Proyecto Science Fair Final

8/4/2019 Proyecto Science Fair Final

1/12


2/12

Carlos Andrs Quesada EstradaSebastin Ramrez CotoAndrs Oreamuno Jimnez

Science Fair Project, 2011Page 2

ENVIRONMENT BATTERY

Summary

In our research project will try to answer the question "Is it possible to get

electricity from alternative sources?.

The group used literature from book and the internet. The group

prepared a demonstration.

A conclusion for this project is we can use fruits or vegetables to make

electrical energy.


3/12



Table of contents

Acknowledgements ............................................................................................... 4

Introduction ........................................................................................................... 4

Antecedents ........................................................................................................... 4

Objectives .............................................................................................................. 5

General Objective ............................................................................................... 5

Specific Objectives............................................................................................... 5

Theoretical Framework ......................................................................................... 5

Methodology.......................................................................................................... 7

A. Type of data: ................................................................................................ 7

B. Description of the selected methods and tecnhiques of investigation. ......... 7

C. Analysis and interpretation of data ............................................................. 7

Materials List.................................................................................................... 8

Procedure ........................................................................................................ 8

Whats going on? ................................................................................................ 9

D. Chronogram of activities. ............................................................................. 9

Discussion and Analysis ........................................................................................ 12

Conclusions and recommendations...................................................................... 12

Bibliography ........................................................................................................ 12


4/12



Acknowledgements

We thank our parents, our classmates, and the teacher for helping us

doing this science fair project.

Introduction

This part is the introduction for the science fair project. The topic of the

project is environment battery. The group picked the topic because we like the

energy. This topic is important because this experiment will can be used to make

energy in the future.

Antecedents

This section consists on the antecedents for science fair projects. The group

decided to work on the topic because we want to make electricity with

alternative sources.

Scientific investigation is important because to make electricity is needed

electrolytes and electrodes. We also want to learn how acids can be

used to make electricity.

The questions for this work are:

y How to prepare an experiment to produce energy using alternative sources?y What kinds of metals could we use as electrodes?y What fruits can be using to produce energy?


5/12



Objectives

General Objective

y To analyze how to get energy ofalternative sources.

Specific Objectives

1. To prepare an experiment to produceelectricity using alternatives sources.

2. To examine those kinds of metalscould we use as electrodes.

3. To investigate what fruits orvegetables can be electricity.

Theoretical Framework

Everything on earth stores and uses energy to stay alive. The ultimate

source of this energy is the sun. By what process does life collect and store its

energy? In our experiment we try demonstrate how the process of energy storage

(and use) in living things is described by electrochemistry.

All batteries have a "+" and "-" terminal. Electric current is a flow of atomic

particles called electrons. Certain materials, called conductors, allow electrons

to flow through them. Most metals (copper, iron) are good conductors of

electricity. Electrons will flow from the "-" electrode of a battery, through a

conductor, towards the "+" electrode of a battery.


6/12



A battery is made if a zinc strip and a copper

strip is placed in an acid. The strips serve as the

electrodes and the acid serves as the electrolyte.

Electrodes are the metal parts of the battery

where electric current enters or leaves the battery and an electrolyte is a

solution that can conduct electricity. At the zinc strip, the acid dissolves the zinc

freeing electrons. At the copper strip, the acid uses those electrons to form

hydrogen gas. Because the zinc strip frees electrons and the copper strip uses

electrons, if you put a wire between the two strips, then electrons will flow from

the zinc to the copper hence producing electrical current.

The electrical energy derived from the chemical energy of the battery is

measured through the potential difference between the electrodes called the

voltage.

Voltage is measured in terms of volts, a unit named in honor of theinventor of electrochemical cell, Alessandro Volta.

Our battery like most batteries consists of two

different metals suspended in an acidic solution. We

use fruits and vegetables, because these have acids.

The copper and zinc plates are the two metals and the acid inside the lemon or

potato acts as the acidic solution. This is a single cell of a battery. The zinc and

copper plates act like electrodes and the acid of potato or lemon serves as the

electrolyte.


7/12



In summary, when the metals are

immersed into the electrolyte a

chemical reaction takes place. It

generates a flow of the electrons that

forms a small electrical current.

Methodology

This part is the methodology of the project.

