ENERGY TRANSFER IN TEMPERATURE & THERMAL ENERGY INSTRUCTOR : MS. SORN

9 ENERGY TRANSFER 4/6/2017 Question: How does energy change when we use a flashlight? Answer: First, the batteries store chemical energy. (This is energy that is released during a chemical change.) When chemical bonds are formed or broken, electrons are rearranged. This movement of electrons makes chemical energy. Batteries can convert stored chemical energy into electrical energy. We will find chemical energy, electrical energy, and light energy in a flashlight.

Key vocab 02: words 7, 8 7. system (noun)- a set of connected things or parts forming a complex whole, in particular. 8. conductivity (noun)- the rate at which heat passes through a specified material

Read and Respond : “Convection” – ½ page response in notebook. Homework 4/6/17 Read and Respond : “Convection” – ½ page response in notebook.

Open notes quiz tomorrow. Notebook check/ due tomorrow Open notes quiz tomorrow! Notebook check/ due tomorrow! Lab report due tomorrow!

LEARNING TARGET I will be able to elaborate on the law of conservation of energy in terms of when the motion of an object changes, there is inevitably some other change in energy at the same time.

Compare and contrast potential and kinetic energy OBJECTIVES Compare and contrast potential and kinetic energy Describe different forms of potential energy vs. kinetic energy

CER- Sample Claim: As temperature increases, the kinetic energy increases, causing the states to change from solid to liquid to gas. EVIDENCE – Look at the image “States of Matter” and describe what is occurring with the atoms of the solid as compared to the liquid, gas, and plasma. (For example, are the molecules are close together or loosely flowing?) Sentence Starter: In a solid… In a liquid… In a gas… In plasma…

-Define kinetic energy CER- Reasoning: - Rule of heat flow -Define kinetic energy -Describe how different states of matter have atoms “behaving” differently.

Energy in motion – 4/7/17 INSTRUCTED BY MS. SORN

OPEN-NOTES/ SOLO QUIZ : 10-15 MINUTES CONCEPT ATTAINMENT FOR THERMAL ENERGY TRANSFER

DO NOW- FRIDAY (F) – 4/7/17 Scenario: A brick is dropped from a height of one meter above a table. When the brick hits the table, it stops moving. Question: What happened to the energy that was in the moving brick? Was it lost? Did it change to other forms of energy? Give as full an explanation as you can of what happened to the energy of the falling brick. Answer: The energy was transferred from the moving brick to the table. The energy simply changed form. It was not lost. The amount of energy in the universe is finite. It is not created nor lost. Even when it appears to be lost, it has simply changed to a form we don’t recognize or which is difficult to observe. When the brick strikes the table, it will make a loud noise. This is a form of energy. The table will also heat up slightly, which is another form of energy.

NOW COLLECTING: LAB REPORT: HEAT VS. THERMAL ENERGY CER: STATES OF MATTER

10- finite (adj)- having limits or bounds. Key vocab 02: words 9- conservation (noun)- the preservation of a physical quantity during transformations or reactions. 10- finite (adj)- having limits or bounds.

Homework in planner- 4/7 Key Vocab 02 Quiz & Packet for Monday, 4/10 Reading Set – Energy Transfer in Motion- Do “What Do You Think?” at end of packet

Convection- read & respond

Pre-Activity Discussion Objective Check: What is kinetic energy? The energy of motion. What is thermal energy? Heat energy because it makes things “hot”. An object’s thermal energy equals the total energy of all its moving particles. Heat transfer happens when some of this energy moves from one object to another object.

Learning target Using my prior knowledge of energy transfer, I will focus on two main forms of energy: kinetic and potential.

Objective Conservation of Energy and Energy Transfer: When the motion energy of an object changes, there is inevitably some other change in energy at the same time.

