Scientific QuestionScientific Question

Which source of energy helps the Which source of energy helps the economy The best?economy The best?

The “E” SolutionThe “E” Solution

by: Amir Lewis by: Amir Lewis

Grade 8Grade 8

Did you know!!!!Did you know!!!!

All roller coaster carts uses All roller coaster carts uses potential energy to generate their potential energy to generate their systemsystem

HypothesisHypothesis

If there is no more source of energy If there is no more source of energy for the economy in the world will for the economy in the world will come destruction. come destruction.

Solar energy Solar energy

Solar energy is the light and radiant Solar energy is the light and radiant heat from the sun that influences heat from the sun that influences Earth’s climate and weather and Earth’s climate and weather and sustains life. Solar power is sustains life. Solar power is sometimes used as a synonym for sometimes used as a synonym for solar energy or more specially to solar energy or more specially to refer to electricity generated from refer to electricity generated from solar radiation. solar radiation.

Solar energy part: 4Solar energy part: 4

Since ancient times solar energy has Since ancient times solar energy has been harnessed for human use been harnessed for human use through a range of technologies. through a range of technologies. Solar radiation along with secondary Solar radiation along with secondary solar resources such as wind and solar resources such as wind and wave power.wave power.

Solar Energy Solar Energy Part: 2Part: 2

Hydroelectric and biomass account Hydroelectric and biomass account for most of the available of flow of for most of the available of flow of renewable energy on Earth. Solar renewable energy on Earth. Solar energy technologies can provide energy technologies can provide electrical can provide electrical electrical can provide electrical generation by heat enginegeneration by heat engine

Solar energy part:3Solar energy part:3

photovoltaic means, space heating photovoltaic means, space heating and cooling in active and passive and cooling in active and passive solar buildings; potable water, solar buildings; potable water, distillation and disinfection, day distillation and disinfection, day lighting, hot water, thermal energy lighting, hot water, thermal energy for cooking, and high temperature a for cooking, and high temperature a process heat for industrial purposes.process heat for industrial purposes.

Fast facts Fast facts

Kinetic energy is energy of motion. Kinetic energy is energy of motion. The kinetic energy of an object is the The kinetic energy of an object is the energy it possesses because of its energy it possesses because of its motion. The kinetic energy of a point motion. The kinetic energy of a point mass is given a formula mass is given a formula

Potential EnergyPotential Energy

Potential energy is the same as Potential energy is the same as stored energy. The stored energy is stored energy. The stored energy is held within the gravitational field. held within the gravitational field. When the objects us dropped. A lift When the objects us dropped. A lift motor from a roller coaster exerts motor from a roller coaster exerts potential energy when lifting the potential energy when lifting the train to the top of the hill. train to the top of the hill.

Potential energy part: 3Potential energy part: 3

The higher the train is lifted by the The higher the train is lifted by the motor the more potential is motor the more potential is produced; thus forming a greater produced; thus forming a greater amount if kinetic , but it has a huge amount if kinetic , but it has a huge amount of potential energy , but it amount of potential energy , but it has very little kinetic energyhas very little kinetic energy

Vocabulary wordsVocabulary words

kinetic- caused by motionkinetic- caused by motion

Energy-capacity of doing work, sich Energy-capacity of doing work, sich as moving an object. as moving an object.

Solar-any substance that comes from Solar-any substance that comes from the sunthe sun

Kinetic EnergyKinetic Energy

The word “kinetic” is derived from The word “kinetic” is derived from the Greek word meaning to move, the Greek word meaning to move, inand the word “energy” is the ability inand the word “energy” is the ability to move something. to move something.

ResourcesResources

www.wikipedia.comwww.wikipedia.com

www.google.comwww.google.com

www.ask.comwww.ask.com

www.yahoo.comwww.yahoo.com

ConclusionConclusion

Based on my conclusion, the best Based on my conclusion, the best source of energy for the economy source of energy for the economy would be solar power. The reason would be solar power. The reason why I chose this source for my why I chose this source for my conclusion was because, potential conclusion was because, potential energy is used for pulling or energy is used for pulling or operating big machines.operating big machines.