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Crater Impacts D. Crowley, 2009. Crater Impacts To make a prediction, and investigate this fairly Thursday, January 21, 2016.

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Presentation on theme: "Crater Impacts D. Crowley, 2009. Crater Impacts To make a prediction, and investigate this fairly Thursday, January 21, 2016."— Presentation transcript:

1 Crater Impacts D. Crowley, 2009

2 Crater Impacts To make a prediction, and investigate this fairly Thursday, January 21, 2016

3 Adaptation How was a Tyrannosaurus Rex adapted to help it survive?

4 Adaptation T-Rex adaptations… Body with hollow bones Clawed feet Long stiff tail Long powerful legs Large eyes Large powerful jaws with long, sharp, conical teeth Two-fingered hands with sharp claws Large head

5 Adaptation How was a Triceratops adapted to help it survive?

6 Adaptation Triceratops adaptations… Forward pointing horns Cheek protuberance Short, wide snout horn Toothless beak Short tail Short legs 5-toed feet Bulky, barrel- shaped body

7 Extinction What do you think caused the extinction of the dinosaurs? Was there an atmospheric / climatic change which the dinosaurs could not adapt to quickly enough? Did something happen to the plants so the herbivores had nothing to eat, and the food chains broke down? Did disease wipe them out? Did an asteroid hit the Earth? We chemicals leached from the soil which poisoned the dinosaurs?

8 Dinosaur Extinction Most scientists believe large scale climate change was the cause of the dinosaur extinction – possibly caused by a giant meteorite crashing into the Earth As the environment changed the dinosaurs were unable to adapt, and died out

9 Dinosaurs & Mammals Why is it that cataclysmic event which caused the dinosaurs to become extinct did not also cause the extinction of mammals (which were also around at the time)?

10 Dinosaurs & Mammals Most scientists believe large scale climate change was the cause of the dinosaur extinction – possibly caused by a giant meteorite crashing into the Earth As the environment changed the dinosaurs were unable to adapt, and died out As the Earth finally began to warm up again mammals, which are able to regulate their own body temperature, became dominant

11 Evidence What evidence is there for a giant crater?! Clearwater Lakes (Canada)Arizona (USA) Wolf Creek (Australia) Aorounga (Chad) Manicouagan (Canada) Chicxulub (Mexico)

12 Craters Do these craters only happen on Earth? Lunar craters also exist…

13 Crater Size What affects the size of a crater? Craters have varying sizes (from dust particles to kilometers across), due to: - Composition of rock (rocky / metallic / carbon based) Speed of impact Angle of impact Mass of material impacting

14 Theory What object could you use as a meteorite? What will you use to represent the surface of the Earth? How can you make this a fair test?

15 Theory Consider the following: - What are you going to investigate? How many times will you have to do it? How will you record your results? How will you make it safe? What do you think you will find out? What are you going to record? When you have considered these points produce a results table…

16 Results Produce a results table, specific to your experiment

17 Meteorite Strike Collect your data – look for patterns as you collect your data to check you are on the right path…

18 Results What do your results show? Graph your results Have your produced good evidence to support your original ideas, or have you discovered something new?


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