Warm Up 1. What is the independent variable”

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Presentation transcript:

Warm Up 1. What is the independent variable” What is the dependent variable? What is the relationship between the # of pizza toppings and cost of the pizza? How much does a pizza with 3 toppings cost? **MATH** What is the slope of this line?

Energy Energy is the ability to do work. Work is a transfer of energy. Energy and work are expressed in units of joules (J).

The two main forms of energy are: Potential energy- stored energy that can be put into future use Kinetic energy- the energy of motion.

The two main forms of energy are: Potential energy Chemical Nuclear Kinetic energy Electromagnetic (light) Thermal (heat) Sound Electrical Mechanical (motion) mechanical (position)

Mechanical energy is the total energy of motion and position of an object. mechanical energy  potential energy  kinetic energy

More mass and/or higher velocity = more KE More mass and/or higher above the ground (resting position) = more PE

22. Use the diagram to answer the question below. Each ball has the same mass. Which ball has the greatest potential energy? Ball A Ball B Ball C Ball D

Thermal Energy is the energy of moving molecules All matter has thermal energy Higher temperature = more KE

http://www.youtube.com/watch?v=te7aFC8DTls http://phet.colorado.edu/en/simulation/states-of- matter-basics

Electrical Energy - the energy of moving electrons.

Sound Energy – moves through vibration of matter Travels in waves MUST have matter to travel through

Seeing Sound Waves http://www.youtube.com/watch?v=DPUlss0_Lkk

Electromagnetic Energy is produced by the vibrations of electrically charged particles. Travels in waves Does NOT need matter to travel Examples: light, x-rays, microwaves

Compare/Contrast: Light and Sound Kinetic energy Needs matter to travel Doesn’t need matter to travel Travel in waves Happen because particles vibrate

Chemical Energy –stored in bonds between atoms Examples: food, fuel, batteries

Nuclear Energy – stored in nucleus of an atom Fusion- nuclei join Fission- nucleus is split Example: sun creates light/heat through fusion of hydrogen nuclei into helium

http://phet.colorado.edu/en/simulation/nuclear- fission

What type of energy?

What type of energy? WHY? ELECTROMAGNETIC ENERGY KINETIC ENERGY

What type of energy?

What type of energy? ELECTRICAL ENERGY KINETIC ENERGY

Heat from a toaster

Heat from a toaster THERMAL ENERGY KINETIC ENERGY

Ring from a Cell Phone

Ring from a Cell Phone SOUND ENERGY KINETIC ENERGY (

Lump of Coal

Lump of Coal POTENTIAL ENERGY CHEMICAL ENERGY

Moving Bus

Moving Bus MOVING MECHANICAL ENERGY KINETIC ENERGY

Law of Conservation of Energy Energy cannot be created or destroyed only transferred from one form to another

1. Ball Rolling Down A Hill To: From:

Ball Rolling Down A Hill To: From:

2. Light Bulb To: From:

Light Bulb ELECTRICAL ENERGY ELECTROMAGNETIC ENERGY To: From: KINETIC ENERGY ELECTROMAGNETIC ENERGY KINETIC ENERGY

3. Electric Oven To: From:

Electric Oven ELECTRICAL THERMAL ENERGY ENERGY To: Heat From: Electricity ELECTRICAL ENERGY KINETIC ENERGY THERMAL ENERGY KINETIC ENERGY

4. Battery Powered Flashlight To: From:

Battery Powered Flashlight To: Electromagnetic Energy From: Chemical Energy ELECTROMAGNETIC ENERGY KINETIC ENERGY POTENTIAL ENERGY CHEMICAL ENERGY

6. Tree To: From:

CHEMICAL ENERGY Tree ELECTROMAGNETIC ENERGY To: From: Wood Sunlight POTENTIAL ENERGY CHEMICAL ENERGY ELECTROMAGNETIC ENERGY KINETIC ENERGY

7. Ipod To: From:

Ipod SOUND ENERGY CHEMICAL ENERGY To: From: Sound Batteries ( POTENTIAL ENERGY CHEMICAL ENERGY SOUND ENERGY KINETIC ENERGY (

