3S8P2. Students will be familiar with the forms and transformations of energy. b. Explain the relationship between potential and kinetic energy.EQ: : How does potential energy affect kinetic energy?
4Words to Know work energy potential energy kinetic energy mechanical energy electrical energythermal energy nuclear energychemical energylaw of conservation of energygravitational potential energyelectromagnetic energyelastic potential energy
5In Your Notebook:Title your paper:Introduction to Energy
6Introduction to Energy How are energy, work, andpower related?
7Introduction to Energy You have just finished raking all of the leaves in the yard into a nice pile, when the wind spreads many of them around the yard again.You know that the wind is just moving air, but does it have energy?
8Introduction to Energy Yes, the wind has energy.Energy is the ability to do work or cause change, so the wind has energy.Work is the force exerted on an object causing it to move.
9Introduction to Energy In Your Notebook:Introduction to EnergyEnergy Energy is the ability to do work or cause change, so the wind has energy.Work is the force exerted on an object causing it to move.The term used for energy is Joules (J). This is also used to show the amount of work being done.
10Reviewing Energy and Matter The two main forms of energy are potential and kinetic.Kinetic energy is the energy of matter in motion.
11Reviewing Energy and Matter Certain factors affect an objects kinetic energy, and these factors are both its mass and velocity.Remember, mass is the measure of how much matter is in an object.Velocity is speed in a given direction.
12In Your Notebook:Kinetic Energy Kinetic energy is the energy of matter in motion.Examples: ____________Factors that affect kinetic energy: a. mass – amount of matterb. velocity – speed in a given direction.
13Introduction to Energy As an object’s mass increases, its kinetic energy also increases.Even if both of these trucks hit a wall at the same speed, the larger truck would cause more damage because it has a larger mass.
14Introduction to Energy As an object’s velocity (speed) increases, its kinetic energy also increases.Although all of the cars may have the same mass, the car with the highest velocity (speed) has the greatest kinetic energy.
15In Your Notebook: Kinetic Energy As an object’s mass increases, its kinetic energy also increases.As an object’s velocity (speed) increases, its kinetic energy also increases.
16Reviewing Energy and Matter The two main forms of energy are potential and kinetic.Potential energy is the energy an object hasbecause of its position or shape.
17In Your Notebook:Potential Energy Potential energy is the energy an object has because of its position or shape.Examples: __________
18Introduction to Energy There are two types of potential energy, and the first type is gravitational potential energy.Gravitational potential energy is related to an object’s height.The greater an objects weight or height, the higher its gravitational potential energy.
19Introduction to Energy Skier # 1If two skiers of equal mass went to the top of these two ramps, which would have more gravitational potential energy?Skier # 2Skier # 1 would have more gravitational potential energy because of the height.
20Introduction to Energy There are two types of potential energy, and the second type is elastic potential energy.An object gains a different type of potential energy when it is stretched.Elastic potential energy is associated with objects that can be stretched or compressed.
21Potential Energy Two types of potential energy: a. gravitational potential energy – related to the height of an object.Examples: _____________
22Potential Energyb. elastic potential energy - associated with objects that can be stretched or compressed.Examples: ______________
23Vocabulary Review kinetic energy – potential energy – energy of movementpotential energy –stored energypotential chemical energy –stored energy released by chemical changesmechanical energy –energy that is composed of both potential energy and kinetic energy.
24Independent PracticeThe students will complete at least 2 of the following hands-on activities and answer the associated questions. Jumping Jacks Gravity Balls Rubber Band Man Swinging Pendulum
25TODThe students will explain “If the same force is applied to two objects of different mass which object will have the greater potential and kinetic energy?”