Answers to lesson 1 of science homework a of PEP

Answers to lesson 1 of science homework a of PEP

I only know one thing. The foundation and consolidation of the first question natural phenomena, observation, experiment, thinking, scientific methods
The fifth question is what our teacher said. It's not necessarily true that science and technology has changed the world, which has both positive and negative effects. The development of science and technology must protect the environment and coordinate the relationship between man and nature

B answers on page 5-6
fast

1. Unreliable thermometer
2. Thermal expansion and cold contraction degree centigrade 0 ℃ 100 ℃ 37 ℃
3. The degree of heat and cold is 29.0 ℃ 29 ℃ - 3.0 ℃ - 3 ℃ 32 ℃
4、 110 －20 1
42 35 0.1
50 －30 1
According to the actual measurement needs to design
5. The minimum scale is fully contacted to take out the phase plane
6、D
7、C
8、C
9、C
10、B
11、B
12、
(1) Before using the thermometer, the mercury column was not thrown back into the glass bubble
(2) When the thermometer is used to measure the body temperature, the glass bubble is not in full contact with the body
(3) Use a thermometer to measure the temperature of the hot water, because the temperature of the hot water exceeds the range of the thermometer
13、
（1）30 12
(2) The smaller the temperature difference between water temperature and room temperature, the faster the water temperature drops

Grade 7 Volume 1 science homework B page 25
(5) In Figure 3-14 of the textbook, find out the location of nanyandang mountain, Putuo Mountain and Qiandao Lake in Zhejiang Province,,
6. If a stands for textbook figure 3-13, and B stands for textbook figure 3-15, plan of Rong'an community
(1) A the meaning of scale in the figure
(2) B the meaning of scale in the figure -
(3) In the two diagrams, the one with larger scope is the diagram, and the one with more detailed description is the diagram
(4) In figure a, find the capital of Beijing, and mark the approximate location of Wenzhou, the direction of Wenzhou in Beijing, and the linear distance between Wenzhou and Beijing is about
(5) In Rong'an community, if Xiao Ming is in the east gate of Haiming materials, he will go to the rural credit cooperatives of the development zone along the highway. What is his simplest and quickest route

(1) One centimeter on the map represents a distance of 500 kilometers
(2) One centimeter on the map represents the distance of 5000 cm in the field
(3) Xiaoda
（4）a b
(4) 1250 km southeast
Hope to adopt~~~~