Experimental report on the effect of light on the rat woman, what are the experimental variables of

Middle School Biology Experiment, **The Effect of Light on the Life of Rats.

1. Impact: drying; Damp; Damp; Water; Black; Glass; Dark; Light.

2. Analysis: Experiments include asking questions, making hypotheses, designing experiments, implementing experiments, drawing conclusions, and expressing and communicating. This question examines the experiment of the influence of water and light on the life of the rat woman, and understands the scientific method and steps by answering this question.

The key to solving this training problem is to determine and control the experimental variables and set up the control experiment.

Is yours a biological experiment? It just so happens that I'm in the third year of high school, and I don't know if this will work, and the assumption is: light will affect the life of the rat woman (or not, it doesn't matter, it's a hypothesis anyway).

Provide two environments with light and without light respectively Other conditions are the sameThe conclusion is: according to the experimental results, if it is, it is written consistently, and if it is not, it is written inconsistently. Then write the corresponding conclusions based on the assumptions.

That's probably it, your experiment is still relatively simple, after all, many of them have been written for you, like the experimental questions we do, they are basically empty, and you have to write them yourself, the key is to control the variables.

Hope it helps.

1. Light has an impact on the life of the rat woman.

2, there is light, there is no light, the same.

3. Consistent, light is conducive to the life of the rat woman.

Hypothesis: Light affects the life of a rat woman.

Make a plan: The experimental setup provides both bright and dark environments for the rat woman, and other conditions such as humidity and temperature are the same.

Conclusion: Our group's conclusions are consistent with the hypothesis that light affects the life of the rat woman.

I've just finished my experiment, and it should work!

This experiment probably wants to prove that the rat woman likes to live in a dark environment. The black cardboard is to block the light, and the setting B is not to block the light or to ensure that the light is sufficient. Covering the whole soil is to ensure that the rest of the living environment of the rat woman is the same.

To give you a junior high school biology test question for reference, it should be about the same.

Topic: If you turn over flower pots or stones in your garden or courtyard, you will often see some small animals crawling with slightly flattened, oblong, gray-brown or black bodies. When you move a pot or rock, the rat woman quickly crawls away.

Why is that? Is it because the environment has become brighter? A student has done this, please fill in the process of his ** activity.

Ask the question: Do rat women choose a shady environment?

1) Make assumptions:

2) Formulate and implement the first plan: put a layer of wet soil in the iron plate, cover one side with opaque cardboard, cover the other side with a transparent glass plate, and put 5 rat women on both sides of the iron plate to observe the behavior of the rat women. The variables for this experiment are .

If you put 1 rat woman on each side of the iron plate, can you draw an accurate conclusion? Why?

Answer: (1) The rat woman will choose a dark environment (or the distribution of the rat woman will be affected by light).

2) Light. No. The number of rat women is too small, and the results of the experiment are accidental.

Biological Experiment Report.

1. Ask questions.

In what kind of environment can a rat woman survive? Does light affect the life of a rat woman?

2. Make assumptions.

The rat woman is suitable for living in a dark environment, and the light will affect the life of the rat woman.

3. Conduct experiments.

1. Experimental design: two bright environments, and observe the choice of light and dark environment by the rat woman.

2. Experimental materials: 10 rat women, plastic transparent box, a black cloth, glass plate, sand, chronograph, electric lamp.

3. Experimental device: spread a layer of wet sand in the carton, bounded by the center line of the horizontal axis, cover one side with cardboard, and cover the other side with a glass plate. In this way, two environments, yin and yang, are formed in the box.

4. Experimental procedure: Divide the rat women into 2 groups, 5 on the negative side and 5 on the positive side, and let them stand for 2 minutes. Then, every 1 minute, the number of rat women at different times and in different environments was investigated.

5. Experiment Records:

Environment: 2 points, 3 points, 4 points, 5 points, 6 points, 7 points, 8 points, 9 points, 10 points, 11 points.

Bright 2 2 1 0 0 0 0 0 0 1 1 0.

Shade 8 8 9 10 10 10 10 10 9 9 9 10.

Fourth, the results of the experiment.

Ratwomen are suitable for living in a dark environment, and light will affect the distribution of rat women.

Report on the Influence of Light on the Life of the Rat Woman.

1. Ask questions.

Does light affect the life of a rat woman?

Experimental effects of light on rat women.

Problem: If you turn over the garden, you will often see some small animals with slightly flattened, oblong, gray-brown or black bodies crawling, which are rat women, also known as tide insects. When you move a pot or rock, the rat woman disappears quickly. Why?

Is it because the environment has become brighter?

Ask the question: Does light affect the life of a rat woman?

Make an assumption that the rat woman is suitable for living in a dark environment, and the light will affect the life of the rat woman.

Make a plan:1Materials and utensils: 10 rat women, wet soil, iron plate (or plastic box. cartons), cardboard or glass plates.

2.Experimental device design: cover half of the carton with a cover, and the other half is illuminated by light, so that half of the carton is in a dark place and the other half is in a bright place.

3.Protocol Procedure:

Put the rat woman into the experimental device, and put the same number of rat women on both sides of **, and let it stand for two minutes.

The number of rat women in bright and dark places is counted 10 times every minute.

Implementation plan.

1.Experiment log.

Environment: 2min, 3min, 4min, 5min, 6min, 7min, 8min, 9min, 10min, 11min

Bright 10 7 9 6 6 8 5 3 1 0

Gloomy 0 3 1 4 4 2 5 7 9 10

2.Experimental Results:

Within ten minutes, all ten rat women had run into the shadows.

Conclusion: Supporting the hypothesis, light has an effect on the life of the rat woman. The rat woman prefers the shade to the light.

Light has an effect on the life of the rat woman.