Earth Before Dinosaurs: video questions, differentiated.

An engaging timeline of life on earth before dinosaurs. With a constant eye on abiotic factors (atmospheric and oceanic oxygen and carbon dioxide, temperature, continental configuration) and their impacts upon evolution. From the Hadean to the Triassic via all the charismatic species and significant events:

single-celled organisms, Rodinia, Gondwana the Cambrian explosion, trilobites. fish, Yunnanozoon, Opabinia, Anomalocaris. The Cambrian–Ordovician extinction event, GOBE. Eurypterids, Pentecopterus, Cameroceras. Algae and moss, the beginnings of terrestrial invasion. Carbon dioxide sequestered, The Ordovician ice age. Silurian: Carcinosoma, movable jaws, coral reefs, vascular land-plants, land-animals: myriapods. Devonian: sharks, placoderms, Dunkleosteus. Woody trees, Tiktaalik, Ichthyostega, insects and spiders. Carboniferous: Arthropleura, Meganeura, Diplocaulus. Terrestrial eggs with hard shells. Pangea. Permian: synapsids, sauropsids, Dimetrodon, gorgonopsians. Scutosaurus, Cotylorhynchus. The Great Dying, The Triassic: Sharivopteryx. pterosaurs., archosaurs Postosuchus…the very first dinosaurs.

Find the film by searching YouTube’s BE AMAZED channel for “What Was Earth Like Before Dinosaurs?”.

14 questions for the 35-min film. Differentiated! Both versions look very similar, but “B” version has subtle clues. Excellent subtitles: scripted, not auto-generated. Answer sheet. Very easy to mark. .doc & .pdf for all files. Link to video on all sheets.