Van Helmonts Experiment

Van Helmonts Experiment
Afra Al-Kaabi 8E


1. A quantitative attribute is one that exists in a range of magnitudes, and can therefore be measured. The experiment relates to quantitative because it is based on measuring the weight of the soil and the weight of the plant.

2. I think that plants grow because they live in soil and plants get bigger because of the soil they ate.

3. My hypothesis is wrong because in the story they prove that the soil after 5 years is still the same weight despite the small changes from 90.9 kg to 90.8kg.

4. Van Helmont tried to control the variables for this experiment by trying to see if there was a difference with the soil weight after 5 years.

5. If plants did really eat soil then the soil weight number would have been less after 5 years of time because the plants would’ve ate the soil.

6. 5 years is a long period of time. By then I think the plant takes out the mineral salt from the soil.

7. Plants get their weight from water and carbon.

8. If I redone this experiment I would’ve measured the water I put in because maybe that would make a difference to see if plants actually drink the water and not eat the soil.








Plant questions and Wordle
Afra Al-Kaabi 8E

1. A vascular plant is a plant that has two networks of tubes in their roots, stems and leaves. One network of tube carries water and the other carries food to the rest of the plant.

2. All vascular plants share a structure called roots, stems, and leaves. Lots of plants have their own specialized version an example would be the petals of the flower.

3. Roots are designed to pull water and minerals from whatever material the plant sits on. Roots also give support for plants in the form of being an anchor in the soil.

4. The two jobs of a stem are they transport food and water and acting as support structure secondly it holds the flower up, so that it can be seen by insects and pollinated.It also holds the leaves up so they can get plenty of light.


5. The xylem of a plant is the system of tubes and transport cells that circulates water and dissolved minerals. As a plant, you have roots to help you absorb water. If your leaves need water and they are 100 feet above the ground, it is time to put the xylem into action! Xylem is made of vessels that are connected end to end for the maximum speed to move water around. They also have a secondary function of support. When someone cuts an old tree down, they reveal a set of rings. Those rings are the remains of old xylem tissue, one ring for every year the tree was alive.

6. Phloem transport sugar and other kind of molecules which plants have created.

7. Chlorophyll is a compound which grabs the sunlight and starts a whole process. It is actually a varied compound.

8. In photosynthesis carbon dioxide and water combine with light to create oxygen and glucose.