Dynamic Earth . Earth's Structure - Interactive model. In the early part of the 20th century, geologists studied the vibrations (seismic waves) generated by earthquakes to learn more about the structure of the earth's interior.
They discovered that it is made up of these distinct layers: the crust, the mantle, and the core. The Earth's Interior Crust. Earth's layers - DK Find Out. Currents in the mantle can push hot, molten rock up through the surface of the Earth.
Where it breaks through the crust, there is often a violent explosion called a volcanic eruption. These eruptions create mountains called volcanoes. Hot rock inside the Earth melts into a liquid called magma. Sometimes, currents in the magma push upward toward the surface, creating an underground fountain called a magma plume. What On Earth: Crash Course Kids #10.1. Structure of the Earth! - Nat Geo Kids. Get ready to dig deep, gang, and join us on a fascinating journey to the centre of the Earth… The secrets buried inside our planet are revealed by recording and studying things called seismic waves.
Caused by things like earthquakes, explosions and the movement of our oceans, there are two types of seismic wave – a shear wave, which won’t travel through liquid; and a pressure wave, which moves through both liquid and solids. Weathering and Erosion: Crash Course Kids #10.2. Volcano facts - Nat Geo Kids. Is it just us or is it getting hot in here, gang?
Prepare to delve into the depths of the earth and uncover these seriously hot volcano facts – if you dare! 1. Put simply, a volcano is an opening in the Earth’s surface. Landforms, Hey!: Crash Course Kids #17.1. Hawai’i Volcanoes National Park, USA - virtual tour. Big Changes in the Big Apple: Crash Course Kids #38.1. Big Changes in the Big Forest: Crash Course Kids #38.2. Human impact - World Land Trust. Climate 101: Deforestation. Amazon Deforestation - BBC News. Deforestation - World Land Trust. Save the rainforest! - Nat Geo Kids. When 12‐year‐old Asha Kirkpatrick and her sister Jia, 10, found out a big cereal company used palm oil – one of the biggest reasons for deforestation in the world – they started a campaign to get them to reconsider.
The sisters, from Bedfordshire, UK, started an online petition and got around a million signatures, which led to the cereal company deciding to only use sustainable palm oil in its products from now on. So cool! Rainforest hero. Coastal Erosion - Classroom - BTN. Living along the coast can be pretty cool.
There's sun and sand and surf and all those other great beachy things. Except when this happens. Last week, a couple of storm systems gave parts of the East Coast an absolute pounding. SYDNEY RESIDENT: I haven't ever seen this place ever like that since I've been here 30 years. This is Collaroy Beach in Sydney and as you can see the waves didn't leave a lot of beach. Sydney storm: erosion swallows 50 metres of Collaroy, Narrabeen beaches. With the waterfront properties on Pittwater Road in Collaroy already teetering on the edge - the sunroom of one house has already fallen onto the sand - residents fear their homes might not be able to withstand another forecast battering on Tuesday night.
Tony Cagorski said he lost another two to three metres off his multimillion-dollar property at Collaroy in Monday night's king tide. "The back sunroom is gone, the verandah is gone," he said on Tuesday morning. "We have lost about 15 metres of our yard. "Thank God the sun is shining and the waters have receded. " Furniture was also washed away and glass windows were smashed, exacerbating the damage caused in the weekend's wild weather, which clawed away about 10 metres of his property. Before and after: Severe storms hit Sydney's northern beaches - ABC News (Australian Broadcasting Corporation) Waves of up to 8 metres hit Collaroy, washing backyards into the ocean and destroying a swimming pool.
A unit block and seven homes were evacuated from the area which one local described as a "disaster zone". A huge low pressure system combined with a king tide to cause the widespread coastal destruction. Aquatic Centre and Sports Precinct - Tara Anglican School for Girls. The existing 25m outdoor pool and associated buildings will be out of action as soon as the builders arrive on site.
This means that there will be no swimming, diving or water polo on site until the new facility is completed in 2022. This is an ambitious project, seeking to bring together the tennis courts, gymnasium, main oval and new Aquatic Centre together into a single interconnected precinct. Because of this, there will be times when access to these existing facilities may be more difficult than it currently is. Once a builder has been appointed we will know more, but our current thinking is that we will still have use of the courts and the gymnasium but to access them we may need to ‘go the long way’.