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What are the similarities and differences between animals and plants
The ultimate goal of finding the difference between animals and plants is not in the "difference" itself, but in the connection with the living needs of organisms and the adaptation of organisms to the environment
When a beam of light hits a prism, the outgoing light will deflect to the bottom of the prism. If two prism are combined and the parallel light is refracted, what will happen to the outgoing light? Please draw a picture in Fig. 1 and 2. What kind of optical period can be explained by this phenomenon?
Fig. 1 (in fact, two equilateral triangles are close together to form a rhombus. The light rays are emitted in this way. There are two rays.)
Figure 2 (I don't want to draw any more, it's actually composed of two equilateral triangles with their tips together, and the light is still →, two)
In Figure 1, two parallel beams converge at one point after passing through a prism. This rule can be used to explain the converging effect of convex lens on light;
In Figure 2, the two parallel beams diverge upward and downward after passing through the prism. This law can be used to explain the divergent effect of concave lens on light
Answers to the summer homework book of science and English for grade five of Qiuren Education Press (printed by Zhejiang Education Press)
One page 1. A total of 20 pages,
P62 question 1 × √ × √ question 2 on near under in behind under question 3 kites shopping summer kind drink
P65 first question befhagcd second question make active strong fish River
P67 question 1 ×√× question 2 cdeab
P68 question 1 are is question 2 abacc
I can only tell you this. Don't blame me if you're wrong. I made all of them myself. Please remember to give me a reward
Answers to history and politics seventh grade summer homework (the third day of Ideological and Political Education - do you know) answers to science seventh grade summer homework (the second day - activities)
Thought the third day, the answer is written slightly, sorry
The first route: Hangzhou - Shanghai - Xuzhou - Zhengzhou - Baoji - Lanzhou - Urumqi. The famous tourist attractions along the route include Shanghai Bund, Suzhou garden, terracotta warriors and horses of Xi'an, Dunhuang Mogao Grottoes, Tianshan Mountain, etc
Through Beijing, Baotou, Lanzhou to Urumqi
The third line can reach Urumqi via Guiyang, Kunming and Chengdu
2. (1) 50000 500 (2) southeast 100 (3) 3 1500 (4) dense f contour (5) steep cliff in saddle of ridge valley
There is no answer to the science seventh grade summer homework (the next day - activities)
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