Examples

EXAMPLES OF SCIENTIFIC METHOD

Missing items

Whenever something is missing, the very first thing most of us do is shout instead of look for the missing object.  There is a more effective way to deal with this problem–the scientific method.

Let’s say I have a problem: My wallet is missing. How could I use the scientific method to solve this problem?

AT HOME

  • Problem: Missing wallet

  • Data: I went to the market to buy some goods with my friend Mae Ann. When I reached home I noticed that my wallet was gone.

  • Hypothesis: My first hypothesis was: I lost it in the market while we were buying goods. The second hypothesis was: Mae Ann got my wallet. The third was: I had misplaced it in the house.

  • Experiments: I searched all over the house for my wallet, but I could not find it. Then I went to Mae Ann to ask  If she got my wallet. She answered in the affirmative . She said she found it while she was on her way home near the market.

  • Conclusion: I lost my wallet in the market and Mae Ann found it and gave it back to me.

IN COMMUNITY:


Why solving Crimes?


More and more crimes are committed in our  communities. Some of the cases were never solve. With the use of scientific method, law enforcers can do a better job.

Here is an example of the effectiveness of using scientific method in solving crime in our community:

Indeed, using systematic investigation can solve crimes.

Let us solve problems through SCIENTIFIC METHOD:

INVESTIGATE….

THE WORLD OF SCIENCE!!

Problem/ Question: How does sunlight affect the growth of plant?

Data & information:

Plants need sunlight. Houseplants lean toward the Sun, and if they do not get enough light they wither and die. Plants use sunlight to make their food. This process is called photosynthesis.

Photosynthesis is a scientific word made up from Greek words. These words mean “putting things together using light.”

Inside plants’ leaves, light causes air and water to combine to make new chemicals. These chemicals are food for the plants.

In most plants, photosynthesis takes place mainly in the leaves. Like other living things, plants are made up of tiny cells. The cells in a plant’s leaves contain even smaller, disc-shaped parts called chloroplasts. Chloroplasts are the food factories where photosynthesis happens. A leaf the size of your little fingernail contains more than 10 million of them.

Chloroplasts contain chemical called chlorophyll, which is bright green. Chlorophyll gives plants their green color and makes photosynthesis work.

For photosynthesis to work, the chloroplasts need to collect three ingredients: sunlight, air, and water. Sunlight shines on the leaf, and the green chlorophyll inside the chloroplasts soaks it up. Air enters the leaf through tiny holes in the leaf’s surface, called stomata. Water is sucked from the ground by the plant’s roots. It travels through tubes in the stem or trunk to the leaves.

When all three ingredients are present inside the chloroplasts, a chemical reaction takes place. The reaction takes place between a gas in air called carbon dioxide and hydrogen, a part of water. Sunlight causes these two to combine and make new chemicals called carbohydrates. Carbohydrates are plant food. Plants use these chemicals to live and grow.

SOURCE: Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.

Hypothesis: 1.Without the use of sunlight carbohydrates cannot be formed, thus, the reaction would not be complete and there would be no food for the plant.

2. With the absence of one main ingredient (sunlight) photosynthesis cannot takes place. There would be no sunlight that will shines on the leaf, there would be no more inside the chloroplasts to be soaked up.

3. With the absence of sunlight plants cannot grow healthy.

4. Without the enough sunlight plants mat wither and die.

Experiments: Trial & error.

We are going to have two different set-ups. Plant A would be place inside a box, with the absence of sunlight. Plant B would be place outside the house with sufficient amount of sunlight.

After a week we observed the effect of sunlight the growth and development of the plants.

Plant A, which is place inside the box wither and die. Due to the absence of the sunlight Photosynthesis never takes place. Because as photosynthesis means,”putting things together using light,” meaning without the use of sunlight other ingredients for the reaction of photosynthesis cannot takes place.

While Plant B, with sufficient amount of sunlight grow healthy because the reaction takes place between a gases in air called carbon dioxide and hydrogen, a part of water. Sunlight causes these two to combine and make new chemicals called carbohydrates. Carbohydrates are plant food. Plants use these chemicals to live and grow.

Conclusion: Therefore, it only proves that sunlight has a great effect in the reaction taking place inside the chloroplast. And without sunlight plants can’t live nor grow to the fullest.

III.IMPORTANCE OF SCIENTIFIC METHOD

IV.USES OF SCIENTIFIC METHOD

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