Can you do scientific experiments at home? Come and find out!

As people's living conditions are getting better and better, parents pay more and more attention to their children's education. In addition to cultivating various interests and hobbies, many parents also hope that their children can understand some scientific knowledge. Someone asked, "What are some scientific experiments suitable for children to do at home?" Today I will talk to you about small experiments that can be done at home, I hope it will be helpful to you.

01. Friction experiment

In fact, scientific experiments can be done anywhere, but many people do not think of them as scientific experiments. For example, roads are slippery when it rains, and even more slippery when it snows and becomes icy in winter. This is common sense that many people are familiar with.

But behind this, at least there is a basic physics or mechanics common sense: friction . In fact, you can do a simple experiment at this time.

The first step is to find a board , which is actually very easy to obtain, such as glass, floor, or even a cutting board - this is material one.

The second step is to find an object and put it on it . As for what it is, it is up to you, such as bowls, chopsticks, and plates - this is material two.

Then, you can conduct basic friction experiments.

Remember, the core of scientific experiments is to control variables. For example, if you push the same object with similar force, the distance it will go out on glass and wood will be different. At this time, since the difference is basically controlled by the glass and wood, you can conclude that the degree of smoothness affects the distance it will slide out. Congratulations, you have discovered an important scientific content: the coefficient of friction.

The coefficient of friction refers to the ratio of the friction between two surfaces to the perpendicular force acting on one of the surfaces.

This thing is quite important.

Well, regarding the coefficient of friction, you can further explore the factors that affect it.

For example, we just had the same object sliding on different plates, so we can also do the reverse, the same plate, different objects. This is another reverse argument. Furthermore, you can add some water, oil, etc. to see how well it slides.

Or, tilt it and see if it changes? The secret to these things is the friction formula.

Of course, friction can also be used to conduct triboelectric charging experiments.

It's also a control variable, rubbing with different things, or rubbing different things.

Of course, due to family reasons, we generally cannot do quantitative research and mainly focus on qualitative research. After all, quantification requires precise measurement.

02. Other similar experiments

There are many similar ones, no need to purchase extra.

For example, if you have a thermometer at home (in theory, most people do, but the temperature range is smaller), then you can do temperature experiments;

Another example is the thermal expansion and contraction experiment;

Also, the effect of temperature on dissolution may be better with salt.

03. The impact of light on plant growth

You may wonder, Li Lei, you are a biology student, why don't you recommend biological experiments? Well, mainly because I personally think that biological experiments are long and require high equipment. For example, observations often require special equipment. Generally, it is not recommended. After all, many people buy them and they are covered with dust. If you must recommend something, try the effect of light on plant growth . There are actually many things you can do here.

1. The necessity of light. Cultivation with bean sprouts or the like.

In fact, you can find here that there are many factors that can be changed, such as water, air (you can usually try plastic wrap or aluminum foil), fertilizer, etc.

2. The effect of light on growth. For example, the picture below is what we see every day, which is actually phototropism in biology.

Don’t underestimate this, there are actually many secrets behind phototropism.

Personally, I think that in terms of family conditions and safety, physical experiments should be given priority. Without the use of electricity, the safety is actually quite high. The second is biological experiments, and finally chemical experiments.