The History of the theory of Plate Tectonics
Where did the Theory of Plate Tectonics come from? How did it evolve? What started it all off and how did new evidence change the theory?Visit our Members Section - Over 90 teaching resources that are...
4 Marras 20229min
What are the mechanisms that drive Plate Tectonics?
What drives the movement of the Earth's huge lithospheric tectonic plates? In this episode, we talk about mantle convection currents and slab pull - the too well-accepted theories for what is driving ...
28 Loka 20225min
Sand - why do we see such variations?
Why do we see such variation in the sand around the world - white, yellow, black and green, and more! What can the grains of sand tell us about the age of the sand? And how can sand on an island th...
21 Loka 20227min
Missing time - what are unconformities?
Earth scientists in the field recognize that a sequence of rocks may be missing layers of rocks that represent a period of time. We call those unconformities. In this episode, we discuss what an unc...
14 Loka 20227min
Seeing inside the Earth
How do we know about the inside of the Earth? Using earthquake waves and visitors from out of space (meteorites), we can see the layers and work out the chemistry of the layers that make up our plan...
7 Loka 20226min
Trilobites - King of the fossils!
Trilobites are amazing fossils! They can be used for accurate correlation between sedimentary layers because they evolved rapidly, lived in almost all marine environments, and have exoskeletons that ...
30 Syys 20225min
The Earth's layers explained
The Earth is made up of layers - and we can define those layers in two ways - as being chemical (crust, mantle, core) or mechanical (lithosphere, asthenosphere, mesosphere, outer core, inner core). ...
23 Syys 20228min
What is a glacier?
What is a glacier? How is it formed? Where can I find them and how are they classified?Support the show
16 Syys 20227min
