors. / 4
Missing proper punctuation and form, or restate hypothesis but does not suggest a new one if necessary. / 0
Does not restate hypothesis or conclusion is not present.
Overall look:
Cover page is present with appropriate information. Appropriate titles for each section. Sections are written in the proper order. Overall look is neat. / 10
Cover page is missing information. One title is missing for a section. Sections are written out of order. Overall look is neat. / 5
Has a cover page. Titles are present, but sections are out of order. Overall of the paper looks neat. / 3
Has the cover page, but is missing titles, section are out of order. The paper overall looks neat. / 0
There is no cover page, no titles for each section, the paper written out of order.
Lab Behavior
Self Evaluation: Please circle what grade you think you should get during the lab. / 50
I stayed at my station unless to get materials. I threw materials away properly. / 25
Was wondering around, instead of being at my station. / 12
Threw things and was wondering around instead of being at my station / 0
Did not do lab
Total Points
160 / Your Grade