Understanding Challenge: Life development on Earth Skills Challenge: Using the timeline information on the front of the worksheet answer the following questions: 1. You belong to the species (a type of plant or animal) homo sapiens. a) When did they appear? Homo‐sapiens appeared in … (clue: look at box 17) b) Where did they appear? Homo‐sapiens appeared in….. (clue: look at box 16) 2. What was the Permian mass extinction? The Permian mass extinction was.. (clue: Look at box 9) 3. When did the dinosaurs die and what killed them? The dinosaurs died _____ million years ago due to an ____________ hitting the earth. 4. Evolution is still going on, life on earth is still changing and will look very different in another million years. Draw an image of what you think humans will look like in one million years’ time. Understanding Challenge: 1. Complete the table below looking at the fossils. Use the word bank below each column to help you answer the question. What does it look like? What does it feel like? What do you think it is? Fossil 1 Fossil 2 Fossil3 Fossil 4 Match to one of the Rough/smooth Colour? images on the board Sharp/jagged Big/small Mollusc, ammonite Hard/soft Round/uneven Plant, Insect Grainy/smooth Dirty/clean Flat/bumpy 2. Using the information on the board and what we have discussed in class, answer the following questions: a) Why are fossils useful to scientists? Fossils are useful to scientists because they can tell us what life was like on _________ millions of years ago. They show us the different __________ and __________________ that have lived on earth and some that have even been extinct, such as d______________. b) How is a fossil created? Complete a flow diagram on how a fossil is created. Key Words Defined: Evolved – to grow and develop over time. Algae – A tiny, single celled plant (you would have to look under the microscope to see one) Adapt – To change Mass Extinction – Most or all of life on earth is destroyed Mammals – A warm blooded animal. (humans are mammals).