CN203573563U

CN203573563U - Teaching aid model for demonstrating direct sunlight point movement, day length change and altitude change of sun

Info

Publication number: CN203573563U
Application number: CN201320736580.1U
Authority: CN
Inventors: 潘振江
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-09
Filing date: 2013-11-09
Publication date: 2014-04-30
Anticipated expiration: 2023-11-09

Abstract

The utility model relates to a teaching aid and specifically relates to a teaching aid model for demonstrating direct sunlight point movement, day length change and altitude change of the sun. The teaching aid model comprises upper, middle and lower layers, wherein the lower layer is a light board, parallel lines are arranged on the light board, 90-0 DEG are respectively marked from a center to two poles, the middle layer is an Earth plane board, the Earth plane board has nine black latitude lines, 0-90 DEG are respectively marked from a center to two poles, south and north poles are marked, a left half side is provided with an arc-shaped hole, one end of a handle is in the hole and is connected with a back end of a pointer, and the upper layer is a hemisphere board. The teaching aid model has advantages of simple making, low cost, convenient operation and visual and easy performance. The Earth plane board is turned through the handle, a movement state of the direct sunlight point at a surface of the Earth can be observed, and the day length change can be further determined. The pointer is turned to a certain latitude, and a scale pointed by an arrowhead on the light board is the altitude angle of the sun at the latitude. The teaching aid model is suitable for being used as a classroom teaching aid in teaching.

Description

Subsolar point moves with day-night length and altitude of the sun and changes teaching aid model

(1) technical field

The utility model relates to a kind of classroom instruction demonstration teaching aid, and a kind of subsolar point moves with day-night length and altitude of the sun and changes teaching aid model specifically.

(2) background technology

Teaching aid rotates yellow sunray plate at present, can observe the movement of subsolar point and the situation of change of day-night length, but the not sunny point of vertical of judgement solar noon sun height on other each latitude on any parallel time between north latitude 23.50-south latitude 23.50.。

(3) utility model content

The purpose of this utility model is to provide one to draw materials simply, cost is low, easy to operate, visual and understandable, practical, can observe the movement of subsolar point and the situation of change of day-night length, can judge again subsolar point between north latitude 23.50-south latitude 23.50 on any parallel time a kind of subsolar point of the solar noon sun height on other each latitude move and day-night length and altitude of the sun change teaching aid model.

The utility model is achieved like this for achieving the above object, the utility model comprises support, light plate and earth surface plate, the utility model is provided with three layers of upper, middle and lowers, its lower floor is yellow sunray plate, one end of light plate is semicircle, and light plate is provided with connecting hole, and the other end is square, on light plate, be provided with and be parallel to each other and with the red line of arrow, from centre to the two poles of the earth, indicate successively from 90 °-0 °; Middle level is circular white earth surface plate, the half side hole that is provided with one section of arc, a left side of earth surface plate, the radius of earth surface plate is identical with the semicircle radius of light plate one end, circle centre position has a connecting hole, be provided with south, the parallel of north latitude of nine black above, from centre to both sides, indicate successively from 0 °-90 °, the top indicates the arctic, and below indicates the South Pole; Upper strata is the semicircle night hemisphere plate of black, has a connecting hole on it; With screw, black pointer is connected to night hemisphere plate, earth surface plate and light plate by the connecting hole on each plate and links together, finally with screw, upper, middle and lower-ranking plate is fixed on support.

The utility model has the advantage of and draw materials simply, cost is low, easy to operate, visual and understandable, practical.By handle, rotate the earth surface plate of middle white circle, just can observe subsolar point moving state at the earth's surface, just can judge the situation of change of day-night length thereupon.Rotate the pointer of black on a certain latitude time, the number of degrees on the yellow light plate of arrow indication, are exactly the sun altitude of this latitude.It is highly suitable in teaching and uses as classroom teaching aid.

(4) accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is light plate figure of the present utility model;

Fig. 3 earth surface plate of the present utility model figure;

Fig. 4 is night hemisphere plate figure of the present utility model.

1-light plate 2-earth surface plate 3-night hemisphere plate 4-pointer 5-handle 6-screw

(5) embodiment

Below in conjunction with embodiment, the utility model is done the explanation of further detail:

The utility model comprises support, light plate and earth surface plate, the utility model is provided with three layers of upper, middle and lowers, its lower floor is yellow sunray plate (1), one end of light plate (1) is semicircle, light plate (1) is provided with connecting hole, the other end is square, is provided with and is parallel to each other and with the red line of arrow, indicates successively from 90 °-0 ° from centre to the two poles of the earth on light plate (1); Middle level is circular white earth surface plate (2), the half side hole that is provided with one section of arc, a left side of earth surface plate (2), the radius of earth surface plate (2) is identical with the semicircle radius of light plate (1) one end, circle centre position has a connecting hole, be provided with south, the parallel of north latitude of nine black above, from centre to both sides, indicate successively from 0 °-90 °, the top indicates the arctic, and below indicates the South Pole; Upper strata is the semicircle night hemisphere plate (3) of black, has a connecting hole on it; With screw (6), black pointer (4) is connected to night hemisphere plate (3), earth surface plate (2) and light plate (1) by the connecting hole on each plate and links together, finally use screw (6) that upper, middle and lower-ranking plate is fixed on support.

