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Molly and Charli Geography!
Transcript of Molly and Charli Geography!
The Grand Canyon
Our Research Question
The Grand Canyon is an amazing wonder of the world, a natural phenomenon and anyone who comes across this wonder would be surprised.
Of the beauty and complexity of the Grand Canyon. Although we will never know EXACTLY how the Canyon was formed, we are still aware of dramatic changes in our world today and finding how the Grand Canyon was formed might just be one of them.
Our research question is How was the Grand Canyon formed? We hope to find out what happened to the Canyon and if erosion affected the formation in these rock canyons... Today with our modern technology we can find out what really happened when it was formed.
The Grand Canyon
The Grand Canyon is located in America, Arizona to be exact. It's 5 or 6 million years old and was founded in 1983 and resumed National Park status in 1919. The Grand Canyon attracts over 5 million visitors each year and thrives on tourist's and local's going to see it.
How was it formed??
The Grand Canyon was formed 6 million years ago and was mostly formed by erosion and rivers running through the canyon. Scientists think that the process of the Canyon being formed make a word D.U.D.E
Deposition- Sediment, layers of sand and dirt hardened and turned into rocks
Up lift- Earth's crust collided and lifted the rock layers upwards
Down Cutting- The Colorado river carved layers like a knife
Erosion- Water and Wind carried sediment from the bottom widening at the walls.
All of these processes create the Grand Canyon
The limestone on the on the outer ring of the Grand Canyon is 230 million years old. That means that the limestone was there before the Grand Canyon itself. The three main types of rocks at Grand Canyon are sandstone, shale (or mud stone), and limestone. Metamorphic rocks are rocks that have been changed under great heat and pressure. These rocks have been around for centuries the ones on the bottom being the oldest rocks-
Sedimentary rocks are made of smaller pieces
Precambrian Basement Rocks
The oldest rock is Schist and it's 2 billion years old.
The rocks in the Grand Canyon
THANK YOU FOR WATCHING!
FROM MOLLY AND CHARLI
Factors that make the Grand Canyon and how they work together
Some factors that make the Grand Canyon what it is today are....
Erosion- Erosion is the act of the weather, water, heat and pressure forming the Canyon today,
Weathering- when the weather affects the rock formation, making it softer and looser. Easier to erode
Rivers- The Grand Canyon had a river flowing through it and still does. The Colorado river is 1450 miles long (2334km)
These factors have some similarities and some differences but they all work together. How?? These factors all contain a type of water, rain, river and flood. These factors are sourced by water ( the river) contain water (rain) and use water (weathering) if they happen. Meaning if ANY of the water sources did not exist, the Grand Canyon could not form.
How everyone is affected by this natural phenomenon
The Grand Canyon attracts over 5 million people each year, this meaning that the population will rise. When the population rises the job industry and economy will too.
Although the big population will have it's disadvantages too like - the over crowding and over population of Arizona. The public transport is over crowded and over populated as well as dirty.
More disadvantages are : Traffic ( from where you are to where you need to go), and how the city is brimming with tourists. Although it may seem that the overpopulation is a bad thing it can also lead to more pleasant things like more job opportunities and the chance for small businesses to thrive.
For example the Park Rangers contribute to the Grand Canyon and since the Grand Canyons attraction rate is increasing every year. They need to hire more of them keep the park protected. If the park wasn't protected the Grand Canyon would be a big pile of earthy coloured rubble.
Changes in the Earth's Surface because of the Grand Canyon
Charli & Molly
OUR POSED QUESTIONS ANSWERED
How the Grand Canyon is linked to the weather?
How many theories on how the Grand Canyon was formed are there??
How is the Grand Canyon linked to the weather?
RAIN? LIGHTNING? THUNDER? RIVERS AND FLOODS? All these components are connected to the Grand Canyon and how it was formed, but why are they involved? The Grand Canyon was formed by weather and all things involved in it... Rain formed the distinct patterns on the Grand Canyon today but the floods and rivers complete it.
How many theories are there on how the Grand Canyon was formed?.
There are many theories on how the Grand Canyon was formed from scientific discoveries till ancient legends and stories like our own dream-time ones. How the Grand Canyon was formed is still an mystery but with our modern day technology we can find out what really happened to form all the edges and curves of the wonder... The Grand Canyon.
Some changes that have occurred because of the Grand Canyon is the massive crater in the Earth that this phenomenon left after it was formed. This pit is 1 mile (16 km)deep and and 18 miles wide (28.9 km) and 277 miles long (445.7km). Another change that affects the grand canyon is the land that is used for tourists which is affected from the rubbish which people throw o the grand canyons surface and because of that the Grand Canyon needs to adapt to this condition.