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Astronomy Lab - Lab Notebook and ScalingIn this lab, we will first set up your lab notebook and then practice scaling.Please read this so you know what we will be doing.BEFORE YOU COME TO THIS LAB:Buy a sewn-binding lab notebook.Print this lab write-up. Make sure that it prints with nothing on the backside of each page.Read through this lab write-up so you have a rough idea of what we will be doing.Review your lecture notes and, on a SEPARATE SHEET OF PAPER, calculate the following (show or describe your work):You want to build a scale model of the Sun that is about 100,000,000 mi away, the scale of your model is 1 cmrepresents 1,000,000 mi. How far away would the scaled Sun be?BRING TO THIS LAB:1. Your lab notebook, a print out of this lab write-up, a pen, and a calculator (optional)2. Separate sheet of paper showing the above calculationOBJECTIVES FOR LAB NOTEBOOK portion of this exercise:Bring the correct lab notebook to lab.Set up the basic structure of your lab notebook.Learn and use basic lab procedures.Learn and use basic lab notebook rules.MATERIALS USED IN THIS LABTapeScissorsRulersMeter SticksMOTIVATION FOR A GOOD LAB NOTEBOOK:Science must be open for everyone to read, check and duplicate results.Good lab notebooks allow you or someone else to reproduce theexperiment at a later time. Reproducibility requires you to keep clear,accurate records of your work. Using only your record in the notebook,could you or someone else duplicate the experiment? Next month? Nextyear? The lab notebook displays your results and what you did as you did it.BY THE WAY, YOU MAY USE YOUR LAB NOTEBOOK FOR THE LAB EXAM!PROCEDURE:Continue reading the rest of this but we will do all ofthe following in lab.OUTSIDE FRONT COVER OF LAB NOTEBOOK:Put your name and the words “Astronomy Lab”somewhere legible on the outside front cover of yourlab notebook. I have permanent markers in the lab ifyou want to use them. The outside front cover shouldlook something like the cover on the right with yourname written on it.

Lab Notebook and Scaling Page 2 of 8FIRST RIGHT HAND PAGE OF LAB NOTEBOOK (We will do this in lab.):Use only the right hand pages for now.At the top of the first right hand page, write “TABLE OF CONTENTS” as well as the other titles and numbers so that itlooks like Figure 1 below. Include the numbers shown but do not give this page its own page number. You can cut outthe box below instead of handwriting this information. You will be adding the other remaining labs to this page withtheir starting page numbers for each lab in the future.TABLE OF CONTENTSGeneral Laboratory ProceduresLab Notebook ProceduresSample Layout for Each Lab ExerciseScaling1357No page number for the “Table of Contents” pageFigure 1 –Table of Contents Page

Lab Notebook and Scaling Page 3 of 8SECOND RIGHT HAND PAGE OF LAB NOTEBOOK: (we will do this in lab)Number this page as page 1 in the lower right corner.It should look like Figure 2 below.GENERAL LABORATORY PROCEDURESRead and heed these rules for a SAFE and effective laboratory. No food or drink in the lab. (These must be left outside the laboratory.This is a serious safety issue and violations can result in a substantialfine for the college.)Authorized personnel only are allowed in the lab.Put coats and back packs in the rear of the lab to avoid trippinghazards.Be on time.Plan to stay the full 1 hour and 40 minutes until your work is done.Bring to every lab: Lab notebook, write-up for that day, & pen.Read the write-up at least one day before lab.Prepare your lab notebook as indicated in the write-up.Optional: bring tape, scissors & calculator. All of these are provided inthe lab as well.1Figure 2 – General Laboratory Procedures PageCopy or cut and tape these procedures into your lab notebook.Note: Be sure to READ and FOLLOW the Laboratory Procedures.Number the next several right hand pages in the lower right corner (3, 5, 7, 9 )

Lab Notebook and Scaling Page 4 of 8THIRD RIGHT HAND PAGE OF LAB NOTEBOOK: (we will do this in lab)The THIRD right hand page (page number 3) should look like Figure 3 below.LAB NOTEBOOK PROCEDURESRead and heed these rules for a good and useful lab notebook. Use pen; not pencil.Write directly in the notebook not on scratch paper or on the write-up.Use the right hand page for your work (data, procedures, tables ).Use the left page only to add something later.Do not erase work. To edit your work, simply recopy it. Cross out theold work with a single line.Do not tear out pages from your notebook. Just cross out pages ormaterials you don’t want with a single line.Staple or tape pictures, graphs, and relevant information into yournotebook. No loose paper.Keep a clear, concise log of what you do as you do it. Keep commentsshort and to the point in your own words.Sketch and label equipment used and its set up. There are pictures ofmost equipment used so you can cut them out and put them in your labnotebook.If you have a camera, you can use it and staple or tape the picturesinto your notebook.Organize and label your data. Plan ahead and leave plenty of space.You will not run out of room in your notebook.Include calculations so you know how you did the work. Show yourwork.Pay attention to significant figures. We will learn how to do this duringlab together.Include units with all data.Date each lab exercise.Make sure you understand and can do the objectives listed at thebeginning of each write-up.Do the preparation work: Before you come to this lab Section.List your partners for each lab.Label your procedure for each lab. Show steps of your work.Answer any questions at the end of the lab write-up.3Figure 3 – Lab Notebook Procedures PageCopy or cut and tape these procedures into your lab notebook.Note: Be sure to READ and HEED the Laboratory Notebook Procedures

