MindMap Gallery Earth Movement Special Topics
This is a mind map on the topic of earth motion. The main contents include: earth revolution and earth rotation. The movement of the Earth is a complex and interesting phenomenon that not only affects our daily lives, but is also one of the important areas for scientists to study the Earth and the universe.
Edited at 2024-02-04 18:54:03This organizational chart, created using EdrawMax, illustrates the hierarchical structure of the Tesla Supercharger Network team. It showcases the chain of command starting from the Chief Executive Officer (CEO) down to various department heads and their respective team members. Each individual's role is clearly defined, showing how different functions such as planning, project construction, power & energy, and operations & service are organized to efficiently manage and expand the Supercharger network globally.
This 2026 Event Countdown Calendar, specifically highlighting the Christmas countdown and created via EdrawMax, presents a detailed monthly breakdown. Each month features a grid layout with a countdown mechanism towards significant events, especially Christmas. The use of red for countdown numbers creates a striking contrast, making it easy to track the days remaining until the big event. It's a perfect tool for those eagerly anticipating Christmas and wanting to plan related activities in advance.
This 2026 Holiday Planning Calendar, crafted with EdrawMax, offers a well-organized monthly view. Each month displays a grid of dates, with major holidays clearly marked. The color-coded design, using red and blue accents, helps distinguish different months and holidays at a glance. It serves as an excellent resource for planning vacations, family gatherings, or any events around holiday periods, ensuring you can make the most of your time off throughout the year.
This organizational chart, created using EdrawMax, illustrates the hierarchical structure of the Tesla Supercharger Network team. It showcases the chain of command starting from the Chief Executive Officer (CEO) down to various department heads and their respective team members. Each individual's role is clearly defined, showing how different functions such as planning, project construction, power & energy, and operations & service are organized to efficiently manage and expand the Supercharger network globally.
This 2026 Event Countdown Calendar, specifically highlighting the Christmas countdown and created via EdrawMax, presents a detailed monthly breakdown. Each month features a grid layout with a countdown mechanism towards significant events, especially Christmas. The use of red for countdown numbers creates a striking contrast, making it easy to track the days remaining until the big event. It's a perfect tool for those eagerly anticipating Christmas and wanting to plan related activities in advance.
This 2026 Holiday Planning Calendar, crafted with EdrawMax, offers a well-organized monthly view. Each month displays a grid of dates, with major holidays clearly marked. The color-coded design, using red and blue accents, helps distinguish different months and holidays at a glance. It serves as an excellent resource for planning vacations, family gatherings, or any events around holiday periods, ensuring you can make the most of your time off throughout the year.
Earth Movement Special Topics
Earth's rotation
The principle of the earth's rotation
track
axis of rotation - earth's axis
1. Indicates the north-south direction, with the North Pole always pointing to Polaris.
2. Imaginary axis, perpendicular to the equatorial coil
Knowledge point 1: Polaris
1. As a star, its relative position in space remains basically unchanged.
2. Visible at night in the Northern Hemisphere, invisible in the Southern Hemisphere
3. Observing Polaris from somewhere in the Northern Hemisphere: elevation angle = local latitude
direction
From west to east, north to south (overlooking)
Knowledge point 1: Observe the northern and southern hemispheres based on the distribution of sea and land
Northern Hemisphere—Oceans (Arctic Ocean)
Southern Hemisphere - Land (Antarctic continent)
Knowledge point 2: The visual movement direction of star orbits is from east to west, which is opposite to the direction of the earth's rotation (north and south). Star orbit motion is the visual effect of the relative motion of stars caused by the earth's rotation (the star orbit does not move, the earth rotates )
cycle
Concept: The time it takes for a celestial body to rotate once along its axis, find a relatively fixed reference object, and the time interval between seeing the reference object at the same position twice (different reference objects have different rotation periods)
Solar day: 24 hours
Sidereal day: 23 hours, 56 minutes and 4 seconds (true rotation period)
speed
Angular velocity
Concept: The angle traveled by a certain point per unit time
Features: Except for the pole which is 0, the rest are all 15°/h
Line speed
Concept: The length of the arc that a certain point moves per unit time
Features: The equator decreases towards the poles, and the pole is 0
Knowledge point 1
1. [Essence] The larger the radius of circular motion, the greater the linear speed, and the angular speed remains unchanged.
2. Different latitudes, the higher the latitude, the greater the linear speed, but the angular speed remains unchanged
3. At the same latitude, the higher the terrain, the greater the linear velocity, but the angular velocity remains unchanged.
4. Linear speed: Artificial synchronous satellite is larger than the earth
5. Angular velocity: artificial geostationary satellite is equal to the earth
Earth's rotation meaning
day and night alternation
1. Noun analysis
Circadian phenomena (not related to rotation)
a. The earth is neither luminous nor transparent
b. There is sunlight
Alternation of day and night (the root cause is rotation)
Assumptions: a. The earth does not rotate or revolve around the earth = there is day and night, no alternation
Assumption: b. There is no rotation, there is revolution == there is an alternation of day and night, and the cycle is one year
True: c. There is rotation and revolution == There is an alternation of day and night, and the cycle is 24 hours
2. Illustration of day and night
Determine the morning and evening line
Along the direction of rotation, a. The day turns to night as the dusk line (the place on this line is experiencing sunset)
b. Turning from night to day is the morning line (the location on this line is experiencing sunrise)
c. The plane of the twilight line is perpendicular to the sun’s rays
d. The morning and evening line bisects the earth and is a great circle passing through the center of the earth.
Find the cutting point
3. Numerical expression of day and night—solar altitude angle h (the angle between the light and the ground)
For a certain place, the time of day when the sun's height is maximum is noon. Generally, the noon sun height angle is marked as H.
An object moving along the ground surface (horizontally) deflects in the direction of motion
1. geostrophic deflection
The northern hemisphere is deflected to the right, the equator is not deflected, and the southern hemisphere is deflected to the left.
2. law
direction
Always perpendicular to the horizontal motion direction of the object, north, right, south, left
size
The equator is 0 and increases toward the poles.
Influence
Deflect a horizontally moving object
3. application
Examine flowing water (river/ocean current)
4. Knowledge point 1: How to draw wind direction
Step 1 Draw the initial wind direction: high pressure points to low pressure, perpendicular to the isobars (horizontal pressure gradient force)
Step 2 draws the final wind direction: north, right, south, left, deflection occurs
Near the ground (around 1000hpa) it deflects 30°~45° due to friction, and at high altitude (around 500pha) it deflects 90°
time difference
1. local time
Concept: refers to the time measured according to local longitude
a. It is the number of time, indicating the relative position relationship between the meridian of a certain point and the sun.
b. Same meridian, same place
c. Early in the east and late in the west
d. Calculation method: add east and subtract west
e. Calculation mode: vertical axis method (same subtraction and different addition)
2. time zone
a.Zone time = local time at the central meridian of the time zone
b. Central meridian degree = number of time zones × 15°
c. Time zone number = longitude/15° (rounded to the nearest whole number)
d. The time difference between zones = the number of time zones minus the same plus the number of different time zones
e. Characteristics: Early in the east and late in the west
3. date line
natural date line
Longitude at 0 o'clock, 1 day later
artificial date line
180° longitude (International Date Line), past -1 day
Earth's revolution