Acid Rain Lab

Chart: The above chart shows how many radish seeds were germinated and sprouted. The right column shows the percentage of seeds that germinated for each treatment out of one

The hypothesis behind this experiment is that the Gibberellic acid has a positive growth effect on the plant and causes it grow larger in height.

We took two pots and filled soil in each of them. Then we planted twelve seeds of wheat. During this process, the sowing distance (spacing) between the seeds must be present. The plants required careful supervision to ensure careful controlled variables. Therefore, we decided that one of us will take the plant home. To water the plant we used a misting bottle that was used to spray equal amount of water in both experimental and control group in starting days meaning the first day until the fourth day. After the fourth day, the control group was watered every day and experimental group every two days. Before the plants were watered the moisture content was determined by touching by fingers. (If the soil was moist than usual, meaning more water was present in the soil, the plant would not receive any additional watering. However, due to the perfect weather conditions, this was never required. The experiment was followed as planned). For optimal growth of both plants, they were kept in direct sunlight and were placed in the following direction, 110 degrees east. After one month, the plant 's height was

Purpose/Hypothesis: The purpose of this experiment is to use both cabbage juice and pH paper to determine the pH of household items. This way, we can tell which products are basic and which one are acidic. If we use cabbage juice as an universal pH indicator by comparing it to pH paper then pH determined by the cabbage juice will be unstable because by using cabbage juice, it can be different depending on how diluted it is.

Step 4. Grab T-shirt, or your choice of white clothing. Damp clothing in cold water.

The results observed do not correspond with the outcome predicted by the hypothesis. Despite the nature of the subjects of the experiments, no substantial growth was observed. Only one seed of the 36 planted germinated, and it could only survive for a period of a week. The one seed that germinated reach a height of 1.2 cm. Table 1 presents the average growth observed in each quad. Each quad had a total of 12 seeds. No seeds were removed during the course of the experiment.

4.    After 5 days, measure the height of the 10 plants in each pot. Add up the individual heights and divide by 10 to obtain the average height. Record the average heights in a table, as shown below.

Add three seeds to the potting mix and cover seeds with little remaining potting mix. After the addition of the potting mix, use a dropper filled with water and water each cell until water drips from the wick. Then place the quads on a watering tray under the fluorescent light bank. Each cell should have an equal distance from the light bank. Quads should be three inches below the fluorescent light; the light should also be left on all day. Make sure all wicks are in contact with the mat that sits on the watering tray. Also watch out for the watering system regularly throughout the experiment. After four to five days record plants in the quads, giving their phenotypes in a table for each cell removed all but the strongest plant.

The low-density radish-collard mix pots contained four seeds of radishes and four seeds of collards. The high-density radish-collard pots contained 32 seeds of each species. While our group replicated this 3x2 design four times to total 24 posts, we incorporated the whole class data. Therefore, there were 16 replicates for each treatment. For each pot, we filled soil up until about one inch from the top. We placed the seeds in the pot and piled on around 2 or 3 cm of soil on top. In 3 species levels, seeds were spaced as evenly as possible. In the mixed species pot, the two species were alternated so that each one had the same access to space and nutrients at the other. For each pot, we wrote down our section number, group name, and the contents of the pot. Our group worked at the first bench in the greenhouse and also contained our pots that were spread out evenly in four rows. Our pots stayed in the greenhouse for about five weeks, captured as much sunlight as they could, and got their water source from sprinklers that automatically came on twice a

Table 2: Consists of color extract taken from a red cabbage for a natural indicator. The pH reading that was measured by using the pH meter and the result of the pH reading to determine whether the solution was acidic or basic.

Right after all the seeds were germinated in petri-dishes they were put into pots, covered with soil, and labeled to prevent confusion.

Note that they don’t have to be used in any certain order. To use the vernier kit you must be either in the water to use. Grabbing the vernier kit plug in the temperature sensor on the side. Then hold the sensor in the stream and wait for the degree (Celsius) to appear. Record the number that appears once it seems to stay on a certain number for more than a couple of seconds. After using the temperature sensor you can add another sensor or probe or take out and replace the sensor. Grabbing the pH sensor, you the same, hold it into the water and wait for a number to appear that has steadily stayed the same for a couple of seconds and then record it in your data sheets. Grab the conductivity probe connect it the vernier kit and do the same as the other two sensors. Record number and move on to the next probe. Using the dissolved oxygen probe is pretty much the same as the other probe and sensors. Once the numbers appear record onto the data sheet, the only difference is that once you find out the mg/L of dissolved oxygen there is a small box connected to the probe. On the box you will find a switch that shows either to mg/L or percent of dissolved oxygen. Make sure after getting the mg/L to switch it to percent to get both data numbers. Once having used all the sensors and probes make sure to unplug them and place back into their bags and the vernier kit back to original place. Move on to using the kick seine

The third step that was taken was germinating the seeds. Two sets of paper towels were used to germinate the

Pick up the watering can that you had just filled with water and then pour the water onto the soil of the already potted plant. Pour the water onto the plant for about 6 seconds. You do this so that the soil and roots will easily come out of the pot. (physical, Cognitive)

This lab was a success, because it shows what happens with acid rain, and its effect on seed germination. The seeds will actually grow