Black Hole

Our Shaking World

Critical Thing Question:
Do you agree with the theory of plate tectonics? Why of why not?

    300 million years ago, all continental was together, constituted a huge Pangea. During time passing, the Pangea gradually divided, drifted, and drifted until now. Plate tectonics is the sections of crust. Plate tectonics theory is talking about the earth is made of plate, and broke into pieces and pieces move. In 1912, Alfred Wegener thought of the theory of Continental Drift. Theory of continental drift is supported to plate tectonics theory. Theory of Continental Drift also talking about the continental slowly broke to each part. I agree with the theory of plate tectonics, because the ancient geography, three types of boundary, and convection currents is three pieces of evidences of the theory of plate tectonics.

    As long as the continental move to the middle in the same direction, they will almost merged together. After they merged together, some geographic feature, and ancient animal group was similarity and continuity, this can shows they were together, but after they separated and drifted caused they in different location now. For example, Cape Mountain in Africa and Buenos Aires mountain in South America can be connected, this seen as the same geological structure.
    Convection currents is happen in asthenosphere, a part of mantle. The heat from inner core and outer core make currents goes up, cool from crust make currents goes down, and circulating. Convection currents make the crust on earth come together and separated. This can cause continental drift.
    Divergent boundary, convergent boundary, and transform boundary is three types of boundary. The divergent boundary is two plates separating to different direction. It can create the seafloor spreading. The convergent boundary is two plates come together, it can create the mountain, volcanic islands. The transform boundary is two plates moves to opposite direction, it can create the earthquake, and tsunami. This shows the movement of earth make plates move, and cause different consequence.
    In conclusion, I think plate tectonics theory is truth. The continental is slowly moving, this cause the earth's surface looks like today. Geographic feature is the evidence of Pangaea. Convection currents cause the movement of plates. Three types of boundary is the evidence of movement of plates.

Reflection:
1.What did you enjoy most about this project and why?
I enjoy most about the lab of convection currents because it is interesting and easy to learn about convection currents.
2.What was most challenging for you during this project and why?
The most challenge for me during this project is put points on the map of ring of fire, because it need be careful.
3.What new skills did you learn from doing this project?
I learn about the structure of the earth.
4.Is there anything that you could have done to improve any of your work? Explain
I think I could read more information about ring of fire, so I can add more details to the summary of ring of fire. I didn't write too much in that summary.
5.What would you change about this project?
I would try to do model, or video.

Seasons

Vocabulary:
Revolutions - 公转:A celestial body moving around another celestial body.
Revolution length - 公转长度:The time of revolution.
Orbit - 轨道:The path that one celestial body in its revolution. 
Ellipse - 椭圆:An oval.
Axis tilt - 轴倾角:The angle of planet is change. 
Direct sunlight - 直射阳光:The sunlight coming on a straight way.
Indirect sunlight - 间接阳光:The sunlight coming through something, or the less of sunlight.
Hemisphere - 半球:Half of planet.
Equator - 赤道:The line that divide the hemisphere, it is always summer.

Summary:

Seasons is mean the four different weathers alternating change of the year that is spring, summer, autumn (fall), and winter. It affects a lot of things in the Earth's environment. For example, bear and snake will sleep at winter. The cause of seasons is Earth’s axis tilt by 23.5 degree and revolution. An axis is an imaginary line that goes through the center of the Earth. The axis tilt is the angle of this line is change. Revolution is a celestial body (planet) moving around another celestial body. Seasons cause the weather change and the day length and night length at each season. When there is summer, day length will be longer than night length. When there is winter, night length will be longer than day length.

Solstice is the first day of summer or winter. Summer solstices is the first day of summer, this day are the longest daytime of the year. It occurs on June 21 in the northern hemisphere, December 22 in the southern hemisphere. Summer is warmer than winter, because sunlight is direct hit on the hemisphere. Direct sunlight is the sunlight coming on straight way. Winter solstices is the first day of winter, this day are the longest nighttime of the year. It occurs on December 22 in the northern hemisphere, June 21 in the southern hemisphere. Winter is colder than summer because the hemisphere is indirect sunlight. Indirect sunlight is the sunlight coming tilt or the less of sunlight.

Equinox is the first day of spring and fall, day and night are same length, it only occur two times of the year. Spring equinoxes is the first day of spring, it is the start of the period of longer daytime. It occurs on March 21 in the northern hemisphere, September 22 in the southern hemisphere. Fall equinox is the first day of the fall. It is the start of the period of longer nighttime. It occurs on September 22 in the northern hemisphere, March 21 in the southern hemisphere.

The orbit of Earth’s revolution is ellipse. When the Earth at a different location of orbit, each hemisphere on Earth will get different sunlight, so there will be seasons of change. The change of four seasons is not unified around the world, when northern hemisphere is summer, southern hemisphere is winter, it’s mean when a hemisphere turn to hot, another hemisphere will turn to cold. Hemisphere is the half of planet. The Earth’s axis tilt to 23.5 degree, so direct sunlight only can hit on one hemisphere. Equator is an imaginary line through the middle of the Earth, it make Earth been northern hemisphere and southern hemisphere, and it is always summer, because it always get direct sunlight.

Video:

seasons by mariama mei dong irakli.

Critical Thinking Question:
How is earth affected by movement (revolution)?
Seasons is changing because of earth's revolution and rotation, it make spring, summer, fall, and winter. The cause of seasons is earth's axis tilt by 23.5 degree. When earth is tilted to 23.5 degree and revolution, the northern hemisphere or the southern hemisphere will get direct sunlight, and another hemisphere will get indirect sunlight. When a hemisphere get direct sunlight, it will be summer, and the hemisphere with indirect sunlight will be winter. Equator is always summer, because it is on the middle and always get direct sunlight.

Reflection:
1.What did you enjoy most about this project and why?
I am enjoy most about to write the essay, because I can know what I learn from this project.
2.What was most challenging for you during this project and why?
I think write the essay is the most challenging thing for me, because I need to collect all knowledge I know about seasons and organization.
3.What new skills did you learn from doing this project?
I learn why is seasons changing,and many things I didn't know before, such as hemispheres and axis tilt.
4.Is there anything that you could have done to improve any of your work? Explain.
Yes, I should make a plan of my jobs, because I do things slowly, I need to know what should I need to do today, what can I do tomorrow.

About Me

Science is interesting.
I like cat.
Insect scares me.
Noodle is my favorite food.
I will be a nurse when I grow up.
I don't have any siblings.
My favorite color is white.
My favorite thing to do is shopping.
Watch out for insect.
I wish I can learn more about science.