Chapter 4. The nature of energy Energy: The ability to do work or cause change All energy involves either motion or position Where are we using energy.

Slides:

Advertisements

Similar presentations

The ability to do work Work = Force x distance.

Advertisements

Chapter 5 ENERGY. What is the ability to do work? 1.Kinetic energy 2.Potential energy 3.Mechanical energy 4.Energy.

ENERGY REVIEW. What is energy? The ability to do work or make change in matter.

Chapter 5 Section 1: What is Energy?

THE NATURE OF ENERGY IPC Notes. ENERGY Energy is involved in every change that occurs Energy can be found in many different forms ex) thermal, electrical,

〉 What is the relationship between energy and work? 〉 Whenever work is done, energy is transformed or is transferred from one system to another system.

What is Energy? Forms of Energy

Forms and Transformations

Kinetic and Potential Energy

What is Energy? Energy is the ability to do work In other words, energy is transferred by a force moving an object through a distance (Work = Force x Distance)

Energy Notes 6 th Grade Science. Chapter 5 Section 1 What is energy?

Chapter 13: Work and Energy

Energy and Energy Resources

Ch.9, Sec.1 – What Is Energy?  energy: the capacity to do work Energy and Work: Working Together Energy and Work: Working Together - work is done when.

Kinetic and Gravitational Potential Energy

Energy What is energy?.  Energy is the ability to do work or cause change.

Energy and Energy Resources Chapter 5 Sections 1-3 pages

What is energy?.  Energy- the ability to do work  When one object does work on another object, energy is transferred from the first object to the second.

Energy (chapter 5) Energy – the ability to do work Electrical, thermal, chemical, etc.

Energy Kim Lachler 2010 NCES 6.P.1 Heat Light Sound.

Potential & Kinetic Energy. Energy The ability to do work The ability to cause matter to move The ability to cause matter to change Measured in joules.

Chapter 15 Sections 1-2.  Energy is the ability to do work.  Energy is measured in Joules, just like work.

Energy and energy resources Section 1 What is Energy?

WHAT IS ENERGY?. ENERGY ENERGY: ability to do work. Whenever work is done, energy is transformed or transferred to another system. SI Units: joules (J)

Physical Science Chapter 15

Matter and Energy Section 3.1: Energy exists in different forms

Physical Science Chapter 5 Energy & Power. 5.1 The Nature of Energy Energy – the ability to do work or cause a change. Energy – the ability to do work.

P. Sci. Unit 4 Chapter 15 Energy. Energy and Work Whenever work is done, energy is transformed or transferred to another system. Energy is the ability.

Sci. 5-1 What is Energy? Pages A. Energy- is the ability to do work and work is the transfer of energy.

Work and Energy. Doing Work What is work? Using a force to transfer energy to an object causing the object to move in the direction of the force.

SOL PS 6 Energy Potential energy Gravitational potential energy Kinetic energy The ability to do work. Energy stored based on position or chemical composition.

Chapter 12 Work, Energy and Power. Energy Is the ability to do work Expressed in Joules (dzuls) Forms of energy: Mechanical, Heat, light, and Chemical.

Section 15.1Energy and Its Forms

Section 3Work and Energy Energy Chapter Section 3Work and Energy Energy and Work 〉 What is energy? 〉 energy: the capacity to do work 〉 Energy is.

Work Work Work –Work is done on an object when a force is applied and it moves in a direction that is parallel to the force acting on it.

Starters for Week of Oct 12 – Oct 16 Name 6 simple machines W Name 2 classes of energy Th Calories per serving F – What does the.

What is energy?.  Energy- the ability to do work  The unit for energy is Joule (J)– just like work.

Forms of Energy. Energy Energy Energy- The ability to do work Energy- The ability to do work Work- A transfer of energy Work- A transfer of energy Work.

Section 3Work and Energy Energy and Work 〉 What is the relationship between energy and work? 〉 Whenever work is done, energy is transformed or is transferred.

Potential and Kinetic Energy Understanding the cyclic nature of potential and kinetic energy.

Work and Energy. What is WORK? Work is equal to the amount of force it takes for an object to move a distance. Formula: Work = Force X Distance W = F.

ence/energy/formsofenergy/p review.wemlwww.brainpop.com/sci ence/energy/formsofenergy/p review.weml.

 Energy= the ability to do work, measure in Joules (J)  Work- the transfer of energy 2 types of energy: 1. kinetic energy 2. potential energy.

Work is the product of a force moving an object a given distance.

Energy. Bellringer How are energy and power different?

Energy. What is energy? Energy is defined as the ability to do work.

Energy The Nature of Energy.

Warm Up 9/19 What would require more power, running a mile or walking a mile? Which of these is are examples of doing work? Standing in place Running a.

Energy and Energy Resources Pages 240 to 247

P. Sci. Unit 4 Chapter 15 Energy.

Chapter M5 Section 1 What Is Energy? Objectives

Nature of Energy Chapter 4.1.

Energy Chapter 4.

Energy and Energy Resources Pages 240 to 247

Energy Chapter 4.

What is energy? Chapter 5 section 1.

Energy Goal: 6.P.3 Understand characteristics of energy transfer and interactions of matter and energy.

Chapter 5: Energy and Energy Resources

CHAPTER 15: ENERGY!.

Energy and Work: Working Together

Energy 8th Grade Mrs. Boguslaw.

Energy Chapter 12 Section 1

Ch. 15 Intro to Physics Energy.

ATB - Work Review How much Work is done in lifting a 5 N book 3 meters? How much Work is done in carrying that same book up a flight of stairs that are.

What is Energy? Chapter 9 Section 1.

Energy Goal: 6.P.3 Understand characteristics of energy transfer and interactions of matter and energy.

Presentation transcript:

Chapter 4

The nature of energy Energy: The ability to do work or cause change All energy involves either motion or position Where are we using energy right now?

What are some types of energy? Thermal energy : The total kinetic energy of particles that make up an object Chemical energy: The energy of a compound changes as the atoms are rearranged to form new compounds. Electrical energy: the energy of moving electrons Sound energy: The energy of vibration Light energy: The energy of vibration of electrically charged particles Nuclear energy: the energy associated with changes in the nucleus of an atom

Mechanical NRG Mechanical energy is the total amount of potential and kinetic energy in a system

Kinetic energy Kinetic energy is energy in the form of motion.

Potential energy is stored energy because of position or shape

Energy transfer

How to calculate kinetic energy: Kinetic energy = ½ (mass x velocity 2 ) or KE = ½ (mv 2 ) Labeled as Joules Joule is expressed in N x m or 1 Joule= 1 kg * (m/s)2 What is the kinetic energy of a 45 kg object moving at 13 m/sec? mass = 45 kg velocity = 13 m/sec KE = ½ (mv2) So… KE = 1/2 (45 kg)(13 m/sec)2 Solving the equation gives a kinetic energy value of J

Calculate Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s. KE = (0.5) * (1000 kg) * (20 m/s)2 KE = Joules If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy? KE = 0.5*1000 kg*(40 m/s)2 KE = Joules As your speed doubles your kinetic energy quadruples.

Gravitational Potential Energy Grav. Potential energy = weight x height Or….. PE = w x h Elastic Potential energy: energy stored by compressing or stretching something A 37 N object is lifted to a height of 3 meters. What is the potential energy of this object? weight = 37 N height = 3 meters Solving the problem gives a potential energy value of 111 J.