Activity – energy transfer

Discussion What are the parts in this system? Two hands and the motion of the hands. What type of energy is involved in rubbing your hands together? Kinetic or mechanical energy. What type of energy occurs as the result of rubbing your hands together? Thermal energy What force is involved? Friction

Discussion- “energy in motion” 4/7 What is the relationship between the two types of energy in this system? When the hands stop moving, the kinetic energy stops, and the thermal energy dissipates or goes away, heat transfer. The movement, or kinetic energy, causes the thermal energy to be in the system. If the amount of energy in a system always stays the same, what is happening to the energy in this system? The kinetic energy is transforming into thermal energy. Once the motion stops, the heat transfers from the hands to the air.

Objective check Energy can transform from kinetic energy into potential and from potential energy into kinetic. Energy can be moved from one place to another. Kinetic energy is the energy of motion. Potential energy is stored energy. Energy cannot be created. (Within a system a decrease in one form of energy is associated with an increase in one or more other forms of energy. When the chemical energy in gasoline is burned in a car there is an increase in the motion/kinetic energy and an increase in the thermal energy).

Objective check Energy cannot be destroyed. (Within a system a decrease in one form of energy is associated with an increase in one or more other forms of energy. When the chemical energy in gasoline is burned in a car it is not destroyed. It is transformed into kinetic energy by the movement of the car and an increase in the thermal energy as the engine heats up). An object at rest has energy. (Objects at rest have potential energy. If it has to be lifted, the potential energy has been transformed into the work needed to be lifted. If it falls off the support than the potential energy has been transformed into kinetic energy).

Energy in motion 4/6/2017 (ESSENTIAL QUESTIONS) 1. How are different forms of energy classified? 2. What is kinetic energy? What are the different types of kinetic energy? 3. What is potential energy? What are the different types of potential energy? (BIG IDEAS) 1. They are classified into two types: kinetic energy and potential energy. 2. Kinetic energy is the energy of motion. Kinetic energy takes several forms: radiant, mechanical, sound, chemical, electrical, nuclear, and thermal. 3. Potential energy is stored in a position or shape. Potential energy takes several forms: gravitational PE, electrical PE, mechanical (elastic) PE, chemical PE, nuclear PE.

Depth of knowledge Instructions: Generate 1 sentence that shows your knowledge of this week’s unit. Level 1 – “Heat can be transferred” Level 2- “Heat can be transferred from hot to cold while being conserved by the law of conservation of energy” Level 3 – “The Law of Conservation of Energy (State law)” Level 4 – Identify, describe, elaborate

Different forms of kinetic energy Kinetic energy is the energy of motion. Whether on the microscopic level of atoms and molecules or on the macroscopic level of objects, all particles that move have kinetic energy. Objects in motion exert force by using kinetic energy. Humans have used kinetic energy to develop simple and complex machines, tools, and equipment for work, home, and recreation. Sound waves move, machine parts move, organisms move, the weather moves, and all objects in the Solar System and the universe move.

10 Energy in motion 4/6/2017 (ESSENTIAL QUESTIONS) 1. How are different forms of energy classified? 2. What is kinetic energy? What are the different types of kinetic energy? 3. What is potential energy? What are the different types of potential energy? (BIG IDEAS) 1. They are classified into two types: kinetic energy and potential energy. 2. Kinetic energy is the energy of motion. Kinetic energy takes several forms: radiant, mechanical, sound, chemical, electrical, nuclear, and thermal. 3. Potential energy is stored in a position or shape. Potential energy takes several forms: gravitational PE, electrical PE, mechanical (elastic) PE, chemical PE, nuclear PE.

Different forms of POTENTIAL energy Potential energy is energy stored in a position or in a shape. This module focuses on a special type of potential energy that occurs when objects are raised to a certain height. The stored energy of an object about to fall is a special type of potential energy called gravitational potential energy. Gravity will pull the object down when the object is released. Skiers, roller coaster riders, and kids on slides all take advantage of the thrill of gravitational potential energy being transferred to the motion of downward kinetic energy.