(1) Tell me which of the three maps A, B and C I need for the following activities.
Traveling and doing business in Beijing requires a map; To determine the general location of Beijing in China, we need a map; You need a map to browse and find the sights in the zoo.
(2) As shown in Figure B, the distance between Tiantan Park and the National Library is 4cm, and the linear distance between the two places is km, so as to judge the direction of Tiantan Park National Library. Test sites: electronic maps and image maps.
Analysis: In the huge map family, there are natural maps and socio-economic maps. Natural maps include topographic maps, climate maps, hydrological maps and vegetation maps, while socio-economic maps include industrial maps, agricultural maps, commercial maps, traffic maps and population distribution maps. With the wide application of modern science and technology in map making, the maps we use are more diverse and practical.
Solution: (1) Looking at the map, you can see that A is the map of Beijing Zoo, B is the map of Beijing, and C is the map of China. According to the functions of various maps, we can see that both travel and business in Beijing need maps of Beijing. To determine the general location of Beijing in China, you need to use the map of China; To browse and find the scenic spots in the zoo, you need to use the map of Beijing Zoo.
(2) The scale indicates the extent to which the distance on the map is smaller than the actual distance, which is expressed by the formula: scale = distance on the map/actual distance, from which it can be concluded that the actual distance = distance on the map/scale; According to the scale in the figure, if the distance between Tiantan Park and the National Library is 4cm, then the linear distance between the two places is 4 ÷1/270000 =1080000 cm =10.8 km; ; Seen from the direction of up, down, north, south, left and right, the National Library is located in the northwest of Tiantan Park.
So the answer is: (1) b; c； a； (2) 10.8; Northwest direction. Comments: This question examines the knowledge points about maps and belongs to the basic question.