The formation of a levee
1. During low flow, the load that is being carried by the river is dropped onto the river bed which raises the height of the bed. 2. During times of flood, water flows out more easily over t...
Notes tagged with "jc geography".
1. During low flow, the load that is being carried by the river is dropped onto the river bed which raises the height of the bed. 2. During times of flood, water flows out more easily over t...
The water cycle has four main stages: evaporation, condensation, precipitation and collection. 1. Heat from the sun causes water to evaporate from the oceans and other water bodies. Water a...
- Two plates collide or separate - Magma rises from the mantle to the vent - This is called an eruption - Magma wells from the magma chamber and reaches the surface where it cools and hard...
2 types of plates. Continental plates - under land. Oceanic plates - under ocean. 3 types of plate movements Separating plates - drag apart. Colliding plates - pushed together Sliding...
Plates: large slabs of earth's crust Plate boundaries: where plates meet Crust: thin, solid layer all over the surface of the earth. Mantle: thick layer of molten and semi-molten rock be...
1. Plates separate or collide and magma rises up through a gap called a vent. 2. The magma reaches the surface cools and hardens . This is called lava. 3. After many eruptions many layers o...
- Earthquakes -sudden shaking of the earth caused by the movement of the crust. - Tremors -vibration. - Focus- the point under the surface where the earthquake happens. - Faultline -the line...
Pangea - 250 million years ago all the continents were connected as one large land. Continental drift - the movement of continents. Crust - thin outer layer - made of solid rock . Plate...
1. The earth's core heats the magma above. As a result, the magma rises slowly upwards towards the crust. 2. As the magma rises it then begins to cool. Subsequently, this cooling results i...
There are 3 types of rocks. Igneous - Igneous is made when magma rises from the mantle. - Under the surface ,it slowly cools and hardens. - This is known as intrusive rocks . - Example Gr...