Data logging used in scientific experiments and in monitoring systems Need to collect information faster than a human Information accuracy is essential
Example :- Temperatures, Sound frequencies, Vibrations, Times, Light intensities, Electrical currents, Pressure and Changes in states of matter.
ENGAGEMost of drinks contained caffeine.Caffeine is known as substance that can affect heart rate.How caffeine can affect the heart rate?Is caffeine harmful or benefits?
EMPOWERTITLE How Caffeinated and Non-Caffeinated Beverages Affect Heart RateOBJECTIVE To observe the effect of caffeinated carbonated soft drinks on heart rates versus the effect of a non- caffeinated soft drink.
HYPOTHESIS The heart rate of a person who drinks the caffeinated drink will rise significantly, but the heart rate of the person who drinks the non-caffeinated drink will remain constantAPPARATUS Computer, sensorMATERIALS One can of caffeinated coke, one apple juicebox.
PROCEDURES Measure heart rate, by using sensor The graph of the heart beat is shown on the computer.
Drink a can of either caffeinated soft drink as quickly as possible for best results. Record the time you started drinking the soft drink. Remain as still as possible for 5 minutes in order to not affect heart rate with physical activity. The heart beat is then measure for every 5 minutes. Record the result in a table. Repeat the experiment with a can of non- caffeinated soft drink
QUESTION Q: Difference between resting heart rate and the highest heart rate after drinking the soft drink A: 32 Q: Number of minutes after finishing the drink when the heart rate reached its peak A: 9, 17 Q: Number of minutes after finishing the drink when the heart rate returned to resting rate A: approx. 23
Q: Could you drink some amount of caffeinated soft drink without any effect on your heart rate? A: Drinking a small amount of caffeine probably affects your heart rate but not enough for any obvious change in heart rate. Q: What do you see in the comparative results? A: The caffeinated drink clearly increased the heart rate more from resting than the non-caffeinated drink. Q: What would happen if you drank a large amount of caffeinated soft drink? A: Depending on how large the amount, the heart rate could increase to a dangerous level. The greater the amount you drink, the faster the heart rate.
Q: Mountain Dew is marketed in the US as a product with caffeine and in Canada it does not. Why are the marketers releasing two formats of this soft drink? A: Marketers release two formats because, in Canada, dark colored soft drinks, such as Coke and root beer, are the only drinks that can contain caffeine in regulation with Health Canada. Q: Design an investigation to determine how the amount, or dose, of caffeine affects your heart rate. A: Have one person drink a decaffeinated drink, another drink half a can of a caffeinated version of the same drink, and another to drink a whole can and measure heart rate regularly after to see the difference.
ENHANCE Many of us feel like we cannot function without our first cup of coffee in the morning. Caffeine the main ingredient found in coffee is a stimulant. Heart rate increase, pupils dilate, and muscles tighten up. Injects adrenalin into your system to give you a boost and make you feel good.
CAFFEINE FOR PLANT Caffeine not only for human but also for plant. Caffeine helps plant to grow faster. This is because there is nitrogen in coffee.
CAFFEINE IN PLANT Plants produce its own caffeine for defense. Caffeine that comes from plants, provide an insecticidal, and antimicrobial barrier. Caffeine paralyzes and kills some of the insects that feed on the plant, as well as causing sometimes-severe intestinal discomfort to grazing herbivores.
REFERENCES Chris Chenoweth. Caffeine - Benefits and Risks (2006). Access from http://www.disabledworld.com/artman/publish/caffeine.shtml#ixzz2Di9V Ykwk on November 26, 2012. Charlene Collins. Is Coffee Helpful to Relieve an Asthma (2009). Access from http://voices.yahoo.com/is-coffee-helpful-relieve-asthma-attack- 5125211.html?cat=68 on November 26, 2012. Ryn Gargulinski. Caffeine Advantages (2011). Access from http://www.livestrong.com/article/511979-caffeine- advantages/#ixzz2DiGuSZx8 on November 26, 2012.