Another Symphony of Science video but about Evolution this time. The two other SOS videos I have posted are here and here.
Symphony Of Science…
I was browsing the Symphony Of Science website and thought I would put one of the songs on here. They are videos of scientists talking about “Life, the Universe and Everything” but put to music. A program called Auto-Tune is used to turn normal spoken English into sung lyrics. It is the same technology that …
Continue reading Symphony Of Science…
Dinosaur Symphony…
Here is a Symphony of Science video/song about dinosaurs. . Questions… To which taxonomic group did dinosaurs belong? For how many years did dinosaurs dominate the planet? When did the Jurassic Period start? How fast was the object that probably wiped out the dinosaurs travelling when it struck the Earth?
Forces v Energy (Part I)…
A thing that often causes a little confusion is the distinction between energy (the capacity to do work – measured in joule) and forces (which are simply pushes or pulls – measured in Newton). It is very important to read exam questions very carefully to avoid using the wrong one. Energy There are three forms …
Continue reading Forces v Energy (Part I)…
Forces v Energy (Part II)…
The next thrilling instalment in the ‘Forces v Energy‘ series – who will win? Well, neither because they are totally different things so they cannot have any sort of competition or conflict. It would be like saying ‘Custard v Empathy’ – which will win? Forces Forces are measured in Newton. Forces cause objects to speed …
Continue reading Forces v Energy (Part II)…
Plant Cells v Animal Cells
It would be very helpful if you could draw a labelled diagram of a typical animal cell and of a typical plant cell. You probably won’t be asked to draw one in an exam but knowing that you can will give you the confidence to answer questions about cells. Everything above should be fairly familiar …
Continue reading Plant Cells v Animal Cells
A Specialised Plant Cell…
A root hair cell is a typical plant cell in that it has a cell wall and a large vacuole, but it has a special shape to increase its surface area making it very effective at absorbing water. It doesn’t have chloroplasts because it is underground where there is no light. The root hairs emerge …
Continue reading A Specialised Plant Cell…
A Specialised Animal Cell…
Eukaryotic cells contain organelles like a nucleus or mitochondria. Prokaryotic cells include things like bacteria that do not have separate structures within them – that is why they are so much smaller. Signals are carried around the body by nerve cells (more properly known as neurones or neurons). The myelin sheath accelerates the impulse (the …
Continue reading A Specialised Animal Cell…
A Typical Plant Cell…
The moss cell is a typical green plant cell cell membrane cytoplasm nucleus cell wall vacuole chloroplast Questions…
A Typical Animal Cell…
A cheek cell is a typical animal cell. With a light microscope you can clearly see the cell surface membrane, nucleus and the cytoplasm. You would probably struggle to identify the mitochondria. The cell membrane… forms a thin covering to the cell controls what enters and leaves the cell allows oxygen and dissolved food substances …
Continue reading A Typical Animal Cell…