Lab 9A. Energy Forms & Changes Name https://phet.colorado.edu/sims/htm|l/energy-forms-and-changes/latest/energv-forms-and- changes_en.html?stickyBurners Lab 9A Goal: Intro to Energy: what is it? What does it do? How do we characterize it? How do we measure it? Energy Forms and Changes Introduction: Energy is another way to understand motion. By understanding how energy functions we can predict outcomes for the analysis of the system being observed. This will consist of an introductory look at energy and how we detect/measure energy as well explore how different substances interact with energy and the consequences of that interaction. The second part of the lab will be to explore the different kinds of energy and how energy can me transformed to be used in various ways. Part 1: Intro to Energy. For this part of Lab7A, you will explore thermal energy, a type of energy we are familiar with. The purpose is to observe something familiar but pointing out the academic detail of this type of energy. ko) vie a. Important: Please note that there is a distinction between heat and thermal energy. Thermal energy is a type of energy, and heat is the transfer (the motion) of that type (thermal) energy. This thermal energy heat relationship is very similar to the relationship of work being that transfer mechanism for the force. b. Please notice throughout this simulation: when the simulation is operating without the Energy Symbols turned on, it is a system we actually see in our daily lives: we see what the energy makes objects do --- similar to forces. Keep in mind that energy has these characteristics: A. Energy is always moving from place to place. B. Energy can move (transferred) from place to place and can change (transform) into other forms of energy. C. Energy is all around us. D. Humans depend on natural resources to live and to supply their energy demands. c. A system with thermal energy is characterize by temperature and specific heat capacity. Heat capacity, basically, is how much heat the system can hold. Temperature is the measure of the system's activity. d. Inthe 1" part of Phys 2A, objects were described with the characteristic of mass. Though the objects in this part of the course still have mass, we will notice that the way objects interact with energy depends on the composition of the material of the objects (chemical make-up, state of matter: solid, liquid, gas). e. In physics, the observer needs to consider an approach to get to the ultimate goal: understand the motion so as to predict the consequence so as to make this information useful to humans. The Experiment Click on the Intro icon in the PhET main menu. ' :% g You will notice 2 blocks, one is iron and one is a brick. Each | has the same volume, though not the same mass density. : There are 2 ring stands each with a heat source. There are two beakers, one contains water, and the other contains oil. Notice that these liquids have the same volume and not the same mass density. In the upper left corner, there is a thermometer. In total, you @ - T; have 4 thermometers to measure temperature. : In the upper right comer is a way for you to link the two - heaters under the ring stand and a way to visualize energy i 3 | Water | | Olive Oil units. 200C 250C 1. Explore the system 200C A. Put a thermometer on each block and in each beaker. Note that the little triangle near the 150C bulb of the thermometer turns to the color of the object for which it is measuring the temperature. 100C Describe temperature of the objects and the liquids.