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Transcript of SCIENTIFIC METHOD
ASK A QUESTION
USING THE SCIENTIFIC METHOD TO DO AN EXPERIMENT AND DRAW A CONCLUSION
"Students must state a problem in a way that will guide their research and frame their hypothesis."
ASK A QUESTION
"Students will use recognizable sources, including the internet, to gather information about their problem."
"Students will make a statement explaining what they think will
happen in their experiment. This is referred to as an educated guess. This statement must be testable"
My hypothesis is:
Water is going to be alive in 21 days.
Milk will die because it will attract too much bugs. It will rot and smell. I think milk will die around day 6.
Apple juice will be alive in 21 days. I think it will grow well, partly because apple juice is very much like water-because apple juice is clear.
Coke will not survive. I think that the sugar and the acid will kill the plant. I think Coke will die at around day 18.
Orange juice will die because of the acid level. I think it will die at around day 15.
Coffee will die because of the caffeine at around day 15.
Vinegar will die because of the very high acid around day 6.
"Design a test to check the hypothesis. Includes:
a. Materials: a detailed list of all materials required to complete the experiment
b. Procedure: numbered steps that include a description of how variables will be controlled.
-A control refers to a set of data used for comparison. It does not have an independent
variable applied to it
-A variable is what changes in your experiment"
TESTING HYPOTHESIS: PROCEDURE
When I start my experiment I will:
Keep plants on the windowsill in the kitchen.
Water plants every 3 days
Make notes on them and take pictures
I will take PH levels.
I will water each plant with half a cup.
I will spray the plants with insecticidal soap if I find common insects on my plants.
What will happen if I water 7 lettuce plants, each with its own different liquid?
THE EXPERIMENT AND ANALYSING DATA
"Organizing the collection of information or clearly stated observations which allow you to make a conclusion. Data can be displayed in many different ways (Pictures. graphs, charts, tables, paragraphs, etc)"
Day 3: Plant had shriveled up leaves, it looked dead, it was floppy, deformed and rotting. I would definitely not eat the plant. The leaves were coming out, the root separated from the soil itself. The PH level was a surprising 5.0 on day 3.
Day 3: Plant looked healthy, but had 8 leaves, half the leaves of water. I would eat it, and the PH was 7.0
Day 6: Plant looked healthy, it was growing well, I would eat it. It had 8 leaves, the leaves were green and the PH was 7.0.
Day 9: Plant looked healthy, it was growing well, it had 10 leaves. The leaves were green, I would eat it and the PH was 7.0
Day 12: The plant did not look very healthy, it was tilted over, but the plant was still a little green. I would not eat it, it had 8 leaves and the PH was 7.0.
Day 15: The plant was tilted, dying, not growing very well and it only had 7 leaves. I would not eat the plant and the PH was 7.0
Day 18: The plant was wilted over, smelled rotten and all of the leaves were decayed.
HOW TO PROPERLY USE THE SCIENTIFIC METHOD!
Day 3: The plant had rotted. It was not very healthy, leaves were flat, I could see it decay between day 0 and day 3. The leaves, were yellowish. I would not eat them. The PH was surprisingly a 5.0.
Day 3: The plant looked really amazing, looked really healthy, the leaves were a nice dark green, the plant was full of leaves, the leaves are pointing straight up. I would definitely eat the plant. It had 18 leaves and the PH is 6.6.
Day 6: The plant was healthy, it was growing well, I would eat the plant, there were 17 leaves and the PH was 6.8.
Day 9: The plant was healthy, it was growing well, the leaves were green, I would eat it. The plant had 15 leaves and the PH was 7.0.
Day 12: The plant was healthy, it looked like it was growing well, but it was not the same as it looked 6 days ago. I would probably eat it, the plant had 10 leaves and the PH was 7.0.
Day 15: The plant looked healthy, it was growing well, the leaves were green, I would eat it. There were 11 leaves and the PH was 7.0.
Day 18: The plant looked unhealthy, it had attracted lots of bugs, it had lost lots of leaves. It only had 5 unhealthy leaves left and I would never eat them.
Day 3: The plant was healthy, it was growing well, dark green, I would eat it, the plant had 9 leaves and the PH was 6.8.
Day 6: The plant was healthy, it was growing well, it looked good, I would eat it, it had 11 leaves and the PH was 6.8
Day 9: The plant was healthy, the leaves were green, it was growing well, I would eat it, 13 leaves and the PH was 6.0
Day 12: The plant was healthy, it was growing well, it had green leaves, I would eat it, 11 leaves and the PH was 6.9.
