FEBRUARY 5, 2015. SCIENCE STARTER  DO THE SCIENCE STARTER  TAKE 2 MINUTES  YOU ARE SEATED AND SILENT  TAKE OUT YOUR JOURNAL AND TURN TO YOUR HOMEWORK.

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Presentation transcript:

FEBRUARY 5, 2015

SCIENCE STARTER  DO THE SCIENCE STARTER  TAKE 2 MINUTES  YOU ARE SEATED AND SILENT  TAKE OUT YOUR JOURNAL AND TURN TO YOUR HOMEWORK FOR MY CHECK

1 ST SCENARIO  PHET SIMULATION OF AN ENERGY SYSTEM PROVIDED BY A BIKER

TAKING NOTES  USE THE JOURNAL TO TAKE NOTES.  TODAY NEW MATERIALS RELATE TO YESTERDAY AND TODAY CONTENT.  YOU MAY TAKE NOTES ON FEB 4 AND 5 DATES

VOCABULARY  THERMAL ENERGY  CHEMICAL ENERGY  KINETIC ENERGY  POTENTIAL ENERGY

WHAT IS ENERGY?  DEFINITION:  ABILITY TO DO WORK  WHAT ARE THE DIFFERENT TYPES?

DIFFERENT TYPES OF ENERGY  CHEMICAL ENERGY (CHEMICAL POTENTIAL ENERGY)  ELECTRICAL ENERGY  ELECTROMAGNETIC ENERGY  THERMAL ENERGY  HEAT ENERGY  MECHANICAL ENERGY  NUCLEAR ENERGY

CHEMICAL ENERGY  ENERGY STORED IN CHEMICAL BONDS BETWEEN ATOMS  CHEMICAL ENERGY IS RELEASED WHEN CHEMICAL BONDS ARE BROKEN DURING A CHEMICAL REACTIONS

THERMAL ENERGY  THE RANDOM MOTION OF ATOMS AND MOLECULES

HEAT ENERGY  HEAT OR HEAT ENERGY IS  TRANSFER OF ENERGY (USUALLY THERMAL ENERGY) FROM A BODY OF HIGH TEMPERATURE TO A BODY OF LOW TEMPERATURE  In other words – flow of energy from hot to cold

SPECIFIC HEAT CAPACITY  Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 Kelvin (K).  Example:  water is about kJ/kg K  Human is about kj/kg K

CONVERTING TO K  K = C DEGREES

WHAT IS TEMPERATURE?  MEASURE OF THE AVERAGE KINETIC ENERGY OF THE PARTICLES IN A SAMPLE OF MATTER  TEMPERATURE IS NOT A FORM OF ENERGY

POTENTIAL ENERGY  STORED ENERGY  ENERGY DUE TO POSITION, COMPOSITION, OR ARRANGEMENT. ALSO ENERGY ASSOCIATED WITH FORCES OF ATTRACTION AND REPULSION BETWEEN OBJECTS

KINETIC ENERGY  ENERGY OF MOTION

HOMEWORK = JOURNAL SUMMARY  SUMMARY 5 MAIN POINTS FROM TODAY LESSON IN YOUR JOURNAL

AIM PROMPT  WHAT IS THE BEST ENERGY SSYSTEM TO MELT ICE FOR WASHING? Use the RACE format (A paragraph of at least 3 sentences). Use evidence from the lab to support your claim.