Lower floor is that bottom is yellow sunray plate (1), yellow light plate, to be cut into semicircle one of a rectangle fiberboard, at circle centre position, make a call to an aperture, be equipped with the red arrow line being parallel to each other above, representative shines upon the light of the earth, a middle light that represents sun direct projection.From direct light alignment the two poles of the earth, mark successively 90 °--0 °, represent sun altitude.

Middle level is an earth surface plate (2) that white is circular, and first circular radius of its radius and light plate equates, circle centre position is made a call to an aperture, in the left side of the two poles of the earth, north and south line, is provided with one section of arcuate socket.Have the parallel of nine black above, middle one represents equator, both sides be followed successively by 20 ° of south, north latitude; South, the tropic of Cancer; South, 60 ° of north latitude and south, the Arctic Circle.Upper and lower two ends indicate respectively " arctic " and " South Pole ".Along right side semicircle camber line, there is a handle (5) side that marks successively 0 ° of-90 ° of left-half at earth surface plate of latitude from equator to the two poles of the earth, and the other end of handle (5) and pointer (5) link together.

Upper strata is a semicircular black night hemisphere plate (3), represents the night hemisphere of the earth.

During installation, first use a screw (6) that a support, yellow sunray plate (1), earth surface plate (2), black pointer (4) and night hemisphere semi-circular plate (3) are connected together from the aperture position at center, order is the semi-circular plate (3) of earth surface plate (2), black pointer (4) and the black of support, yellow light plate (1), white circle from below to up successively.Using another screw (6) that the light plate (1) of bottom yellow and upper strata black semi-circular plate (3) screw (6) break-through are crossed to circular earth surface plate (2) long arc-shaped holes of white is fixed together again.Another support and yellow sunray plate (1) are fixed together with remaining two screws (6).It is upper that handle (5) one end is directly fixed on the circular earth surface plate (2) of white, still can handle (5) be directly fixed on the circular earth surface plate (2) of white and makes an entirety.Pointer (4) is between upper strata and middle level.

During use, as long as rotate the earth surface plate (2) in middle level with hand, just can obviously see red light on yellow light plate (1) situation of movement in earth plane, just can judge the solar noon sun height on situation of change and each latitude of day-night length thereupon.This teaching aid by rotating the earth surface plate (2) of middle white circle, just can be observed subsolar point moving state at the earth's surface with handle, just can judge the number of degrees on line plate in daytime thereupon, is exactly the sun altitude of this latitude.For example, rotate earth surface plate (2) and make sun direct projection 10 ° of north latitude, at this moment can see, the parallel in the Northern Hemisphere, the length of Length Ratio night hemisphere that is positioned at hemisphere in daytime is long, illustrates that now the days are long and the nights short in the Northern Hemisphere.The Southern Hemisphere is contrary.Rotate the pointer (4) of black, make it point to 45 ° of north latitude, can see on sunray plate (1) corresponding is with it 55 °, illustrates that the sun altitude on 45 ° of parallels of north latitude is now 55 °.If 33 °, pointed south latitude, can see on sunray plate (1) corresponding is with it 47 °, illustrates that the sun altitude on 33 ° of parallels of south latitude is now 47 °.

Claims

1. a subsolar point moves with day-night length and altitude of the sun and changes teaching aid model, comprise support, light plate and earth surface plate, it is characterized in that being provided with upper, middle and lower-ranking, its lower floor is yellow sunray plate (1), one end of light plate (1) is semicircle, light plate (1) is provided with connecting hole, the other end is square, on light plate (1), be provided with and be parallel to each other and with the red line of arrow, from centre to the two poles of the earth, indicate successively from 90 °-0 °; Middle level is circular white earth surface plate (2), the half side hole that is provided with one section of arc, a left side of earth surface plate (2), the radius of earth surface plate (2) is identical with the semicircle radius of light plate (1) one end, circle centre position has a connecting hole, be provided with south, the parallel of north latitude of nine black above, from centre to both sides, indicate successively from 0 °-90 °, the top indicates the arctic, and below indicates the South Pole; Upper strata is the semicircle night hemisphere plate (3) of black, has a connecting hole on it; With screw (6), pointer (4) is connected to night hemisphere plate (3), earth surface plate (2) and light plate (1) by the connecting hole on each plate and links together, finally use screw (6) that upper, middle and lower-ranking plate is fixed on support.