Day 15: The plant was tilted over, soggy, on that day I thought that the plant was going to die in 3 days, I would not eat it, 14 leaves and the PH was 6.9
Day 18: There were no large leaves left, they all died, The soil looked bug infested, there were bugs all over the pot, the whole plant decayed. There were 3 very small leaves that I would not eat.
Day 3: The plant looked healthy, it was growing well, dark green, 14 leaves, the PH was 6.6, I would eat it and it looked like it was watered by water.
Day 6: The plant looked healthy, it was growing well, it had 14 leaves, the leaves were green, I would eat it, the leaves were pointing up and the PH was 6.9.
Day 9: The plant looked green, healthy, it was growing well, I would eat it, 15 leaves and the PH was 6.7
Day 12: The plant looked healthy, it looked like it was growing well, I would eat it, leaves were green, 18 leaves and the PH was 6.9
Day 15: The plant was healthy, it was growing well, green leaves, I would eat it, 20 leaves and the PH was 6.9
Day 18: The plant looked healthy, it was growing well, green leaves, I would eat it, 19 leaves, the leaves were sticking up, the plant had attracted lots of bugs.
TESTING HYPOTHESIS: MATERIALS
1. 7 lettuce plants
2. A PH tester
3. 7 different liquids: water, milk, coffee, orange juice, apple juice, coke and vinegar.
4. A measuring cup
5. Insecticidal soap
TEST HYPOTHESIS: CONTROL PLANT
The control plant is the plant that I will water with water. A control plant is the plant that I will compare every other plant to.
TESTING THE HYPOTHESIS: THE VARIABLE
WHAT IS THE VARIABLE?
The variable is what is tested or changed. In this project, the variable is the liquids that I used to water the plants with.
TESTING HYPOTHESIS: THE 5 ASPECTS
I compared the 7 plants with these 5 aspects.
2.If I would eat it and if there are new leaves
4.Look of leaves
5.If I could tell it was watered by another liquid.
Lettuce is very sensitive to different liquids. The average pH of lettuce plants is 6.0-7.0.
Water is the best choice when watering lettuce, as well as every other plant.
Coke is not the best choice to water lettuce plants. There is way too much sugar in the Coke, and the plant will be unable to absorb the water and nutrients that the plant needs. Coke will give the plant a boost, but eventually stops the plant from absorbing nutrients in the long run.
Researchers have discovered that used coffee grinds can be a good fertilizer for lettuce plants, but the researchers also discovered that too much coffee can stress out a plant, just like in humans.
WHAT I LEARNED:
I learned that water is the best choice for watering lettuce plants.
Coke survived better than expected.
Vinegar is the worst choice for watering lettuce plants.
I learned how the Scientific Method works.
WATER (CONTROL PLANT)
"A detailed description of how the data supports or does not
support your hypothesis. Often includes questions for further investigation."
The estimate that water will be alive in 21 days is true.
The estimate that milk will die on day 6 was not true, instead milk died at day 18.
The estimate that apple juice will survive the entire experiment was not true, instead apple juice died at day 3.
The estimate that Coke will survive until day 18 was not true. Instead Coke survived the whole 3 weeks and still looks healthy today. Coke even looked better than water at the beginning of the experiment.
The estimate that orange juice was going to die on day 15 was not true. Instead orange juice survived 18 days and then it died .
The estimate that coffee was going to die at day 15 was close. Instead coffee died at day 18.
The estimate that vinegar was going to die on day 6 was also close. Instead vinegar died on day 3.
I will summarize the data by reporting that water was the same throughout the whole 3 weeks. Every day it was the same thing: Healthy, growing well, it had green leaves, it also had 17-23 leaves throughout the whole 3 weeks, I would eat it and the PH was always 7.0.
Milk has been used as fertilizer for many generations. Feeding plants with milk can help issues like calcium deficiency, viruses and mildew. Milk used a fertilization has proteins, vitamin B and sugars that are good for plants. How ever the bacteria in the milk will spoil, then the plant will smell.
Unsweetend apple juice is better than sweetened. The results of giving a plant too much sugar can cause slow plant growth or even death. There is no benefit to water plants with apple juice, even if it is not sweetened.
Feeding plants with small amounts of orange juice will not kill the plant over a short period of time, but it will eventually kill the plant. In the orange juice, there is too much acid. The acid breaks down the plant's immune system, making it easier for fungus and bacteria to harm the plants. Also, the sugar attracts insects.
Vinegar can kill plants. It is effective to kill weeds. Common vinegar used around the house will definitely kill the plants. The acid is too much for the plants to handle.
WHAT I LEARNED ABOUT THE SCIENTIFIC METHOD
I learned that the scientific method is a very organized way of doing an experiment. It has a step by step description of what to do. It is very clear, easy and precise. It allows the user to be very independent.