Context

Theoretical Introduction

Thermal expansion is a fundamental concept in physics that explains how temperature changes affect the density and volume of different materials, including liquids. Expansion occurs when a substance is heated and its particles begin to move faster and take up more space, increasing the volume of the substance.

When a liquid is heated in a container, two things happen simultaneously. The liquid expands and the container also undergoes expansion. However, usually the liquid expands more than the container, and that is the focus of this project. It is essential to understand that a material's ability to expand or contract with temperature changes has significant implications in many aspects of everyday life - from the design of bridges and buildings to food preparation and medication.

To deepen the understanding of these concepts, it is also important to explore topics such as Coefficient of Thermal Expansion, Relative Humidity, Atmospheric Pressure, Boiling Point, and the capillarity phenomenon.

Context

In real life, the expansion of liquids and containers can be observed in many situations, such as the expansion of water in a kettle or wine in a bottle. For example, if a bottle filled with wine is left open and under intense heat, the cork may be pushed out due to the expansion of the wine.

In engineering, the concept of liquid expansion is essential. Engineers need to take into account the expansion of materials when designing structures, such as bridges and buildings, that may be exposed to temperature variations. In fact, failure to consider liquid expansion can lead to serious problems, such as leaks in tanks and pipelines.

Therefore, understanding the behavior of liquid expansion in containers is crucial not only for physics but also for engineering, chemistry, and many other fields.

Activity

Activity Title: "Measuring Liquid Expansion in Containers"

Project Objective

The objective of this project is to provide students with the practical experience of observing and measuring the phenomenon of liquid expansion in containers. Through this activity, students will better understand the physical processes that occur when a liquid in a container is subjected to a temperature change.

Detailed Project Description

Students will be grouped into teams of 3 to 5 people. In an estimated period of 12 hours, the group must carry out various activities, including theoretical research, planning and execution of an experiment, analysis of the collected data, discussion of the results, and writing a final report.

Part of the challenge of this project is coordination and collaboration within the group. Students will need to work together to make decisions, solve problems, and share responsibilities. The purpose is for each group member to contribute equally to the project.

Required Materials

1. Glass container.
2. Liquid (e.g. water).
3. Thermostat (or alternatively, a stove).
4. Thermometer.
5. Measuring tape or ruler.
6. Scale.
7. Calculator.
8. Materials for report writing (e.g. notebook, text editing software).

Detailed Step-by-Step

1. Start the activity with a theoretical study on liquid expansion, coefficient of thermal expansion, atmospheric pressure, boiling point, and capillarity phenomenon. Refer to the suggested references in the introduction.
2. Discuss with your group and decide on an action plan for the experiment. Define the responsibilities of each group member.
3. Collect all materials needed for the experiment. Ensure that all group members understand the purpose of each material.
4. Heat the liquid in the glass container, monitoring and recording the temperature and volume of the liquid at each pre-established time interval.
5. Document all your steps, observations, and results.
6. Analyze the collected data, calculate the expansion of the liquid and the container, and relate the results to the theory studied.
7. Discuss the results with your teams. How do the results align with the theory? What can be learned from this experiment?
8. Finally, write the project report, including all four main topics (Introduction, Development, Conclusions, Bibliography).

Project Deliverables

Students must prepare a project report, which must be submitted in text document format and must include:

1. Introduction: Here, students should contextualize the study, explain the relevance of the topic, its real-world application, and establish the project's objectives.
2. Development: In this section, the theory behind liquid expansion should be detailed, the experiment explained in detail, the methodology used indicated, and the results obtained discussed.
3. Conclusions: Here, students should summarize the main points of the project, highlight the learnings obtained, and draw conclusions from the project experience.
4. Bibliography: Students should indicate all sources consulted during the project development.

It is important that each team member contributes to the report writing, rather than just one person writing the entire document. This will help develop writing, reviewing, and teamwork improvement skills.