Please help! Thank you very much!!! Thermal Equilibrium Laboratory: Introduction
ID: 1998550 • Letter: P
Question
Please help! Thank you very much!!!
Thermal Equilibrium Laboratory: Introduction
In this lab you will place two objects with different temperatures next to each other. You will observe how different materials and different masses affect the rate of heat flow. As your textbook explains, thermal equilibrium occurs as a result of the heat energy transfer between two objects with different temperatures that are in physical contact with each other. Heat is defined as a transfer of energy due to a difference in temperatures. In this lab you will study how thermal equilibrium occurs when two objects of different temperatures are placed in physical contact with each other.
First, design an experiment you could conduct that might measure how thermal equilibrium occurs.
What materials would you use?
What would you measure?
What results would you expect?
What if the results were different; what would that indicate?
Write down your answers; you will include a description of your lab and the answers to these questions as part of your lab write-up that you submit to your teacher
Thermal Equilibrium Laboratory: Description
Developing a Hypothesis
When two objects of different temperatures are placed next to each other such that there is physical contact between the two, heat transfer can occur. When the temperatures of the two objects are the same, heat is no longer transferred. This state is called thermal equilibrium.
In this lab you will investigate what factors effect heat transfer and ultimately thermal equilibrium.
Before you start, think about the following questions.
How will the difference in temperature of the two objects affect its final temperature?
How will the masses of the two objects affect the final temperature?
How will the composition of the objects affect the final temperature?
Objectives
Collect data on the time required to achieve thermal equilibrium.
Evaluate the different equilibrium temperatures of the objects based on composition, mass and time.
Support your hypotheses with your knowledge of conservation of energy. Your answers will be part of your lab write-up that you submit to your teacher. Click on the link below to view the items that need to be included in your lab write-up, along with a grading rubric.
http://aventalearning.com/content168staging/2007PhysicsA/labs/thermal/lab.html
Thermal Equilibrium Transcript
NARRATOR: *no narration*
This animation shows how to objects at different temperatures come into contact and achieve thermal equilibrium. Two blocks labeled “A” and “B” rest on a table, and each has a thermometer that records their temperature. Object “A” begins at a temperature of 50 degrees Celsius, while object “B” begins at 25 degrees Celsius. The two objects are brought to together, and heat begins to flow from object “A” to object “B”. The temperature of each object is recorded at three different times. At time T1 (the beginning of the measurements), the temperature of object “A” is 50 degrees Celsius and the temperature of object “B” is 25 degrees Celsius. At time T2 (after some heat has been transferred), the temperature of object “A” is 40 degrees Celsius and the temperature of object “B” is 35 degrees Celsius. At time T3 (after the two objects have reached thermal equilibrium), the temperature of both object “A” and object “B” is 38 degrees Celsius.
Lab Assignment: Thermal Equilibrium Laboratory: Analysis
Organizing Data: For each of the experiments, calculate the change in temperature for each chamber using the equation T = Final Temp – Initial Temp. You should add a column to your spreadsheet for this calculation.
Organizing Data: For each of the experiments, calculate the change in heat, Q=mcT, for each object. You should add a column to your spreadsheet for this calculation.
Lab Assignment: Thermal Equilibrium Laboratory: Conclusions
Making Comparisons: Using your data from the experiments, can you use the change in temperature to predict how long it will take for thermal equilibrium to be reached?
Making Comparisons: Using your data from the experiments, how does temperature affect the time it takes to reach thermal equilibrium?
Making Comparisons: Based on your data and your observations, what influences how quickly the objects reach equilibrium?
Making Comparisons: The initial temperatures are the same in each experiment. Explain why it takes different amounts of time for thermal equilibration to occur in each case.
Explaining Observations: Using your observations, describe what happened in terms of heat.
Explaining Observations: Using your data and your observations, explain the changes in the rate of temperature changes throughout the experiments. Use general terms that could be applied to all of the experiments.
Making Predictions: You are given an experimental setup similar to the ones that you have used in this lab. Your task is to move all the heat from one object to the other. You can change the temperature of either chamber and you can place anything between to two objects. Suggest a strategy to do this.
The lab report that you submit to your teacher should include:A document file containing:
Your experimental design idea and answers to the initial questions
Your hypothesis about this experiment supported with physics concepts
Answers to the Analysis questions and Conclusions from this experiment
Copy the following spreadsheet information into your document:
Your data tables from your experiments along with calculations from the Analysis section
Explanation / Answer
As per guidelines issued to me, I'm not allowed to provide solutions to such questions pertaining to writing whole assignments, lab reports,whole homework sheets, etc.