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Anonymous users2024-02-06What is a top student, that is, a student who is good at learning and has a high score in each subject. Here, Xiao Song wants to emphasize one word, "every door". However, in the primary school curriculum, there is a subject that is encountered in every exam, but parents are easy to ignore a "non-major subject" - that is, "science".
Therefore, especially in the sixth grade, it is imperative to work hard to learn the subject of "science". Why? First of all, "science" is different from "non-verbal", it does not have many test points and it is not easy not to lose points.
Students who usually work hard and hard will get a full score in the final exam.
In view of this, Mr. Xiao Song has made a comprehensive and systematic combing and summary of all the unit knowledge points of the second volume of science (JK version) in the sixth grade. It can be said that the content of the exam is basically included, so you must keep these in mind! At the end of the article, there will also be an issue of the latest "Six Science Final Test Papers", and students can test them on their own against these unit test points.
In fact, science in primary school is to pave the way for several compulsory courses (such as biology, physics, chemistry, etc.) after the primary school promotion, and the subject of science can also exercise their own thinking and creative ability when cultivating children's interest in nature and science, which is really beneficial to children's future learning and physical and mental growth!
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Anonymous users2024-02-05U=I*RKnown: R2=35A V1=6V1 =25VWhen S is closed, that is, R2 is short-circuited, and V's reading is R1's end-of-circuit voltage = U total voltage.
In this case, u-total=ur1=25
When S is turned on, IR2 current=35
r1 = u1 i1 = 6 35 (when the resistors are connected in series, the currents of the two local canceling resistors are equal i1 = i2).
2.When S closes the Weila bypass, the terminal voltage U total = 25V
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Anonymous users2024-02-04l Reason: The height of the water when square is 15 cm, and the volume is: *r 2*15 The height of the remaining part of the space when it is reversed is 5 cm, and the volume of this empty part is:
r 2*5 The volume of the whole bottle is: *r 2*15+ *r 2*5 *r 2*20 The height of the water when square is 15 cm, and the proportion of the whole volume is: ( r 2*15) ( *r 2*20)=3 4 The volume of the whole bottle is liters, therefore
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Anonymous users2024-02-03Water circulation.
1. Fill in the blanks. Melt.
Boiling point. Conversion from (liquid) to (gaseous) state.
Transpiration. 2. Choice.
5. (d)
6. (c)
7. (c)
8. (b)
9. (a)
3. Questions. 10.I think this substance may be water.
11.aDry faster. The two sides of the garment are in contact with the air, forming a convection current, and the larger the contact area with the air, the faster the water evaporates.
12.b. Dry faster. The humidity of the air in the woods is high, and the temperature is relatively low; The air humidity on the beach is low, the water evaporates faster, and the temperature is relatively higher, and the evaporation is faster.
Conservation of water resources.
1. Choice. d)c)d)
Second, the problem. 4.Protecting the environment starts with me, starting from small things.
Do a good job in environmental protection publicity and improve people's awareness of environmental protection.
Help the environmental protection department to supervise and monitor the environmental situation.
Afforestation and greening of the environment. The use of biological action to purify the environment and purify the water body. (No limit to answers).
5.The villagers of Village B will be so polluted that they will not be able to use it.
Village A should first filter the water.
Hope it helps
Hope, thank you @@
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Anonymous users2024-02-02Please.........I can only give you the answer to the water cycle now, which I did.
These two problems are similar to the chickens and rabbits in the same cage: you can use equations, you can also use comprehensive calculations, the equations are easy to understand, use the equations first: >>>More
Revise steadily, and learn what you have learned!
It's good to have a lot of help.
I used to take the "metal activity sequence" review of the regional-level open class, more than ** classroom there are nearly 300 teachers listening to the class and 80 students in class, their own courseware, from the introduction of new lessons, the main review points, knowledge network, student experiments, example analysis, classroom exercises and other aspects can be interspersed freely, the classroom form has explanation, animation, **, etc., students like it very much, said that even the teacher who came to listen to the class did not feel that the review was fried rice. Of course, this requires good courseware creation inspiration and multi-processing technology for text, animation, sound, and image. >>>More
Textbook Analysis This lesson is the second subsection of "Changes in Matter" in Unit 2 of Primary 6 in the textbook version. "What Happens to Matter" is a continuation of the previous lesson of observing the changes of some substances, and by observing the separation of beans and sand, the heating of sugar, and the burning of candles, the physical and chemical changes and the differences between them. Learning Situation Analysis The lesson "Changes in Matter" is a difficult task for children in the sixth grade of primary school to learn and understand the knowledge of chemistry in the third year of junior high school. >>>More
1. Organisms have a common material and structural basis. >>>More