In my project I was trying
to find out what battery lasts the longest. I will also
try to determine if the cost of the battery has anything
to do with the power it has.
I think the Duracell
battery will last the longest. I also believe that the
more expensive the battery the longer it will last.
paper, wires, stop watch,
battery holders, metal connectors, computer, light bulbs,
and graph paper. Batteries - Duracell, Everready,
Energizer, and BA 30 "Army batteries."
I researched on how a
battery produces electricity. The battery is a dry cell. A
chemical reaction between the electrolyte and the zinc
electrode helps produce electricity.
- Electrodes - The
negative or positive part of an electric cell.
- Electrolyte - A liquid
or moist substance that conducts electricity.
- Dry Cell - An electrical
cell that has a moist electrolyte.
- Terminal - The negative
or positive end of an electolyte.
I experimented by testing
the power of four different brands of batteries. I did
this by hooking up the batteries to a light bulb. I then
kept track of the length of time each bulb stayed lit. I
tested two batteries from each of the four brands.
After the testing was
completed the following results were recorded: The
Duracell battery lasted the longest, 101 hours and 20
minutes; Energizer battery, second, 99 hours and 17
minutes; Eveready battery, third, 28 hours and 30 minutes,
and last but not least was the BA 30 batteries, 25 hours
ad 58 minutes.
I thought the Duracell
battery would last the longest. I guessed right! It was
two hours and 3 minutes longer than the Energizer. I also
determined that the cost of the battery does relate to the
amount of battery power.
How did I come up with
my project idea?
My dad and I were getting
ready to go on a boundry waters canoe trip and we were
debating on what kind of batteries to purchase for our
flashlights. We wanted ones with a lot of power. So I
thought that would be a good science fair experiment.
What did I learn from
I learned that science fair
projects are a lot of hard work. The most powerful battery
of the four I tested was Duracell. It also was the most
How close were my
hypothesis and conclusion?
I guessed that Duracell
would last the longest and I was right. It was also the
Did I learn anything
new from my project?
Yes I learned through this
experiment that if you buy a more expensive battery you
get a more powerful battery.
What was the most
interesting part of my project?
It was when my hypothesis
and conclusion matched.