Energy Conversion By : eric #7

A windmill using wind energy and converting it to electricity

Forms of energy

  • Potential energy : Chemical energy - Gravitational energy
  • Kinetic energy : Heat energy - Sound energy - Fossil fuels - Wind energy - Mechanical energy - Chemical energy - Light energy - Electricity - Radient energy

Chemical energy : A energy stored up as chemicals (potential) or a chemical reaction (kinetic)

Gravitational energy : The potential to go downwards due to gravity, but it's being stopped by some force

Heat energy : Energy in the form of heat, or cold. Better known as thermal energy.

Sound energy : Energy in the form of sound, creating vibrations that form words, or some other sound. (ex : roar, bark, scratch, banging pots together, crackling of fire, etc.)

Fossil fuels : An energy released when burning a fossil. (ex : dinosaur bones, coal, fossilized seeds, fossilized plants, fossilized droppings(yes I know it's gross...), etc.)

Wind energy : The energy created when a gas flows in a certain direction.

Mechanical energy : The force created by a living animal

Light energy : The energy emitted by light

Electricity : Electrons flowing in a certain direct non-changing motion.

Radient energy : Energy emitted by the sun.

Flashlights

Energy Conversions

Energy conversions in flashlights : Mechanical energy (Pressing the button/flipping the lever etc.) ------> Chemical energy (The battery/power source reacting to the button/lever) ----------> Electrical energy (The energy released into the wires(connectors) by the battery(chemical energy).) -------------> Light energy(The light emitted from the front) ----------> Some heat energy (Heat emitted from the light energy previously)

A lightbulb

Energy conversions in a light switch ----> light bulb : Mechanical energy (flipping the light switch on) --------> Chemical energy(potential chemical ---> kinetic chemical(there are 2 types)) ------> Electrical energy (electricity released from chemical energy) ---------> Light energy (Emitted by the light bulb, the sparks from electricity create light.) -------> Thermal energy (Electrical energy can create sparks with are very hot, but electrical energy stays longer inside the light bulb, until it dims.)

Car like the one my team created

We created a car (Kimi, Katie, Mike, and I)that had a string that we pulled and several walls so the 'food' wouldn't fall out of the car.

Energy conversions : Radient energy(sun used to grow plants, or animal eats a plant or animal eats a animal who ate a plant)-------->Chemical(potential) energy (from food we eat) -------> Mechanical energy (pulling the car)

How this meets a human need/want : It allows us to easily transport food from the truck to the food pantry with ease so we don't get tired by directly lifting the boxes 12 ft. to the food pantry.

A ruler

Our results - we successfully traveled '12 ft.' (scaled down to 12 in.) but the car fell down a few times.

I think it fell down at the end because the box of 'food' wasn't balanced, so it tipped over on one side with more weight. this has to do with gravitational energy because the energy weighed down the car more on one side, and the energy wasn't balanced anymore so it tipped over the end.

(not real car) a fallen car

Improvments for next time

1. Making it wider so gravitational energy doesn't be unbalanced and turn into mechanical energy, tipping the car so it falls on its side.

2.Making the wheels lower so you don't use too much chemical energy to lift the boxes from the truck to the car, so you can just push instead of carry, using even less effort.

Credits:

Created with images by Richard Corfield (M0RJC) - "Demonstration of Newton's First and Second Law" • Beaches Marley.....offline a lot - "Bayfield countryside" • Francis Bourgouin - "DSCN1190" • chipgriffin - "Lightbulb" • carolinqua - "car" • michael pollak - "ruler" • JosepMonter - "miniature car toy car"

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