8. Solar Panels To: From:

Solar Panels ELECTRICAL ENERGY ELECTROMAGNETIC ENERGY To: From: Electricity From: Light ELECTROMAGNETIC ENERGY KINETIC ENERGY ELECTRICAL ENERGY KINETIC ENERGY

6. Nuclear Power Plant To: From:

NUCLEAR ENERGY Nuclear Power Plant ELECTRICAL ENERGY To: From: Electricity From: Nuclear Fission POTENTIAL ENERGY NUCLEAR ENERGY ELECTRICAL ENERGY KINETIC ENERGY

7. Wind Farm To: From:

Wind Farm ELECTRICAL MOVING MECHANICAL ENERGY ENERGY To: From: Electricity From: Movement MOVING MECHANICAL ENERGY KINETIC ENERGY ELECTRICAL ENERGY KINETIC ENERGY

8. Dam (Hydroelectric Plant) To: From:

Dam (Hydroelectric Plant) Input: Moving Mechanical Energy Output: Electricity ELECTRICAL ENERGY KINETIC ENERGY MOVING MECHANICAL ENERGY KINETIC ENERGY

9. TV To: From:

SOUND ENERGY CHEMICAL ENERGY TV ELECTROMAGNETIC ENERGY To: From: Sound and light From: electricity POTENTIAL ENERGY CHEMICAL ENERGY ELECTROMAGNETIC ENERGY KINETIC ENERGY SOUND ENERGY KINETIC ENERGY (

11. Fire From: To:

CHEMICAL ENERGY Fire THERMAL ENERGY ELECTROMAGNETIC ENERGY To: From: Heat And Light From: Wood POTENTIAL ENERGY CHEMICAL ENERGY ELECTROMAGNETIC ENERGY KINETIC ENERGY THERMAL ENERGY KINETIC ENERGY

12. The Sun From: To:

NUCLEAR ENERGY The Sun THERMAL ENERGY ELECTROMAGNETIC ENERGY To: From: Heat And Light From: Nuclear Fusion POTENTIAL ENERGY NUCLEAR ENERGY ELECTROMAGNETIC ENERGY KINETIC ENERGY THERMAL ENERGY KINETIC ENERGY

13. Car To: From:

SOUND ENERGY CHEMICAL ENERGY Car ELECTRO MAGNETIC ENERGY To: From: Gas KINETIC ENERGY ( POTENTIAL ENERGY CHEMICAL ENERGY ELECTRO MAGNETIC ENERGY KINETIC ENERGY MOVING MECHANICAL ENERGY KINETIC ENERGY

Exit Slip 1. Jose ate a turkey sandwich and an apple for lunch. Later that day, he ran 2 miles during soccer practice. Which of the following energy transformations occurred between lunchtime and the end of Joes’s run? a) Thermal energy was converted to kinetic energy. b) Kinetic energy was converted to chemical energy. c) Electrical energy was converted to thermal energy. d) Chemical energy was converted to mechanical energy. 2. What kind of energy transformation happens in a television? a) Light is transformed into electrical energy b) Electrical energy is transformed into chemical energy. c) Electrical energy is transformed into light energy. d) Chemical energy is transformed into light energy.

Exit Slip What kind of energy transformation happens when a person rides a bike down a hill? Light energy is transformed into chemical energy. Electrical energy is transformed into kinetic energy. Potential energy is transformed into kinetic energy. Kinetic energy is transformed into potential energy. 4. What kind of energy transformation happens when firewood it lit in a campfire? a) Light energy is transformed into chemical energy. b) Chemical energy is transformed into thermal energy. c) Potential energy is transformed into kinetic energy. d) Kinetic energy is transformed into potential energy.

Exit Slip 5. What king of energy transformation occurs when you eat food and then do jumping jacks? a) Light is transformed into chemical energy. b) Electrical energy is transformed into chemical energy. c) Chemical energy is transformed into mechanical. d) Potential energy is transformed into Chemical energy.