بحث في اللغة الانجليزية

[mimi taj]

مساعدة ارجوكم حول مشروع تجربة علمية باللغة الانجليزية

[assil marem]

me too ineed it pleeeeeeez help us :sdf:

[assil marem]

English Project
Make a Battery from Potato
Introduction:
Batteries generate electricity through a chemical reaction between two different electrodes and one electrolyte. Use of Copper and Zinc electrodes and Sulfuric acid as electrolyte is a proven method for this process. We are wondering if we can use any other liquid as electrolyte? This gave us the idea of using a potato as electrolyte. After all a fresh potato has a lot of juice that may serve our purpose as electrolyte.

Problem:
Can Potato be used to generate electricity?

Hypothesis:
Potato juice contains many water soluble chemicals that may cause a chemical reaction with one or both of our electrodes. So we may get some electricity from that.

Material:
For this experiment we use:
• A fresh potato
• Copper Electrode
• Zinc Electrode
• A Digital or Analog Multimeter to measure Voltage or Current of produced electricity.
• Alligator clips/ Leads

Procedure:
We insert copper and zinc electrodes in to the potato, close but not touching each other. We use Clip leads to connect our electrodes to the Multimeter to measure voltage between two electrodes or current passing through the multimeter. For this experiment we removed the ****l of a broken AA battery for our Zinc electrode. (Make sure to test your multimeter by connecting its Positive and Negative wires to each other that should show no current and no voltage).

Record And Analyze Data:

A digital multimeter showed 1.2 volts between the electrodes, but the analog multimeter showed a much smaller value. In other words even though the voltage between electrodes is 1.2 Volts, the speed of production of electricity is not high enough for an analog multimeter to show the exact voltage. (Analog multimeter gets its power from our potato to show the voltage, but digital Multimeter gets its power from an internal battery and does not consume any of the electricity produced by our potato, that is why it shows a larger and more accurate value).
We repeated this experiment with some other fruits and all resulted almost the same. In all cases the produced voltage is between 1 and 1.5 volts, and in all cases they do not produce enough current to turn on a small light.
Another thing that we learned from this experiment is that creating electricity and making a battery is easy, the main challenge is producing a battery that can continue to produce larger amount of electricity for larger amount of time.

By connecting multiple potato batteries you can make enough electricity to light-up a super bright light emitting diode

[mimi taj]

يعطيك الصحة اختي بارك الله فيك.

[khouloud louda]

Problematic:
which factor is most important for plant growth: sunlight, water, or good quality soil.
hypothesis :
water is the most important factor, then sunlight, then soil.
Materials: 8 pots, 1 bag of sand,, 1 bag of potting soil, 2 packets of seeds, , 1 measuring cup, 1 ruler, and 1 moisture meter.

Methods/Materials

We planted ten seeds in each pot, four in sand and four in good soil. We labeled each pot with a letter from A to H. Each letter has a different combination of the amount of water, the amount of sunlight, and the quality of the soil that they^Ore in. We put the plants that had high amounts of light in a window, and the plants that had low amounts of light in a closet. We decided that, on the moisture meter, the plants with low amounts of water should be about a 2, and the plants with high amounts of water should be about a 9, and we watered accordingly. Once the plants started growing, we began to record what day they sprouted, how many stalks were in the pot, how many leaves were on each stalk, how tall each plant is, what color it is, and how healthy it looks. After one month, we judged the plants on their height, the number of stalks in the pot, the number of leaves on each stalk, their color, and their health, and then compared that to our hypothesis.
Observation:
The plants in the shade grew quickest, but weren't as strong. The plants in the sunlight took longer to grow, but were much healthier.
Conclusion
We thought that water was the most important factor in plant growth, but based on our rankings, we decided that sunlight is the most important factor.
this's my project good luck