Ian


 * How cigarette smoke effect the groth of plants.**

Question(s) for investigation:

An experiment to test the effect of cigarette smoke on the growth of plants.

Independent variable and how it will be measured:

The amount of smoke of a cigarette. The growth of the plant

Dependent variable(s) and how it (they) will be measured:

The plant and the water The water can be measured by how much is added each day. The time that the plant starts to grow.

Variables held constant: Amount of water given to each plant.

List of Materials and Sketch of the Setup:

Cigarette. Plant Water Lighter Soil Microscope Camera

Who else will work on this investigation? Who will be responsible for collecting materials to get started and when will all materials be ready to begin?

Me and my partner will work on this investigation. We will go and buy the plant this week and will be ready on Monday.

Procedure/Method: 1. Buy two identical plants 2. Take a photo of the cells in the plants under a microscope 3. Cover one of the plants by a glass cover with a hole in it( for oxygen to get in) 4. Light a cigarette and put it inside the glass cover without burning the plant for one of the plant 5. Take pictures everyday of the two and observe the difference 6.After a period of time we take the plants out and take a photo of the cells in the two..

Data: This might be the growth of the plants The other data might be the pictures of the plants
 * Make a blank data table which you plan to fill out during the investigation
 * 1day ||
 * 2days ||
 * 5days ||
 * 6days ||
 * A week ||
 * 10cm ||
 * 12cm ||
 * 14cm ||
 * 16cm ||
 * 17cm ||
 * 9cm ||
 * 10cm ||
 * 11cm ||
 * 12cm ||
 * death ||
 * 12cm ||
 * death ||
 * What other data do you expect to include in a report of your results?

Expectations: What do you think might happen and why?

The plant with the smoke might not grow as healthy as the other plant without the smoke and might even cause death of the plant. Also from the microscopic picture we might be able to find out the death of the plant to weather the smoke cause the cell to die or is it because of lack of living materials. Communication: I will put it on wiki page for others to read. To tell others smoke are bad for all living things.
 * How will you plan to communicate your work clearly to others?
 * What do you expect to accomplish in EACH of the next three class periods in which you can work on this investigation?

**Appendix 1**
Sun light: Enegry from sunlight to carry out photosynesis.

Gas exchange: Require oxygen to support cellular respiration aw well as carbon dioxide to carry out photosynesis.

Water and Minerals: All cells require a constant supply of water

Stems : a stem has a support system for the plant body, a transport system that carries nutrients and a defence system that protects the plant against predators.

leaves : are the plant's main photosynthetic system.

leaft structure : is optimized for absorbing light and carrying out photosynthesis.

blade: collect sunlight, most leaves have thin, flattened sections.

petiole: the blade attached to the stem bu a thin stalk.

mesophyll : the bulk of most leaves consists of a specialized groind tissue.

palisade mesophyll : under the epidermis is a layer of mesophyell cless

spongy mesophyll : beneath the palisade layer

stomata : porelike opening in the underside of the leadt that allow carbon dioxide

Cyanide: It is a chemical compound that contains a cyano group.

Benzene: also known as Benzol is an organic chemical compound that is a flammable and colorless liquid.

Formaldehyde: is a compound in the form of gas that has a very pungent smell.

Methanol (wood alcohol): is the simplest alcohol that is also known as methyl alcohol.

Acetylene (the fuel used in welding torches): is an unsaturated chemical compound that is also the simplest alkyne hydrocarbon.

Ammonia: is found everywhere in the environment but is very toxic in combination with certain elements.

tar:

nicotine:Nicotine is defined as a poisonous, oily, pale yellow substance that turns brown upon exposure to air

how cigarettes affect our body. this picute tells us how the cigarettes affects the body and the lungs. if this damages the body it will too damage the anyother living thing one way of another, we just have to find out what in the cigarettes that affected it there might be over 4000 over things inside the cigarette and might not ever be able to find out exatly what cause it to be damged or even the death of it.http://profiles.nlm.nih.gov/VC/B/B/D/D/_/vcbbdd.jpg what are cigarettes made of. this picture tells us about what is in the cigarettes and how dangerous it is. http://www.geocities.com/loyal_libran/pictures/cigarette_composition.gif so don't try smoking, if u started just try quiting.
 * apendix 2**