A.Type of data:The data that is useful for this topic was related to the theorical framework

and the instructions for demostration. This data was collected through

bibliographic research on obooks, the internet.

B.Description of the selected methods and tecnhiques ofinvestigation.

In case of demostration is done bassed partially on bibliographic resourses but

also bassed on the procedure and results of the demostration.

C.Analysis and interpretation of dataIn this case of demostration, analysis and interpretation of data was done

based on the instructions of the project.


8/12



Materials List

Copper plates Zinc plates 1 or 2 lemons or potatoes

Connection wires LCD watch, light LED or sound chip

Procedure

1. Roll the lemon or potato on a table so that the juice can flow easily.2. Make two small incisions on each lemon or potato about 2 cm

apart.

3. Insert the zinc plate and the copper plate in the lemon orpotato.

4. Use the wires to connect the leads of theLED lamp, sound chip or LCD watch to the

copper and the zinc plates.

*THINGS YOU NEED TO KNOW*

There are universal standards for positive and

negative terminals. The positive terminal is always the red coloured wire, whereas the

negative terminal is always black. Always connect the negative terminal to a zinc plate (or a

more reactive metal) and the positive terminal to the copper plate (or a less reactive metal).


9/12



Whats going on?

You should see your LED lamp light up, or hear a buzz from your sound

chip. Amazingly, the lemons or potatoes are actually providing power to the

circuit! The zinc and copper plates are acting as electrodes and the juice is the

electrolyte. Charge flows from one metal through the juice to the other metal (it

wouldnt work if both were the same metal), creating a voltage.

You can try different fruits and vegetables see if you can find the most

powerful food! Ifyou have one, you can test the voltage using a multimeter. You

will find your fruit battery has about the same voltage as that used in a torch!

However, you wont be able to use it to light up a light bulb because the current

it produces is too low; this is because there is a lot o f resistance inside the lemons

or potatoes. Batteries have much lower resistance, so produce more current

because Current = Voltage/Resistance.

D.Chronogram of activities.Chronogram of activities is detailed on the logbook. In the logbook include

the activities to be done during the time investigation. It include the data, the

time and the action that the group did in order to prepare this project.


10/12



LogBook

Day: April, 8th

Time: 8:30 am

Action: We decided a topic for science fair. Electrical Energy.

Day: April, 29th

Time: 7:00 am

Action: We decided the type ofproject.

Day: May, 23th

Time: 8:30 am

Action: We composed the general and specific objectives.

Day: May, 24th

Time: 10:00 am

Action: We read and inderlined the information we brought about the

topic to make the teoretical framework.

Day: May, 27th

Time: 7:00 am

Action: We composed the general and specific objectives.

Day: Jun, 7st

Time: 7:00 am

Action: We wrote the title and the acknowledge for the project.


11/12



Day: June 8t

Time: 8:30 am

Action: We wrote the introduction and the summary.

Day: June 10th

Time: 7:00 am

Action: We worked in the antecedents.

Day: June 13th

Time: 7:00 am

Action: We worked on the methodology.

Day: June 14th

Time: 10:00 am

Action: We worked on the methodology.


12/12



Discussion and Analysis

We can use zinc and copper like electrodes because these metals allow that

an electrical current enters or leaves.

We could use plates, clips, coins, screw, nails, forks, etc. too.

Fruits and vegetables usually contain mild acids; they can be used as the

electrolyte ofa battery. For instance, potatoes contain mild phosphoric acid and

lemons contain citric acid.

Conclusions and recommendationsWe can use alternative sources to produce energy by using the electrodes

and electrolytes from fruits or vegetables that have acids.

Bibliographyhttp://www.mercury.co.nz/education/education_projects_lemon.asp , Energy

Education. The power of the lemon.

http://www-openday.ch.cam.ac.uk/pdfs/fruit_battery.pdf , The Electrifying Fruit-

powered Battery.

http://www.energyquest.ca.gov/projects/lemon.html , Lemon power. What to do

a lemon besides making lemonade!

http://www.eweek.org/site/DiscoverE/activities/lemon.shtml , The Lemon Battery

Challenge.

Date post:	07-Apr-2018
Category:	Documents
Upload:	eduardo-oreamuno
View:	221 times
Download:	0 times

Proyecto Science Fair Final

Documents