Data logging pre(1)

DATA LOGGING: A SIMULATION OF

GLOBAL WARMING

ENGAGE

Overview

Place with normal temperature

Place with high temperature

PROBLEM STATEMENT

Why are the temperature at certain places are hotter than the other places?

What is the major factor that lead to this situation?

EMPOWER

This experiment was taken from :http://www.fi.edu/guide/otoole/datalogging.html

Conducting the Experiment

Equipment and materials:• Data logger connected to a PC or a graphical calculator• Two temperature probes • Two plastic pop (soda) bottles• Two clamp stands, bosses and clamps• Carbon dioxide gas (made from marble chips react with

HCL)• Two heat lamps or flexible spotlights (at least 60W)• Modeling clay ( e.gPlasticine TM)

Procedure:1. A plastic pop bottle is filled with Carbon Dioxide gas.(The

Carbon Dioxide gas is generated by marble chips reacted with HCL).

2. Another plastic pop bottle with the same size and characteristic is filled with air.

3. Both plastic pop bottle is then closed with its plugs.4. The apparatus is set as figure below.5. The temperature probes is inserted into both plastic bottle

and connected to computer for data collecting.6. Heat lamps is placed towards the bottle as a source of

sunlight.7. The time starts as the heat lamps is switched on.8. The data from the temperature probe that connected to the

computer is then collected and analyzed.

Result and Discussions

• Graph of Temperature vs Time fo Carbon dioxide (pink) and air (blue).

• From the experiment we can see that carbon dioxide temperature is higher than normal air temperature starting from time equal 12s.At this time its temperature is higher 0.5 oC than normal air temperature. This difference can only be seen by using electronic measuring devices like temperature probe that can give data to a very specific and accurate value.

• Carbon Dioxide has been identified as one of the atmospheric gases that allow the sun's energy to pass through it but tends to prevent heat escaping. When light from the lamp enter the bottle filled with carbon dioxide the radiation is trapped, it is absorbed by the double bonds of carbon dioxide molecules, which transfer the radiation to kinetic energy as the bonds stretch and vibrate. The energy is then re-emitted at heat energy, which causes the atmosphere in the bottle to warm up.

• It is normal for a certain amount of carbon to be in the atmosphere. Carbon and other atoms are in the atmosphere above the earth and help to insulate it to a temperature that is hospitable to life.But excess amount CO2 lead to Green house effect problem.

ENHANCE

Application in daily lifehow to reduce carbon dioxide level in atmosphere

ventilate our home naturally

stop burning fossil

create awareness among the

society

Individual awareness

plant more trees

renewable energy

Unique features

shows us that the major factor that can leads to global warming problem which is an excess

Measurements are always taken at the right time

graphs of temperature against time for the carbon dioxide can be plotted directly

Have some manipulated variables to get variety of data.