Question

Ученики 4-го класса проводили опыты с целью изучения свойств почвы. Они хотели выяснить, одинаковое ли количество перегноя содержится в разных почвах. Ребята взяли два одинаковых по размеру комочка почвы:один–со школьной клумбы, второй – с берега реки. Оба образца они стали нагревать на спиртовках помогите пожалуйста со 2–ой задачей. Награда 20 баллов

Answer 1

Они хотели выяснить, одинаковое ли количество перегноя содержится в разных почвах. Ребята взяли два одинаковых по размеру комочка почвы: один — со школьной клумбы, второй — с берега реки. Оба образца они стали нагревать на спиртовках. Ответ: размер — одинаковый, образцы — различные, способ — одинаковый.

Answer 2

Ответ:я не понимаю, а где собственно вопрос?

Объяснение:

Answer 3

Soil Experiment Analysis

The 4th-grade students conducted an experiment to study the properties of soil, specifically to determine if different soils contain the same amount of humus. They took two equally sized clumps of soil, one from the school flowerbed and the other from the riverbank, and heated both samples over spirit lamps.

The second task involves:

The second task the students undertook was to observe the changes in the soil samples as they were heated over the spirit lamps. This process likely aimed to investigate the presence of humus in the soil samples and how they react to heating. The heating process might have been used to determine the organic content in the soil, as humus is an organic component.

It's important to note that the specific details of the observations and the expected outcomes of the experiment are not provided. However, it can be inferred that the students were likely looking for differences in the behavior of the two soil samples when heated, which could indicate variations in the organic content, particularly the presence of humus.

The students' experiment seems to be a practical way to explore the differences in soil properties from different locations and to understand the impact of environmental factors on soil composition.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.