Lab Notebook and Scaling Page 5 of 8FOURTH RIGHT HAND PAGE OF LAB NOTEBOOK: (we will do this in lab)The fourth right hand page (page number 5) of your notebook contains a sample layout for most lab exercises. Just cutthis out and tape it in your lab notebook as an example but read and follow it for each lab.Sample Layout for Lab Exercise(Include each of these parts for each lab.)DATE (Record today’s date)TITLEOBJECTIVESCopy or cut and tape the objectives from the write-up into your lab notebook.PREPARATIONRecord any prep work here. Usually this is about a paragraph answering questionsposed in the BEFORE YOU COME TO LAB section of each lab write-up. Note thismust be done before you come to lab.PARTNERSRecord your partners’ names. First names are fine.PROCEDUREKeep a clear log in your own words of what you did and the results you obtained.Include drawings to help you clarify. You can cut out the PROCEDURE from thelab write-up and tape it into your notebook. See LAB NOTEBOOKPROCEDURES on previous page for more tips. This will often be several pageslong. Be sure your data is included here. Tape or staple any drawings or data intoyour notebook so a reader can follow what you did.QUESTIONS AND EXERCISESAnswer any questions or work any end of exercise problems here.Revisit what you just did in lab and make sure you understand what you did andhow you did it. Make more notes to yourself if needed.You may staple/tape the write-up in your notebook to help you remember what youdid.NO LOOSE PAPERS.5Figure 4 – Sample Layout Page

Lab Notebook and Scaling Page 6 of 8FIFTH RIGHT HAND PAGE OF LAB NOTEBOOK: (we will do this in lab)Write “Scaling” and today’s date at the top of the fifth right hand page (page number 7). We are now using the formatshown on page 5 of your lab notebook and in Figure 5 below.You can cut this box out below or follow the handwriting directions below.Enter the title and page number in your Table of Contents.Enter “OBJECTIVES” and under it write the objectives from the Scaling part of this write-up.Enter “PREPARATION” and under it copy the question about the scale model of the Sun and your answer to thatquestion.Enter “PARTNERS” and the names of your partners you work with today.This page will look something like:Today’s Date:ScalingOBJECTIVESCalculate and build, using common objects, a scale model of objects in the universePREPARATIONYou want to build a scale model of the Sun that is about 100,000,000 mi away, thescale of your model is 1 cm represents 1,000,000 mi. How far away would the scaledSun be?(Include your answer here)PARTNERS(Write your partners’ names here.)PROCEDUREDo questions 1 and 2 on the following pages.(Write your answers and show your work so that anyone understands what you did.)Helpful distance unit abbreviations:in inchesft feetmi milesmm millimeterscm centimetersm meterskm kilometers7Figure 5 – Layout for Scaling Exercise

Lab Notebook and Scaling Page 7 of 8Continue by writing “PROCEDURE”.Write or cut and tape the questions and your answers to those questions. Show your work so that anyone will know howyou arrived at your answers.PROCEDURE (we will do this in lab):1. A large Target store is shaped like a box 500 ft along the front (width) by 400 ft deep(length) and 20 ft high.The scale we will use is 1 cm represents 50 ft.Equivalently, 1 mm 5 ftand 1 m 5000 ft which is about 1 mi).a. Calculate the scaled dimensions of the target store for the width, length, & height.b. In your notebook, draw and label the footprint (length by width of the floor) to scale.You need to draw a rectangle measured to the correct scaled units. Use a ruler tomeasure it out in your notebook. Do not draw a 3-dimensional box. Remember torecord what you are doing as well as the answers. Show your work of how you gotthe scaled numbers and draw the rectangle footprint.c. In your notebook, draw and label the front (width by height) of the building to scale.Draw another rectangle to represent this.d. Using this scale, would a cell phone that is 5 inches across be represented by a smalldot or a spherical marble inside the store? Explain you answer. You do not have todo the calculation.e. A second Target store is located 5 miles away. In your scale model, about how faraway is that (read the top again and pay attention to the last line under“Equivalently ”)? Read the scale again and notice any mention of mi for miles. Youdo not need to do an exact calculation.f. Which of the following answers BEST represents where that second Target storewould be located in your scale model?(1) On your desk top(2) Near the door to this room(3) In the lobby of this building(4) Near the skyway to T-building(5) Near the downtown library on the corner of 4th and Hennepin