Our Investigation To what extent is Bradshaw’s model accurate over a small stretch of the river We have learned what Bradshaw’s model says about how rivers change from source to mouth We know that his model is mostly correct We wanted to find out whether it is also...
Antarctica and the Arctic Antarctica and the Arctic are both polar ecosystems, but they are slightly different The Arctic is usually defined as the region north of the Arctic Circle – about 66° north Average summer temperatures are less than 10°C and winter...
Global Circulation System Winds are large scale movements of air caused by differences in air pressure Differences in air pressure are caused by temperature differences between the equator and the poles Winds move from the areas of high pressure to the areas of low...
Structure of the Earth At the centre of the Earth is the core The inner core is made of solid iron and nickel The outer core is liquid at approximately 6000°C Around the core is the mantle This is semi-molten rock that moves very slowly at approximately 4000°C The...
Earth’s Changing Climate Climate change is any significant change in the Earth’s climate over a long period; it constantly changes Earth is 4.5 billion years old; scientists divide this into different geological time periods, we are currently in the Quaternary period...
Landscapes A landscape comprises of all the visible features of an area of land This includes physical features and human features A landscape with more physical features, such as mountains or forest, is described a as natural landscape A landscape with more human...
Geomorphic Processes Weathering is when rock is broken down Mechanical weathering is the breakdown of rock without changing its chemical composition Freeze-thaw weathering occurs when rocks are porous (contain holes) or permeable (allow water to pass through) Water...
Ecosystems An ecosystem includes all the biotic and abiotic parts in an area, and it is the interdependence of climate, soil, water, plants and animals A food chain shows what eats what and a food web shows lots of food chains and how they overlap The organisms can be...
Tropical Rainforests The climate is the same all year round without any definite seasons It is warm with average temperatures of 27°C because they are near the equator where the sun is overhead all year round Rainfall is very high, around 2000mm per year with daily...