Unit 1 Assignment
Chapter 1 Review Q&A
1. The goal of science is to explore and understand our universe and how it works. To explain events in the natural world, and to use those explanations to make useful predictions.
2. Observing is when one gets a sense of how nature behaves. Measurements provide an exact description when something something's and how often.
3. Because it allows them to interconnect their outcomes in compact form, frequently as an added assistance and it allows them to make very accurate predictions about expected outcomes of experiment or observations.
4. Physics, chemistry, astronomy, geology, and biology. It relates to the “web of knowledge” because everything is connected.
5. The steps of the scientific method are observation, hypothesis, hypothesis testing, empirical law, and theory.
6. Hypothesis is a faltering guess about how the world works, based on a summary of experimental or observational results and formulated so that it can be tested by experimentation. Theory is a description of the world that covers a fairly large number of marvels and has met many observational and experimental tests.
Prediction is a guess about how an actual system will be stagger, followed by observations to see if the system did perform as expected within a definite range of situations.
7. With observation, we observe nature without influencing it. When we experiment, we influence some portion of nature and observe the outcome.
Paulina Trzonkowska PART-A INTRODUCTION Diffusion is the random movement of molecules from an area of higher concentration of those molecules to an area of lower concentration. Osmosis is a special case of diffusion, the diffusion of water. In the lab setup there is a dialysis bag with different concentrations of sucrose and glucose. The dialysis bag is then placed in distilled water. Glucose and some iodine is leaving the bag. Sucrose is staying inside the dialysis bag because it will not be able…
Due 09/28/2014 Abstract: In this lab assignment the different microorganisms were observed at different magnifications. Pictures of each different slide were taken using 10x 40x and in some cases 100x magnification. Purpose: The purpose of this procedure is to learn and understand how to observe different microorganisms and cultures at different magnifications. Procedure: 1) Assemble the Microscope as described 2) Open the labpaq and separate all…
name and lab number) and attach. ___________ Date of Experiment ___ 10/6/13 _________ Date Report Submitted ____10/7/13___ __________ Title: Observation of Chemical Changes Objectives: To observe some properties of chemical reactions. To associate chemical properties with household products. Have you made any changes to the procedure? No. Please Explain Data Tables and Observation: Fill out the data sheet for the experiment and submit with this form. Remember: Lab notes…
Measurement and Experimental Error Experiment #1 Tyler Brown E01237083 Partner: Cameron Talbot PHY 223 Lab Instructor: Ms. Shomsky Tuesday, 9:00 AM-10:50 AM Lecture Instructor: Dr. Behringer Abstract In this lab we took measurements using a ruler and Vernier calipers. We used these to obtain the density of our block, keeping the correct number of significant figures throughout. Two ways of measurement gave us different uncertainties, which we had to use to calculate our answer. We also took…
Top of Form CHM130 Lab 1 SAFETY, EQUIPMENT , AND THE SCIENTIFIC METHOD 1. A student enters their laboratory setting and is getting ready to set up. What preparations should be made? (16 points) First disinfect any surfaces that will be used with a 10% bleach solution before beginning any lab. If the solution is too weak meaning less than a 10% solution, you may not kill all bacteria on the surface. It is unsafe to use more than a 10% solution so when mixing the solution make sure to add one…
your own and without assistance, complete this Lab 1 Answer Form electronically and submit it via the Assignments Folder by the date listed on your Course Schedule (under Syllabus). • To conduct your laboratory exercises, use the Laboratory Manual that is available in the WebTycho classroom (Reserved Reading or provided by your instructor) or at the eScience Labs Student Portal. Laboratory exercises on your CD may not be updated. • Save your Lab 1 Answer Form in the following format: LastName_Lab1…
rod, with 200mL of cold water. The mixture was then filtered and the volume was measured at 200mL with no change. Date: April 1, 2014 Purpose: The purpose of this experiment was to introduce the chemistry student to basic laboratory procedures, demonstrate a working knowledge of the equipment and all safety features, and to perform simple lab procedures and compose a lab report at the conclusion of the exercise. Observations: The glass tubing was heated over an open flame for 28 seconds before…
BCIS 637026 Lab 1 Lawrence Joy Pengda Jin Jing Shang Hanish Mandru 1. What is the difference between vulnerability and exposure? A Vulnerability is a weakness or fault in a system or protection that exposes information to attack such as a flaw while an exposure is a vulnerability that is known to an attacker. 2. What type of security was dominant in the early years of computing? During Second World War, the mainframe was created to aid communication code breaking by fighting countries…
Task 1 1. Introduction 2. Will the testing be done after business hours? 3. The scope covers the type of testing one need to do like load testing. The scope defines what will be done in the testing process. 4. Define what will be tested and when. 5. Define what we test first. 6. Define what passed and what failed. 7. Define what day and time testing will begin and end. Task 2 1. Foot printing, Scanning and Enumeration, System Hacking, Deploy Payload and cover tracks. 2. The first step…
calculation to obtain uncertainty in momentum for red laser with micrometer setting of 0.4 mm = (.0004 m)(sin(.00678º)) = 4.73333 m 4.73333= p = 1.39986 kg m/s px = sin = sin(.00678º) = 1.6565 kg m/s ΔxΔpx = 0.0004 = m2 kg/s Table 1: Momentum Calculations L (m) 3.38 Red Δx (m) spot width (m) half-width (m) θ wavelength (m) p (kg m/s) 0.0004 0.008 0.004 0.0678 4.73333E-07 1.39986E-27 0.0002 0.02 0.01 0.1695 5.91666E-07 1.11989E-27 0.0001 0.03 0.015 0.2543 4…