SCE 1010 Phet Energy Forms and Changes PDF

Preview

Summary

This is a simulation lab assignment for SCE 1010....

Description

Energy Forms and Changes SCE 1010 Chapter 12 Worksheet #1 To Begin: https://phet.colorado.edu/en/simulation/energy-forms-and-changes Choose the “Systems” window to start the simulation Make sure the box that says “Energy Symbols” is checked. Part I – Energy conversions to heat water 1. Turn on the water by pulling out the blue knob. a. How do you know the water in the container is getting hot? By checking the thermometer. b. What type of energy transformations take place in this model?

Mechanical

→ Mechanical

→ Electrical

→ Thermal

2. Pause the scenario. Select the teapot as the energy source, turn up the heat, and play scenario. a. What type of energy transformations take place in this model?

Thermal

→ Mechanical

→ Electrical

→ Thermal

3. Pause the scenario again. Select the bicycle as the energy source, start pedaling, and play scenario. a. What type of energy transformations take place in this model?

Chemical

→ Mechanical

→ Electrical

→ Thermal

b. What kind of energy is converted to waste energy by the bicycle? Thermal Energy c. What force is causing this waste energy? Mechanical Energy d. Why does the biker need to be fed? _ Chemical Energy ____________________________________________ e. What kind of energy (not shown in the simulation) is converted to waste energy by the biker? Kinetic Energy

4. Reset the scenario (don’t forget to check “Energy Symbols” again). Select the Sun as the energy source and the solar panels as the system. a. What type of energy transformations take place in this model?

Light

→ Electrical

→ Thermal

b. Change the “Clouds” selector to “Lots.” What happens to the energy transferred when you have lots of cloud? The cloud blocked the light energy from going on the solar panel.

Part II – Energy conversions to light a bulb Reset the scenario (don’t forget to check “Energy Symbols” again). Select the Sun as the energy source and the solar panels as the system, and the incandescent light bulb. a. What type of energy transformations take place in this model?

Light

→ Electrical

→ Thermal

→ Light

b. What kind of energy is converted to waste energy from the bulb? Thermal Energy c. Pause the scenario and replace the incandescent bulb with the compact fluorescent bulb, then play scenario. What type of energy transformations take place in this model?

Light

→ Electrical

→ Electrical

→ Light

d. What is different about the energy produced between the two different bulbs? The different between the two bulbs is that the fluorescent bulb produces two electrical energy while the incandescent bulb produces one electrical energy. e. Which bulb type produced the least amount of waste energy? The fluorescent bulb.

Summary The First Law of Thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. ALL energy transformations result in waste heat being produced. As you observed in the simulation, some transformations produce more waste heat than others....