1. Prior learning –Our sun is a star Key words –Sun, Star, black dwarf, white dwarf, red giant, supernova, nebulae, dust, hydrogen, helium Unit 11 – Science and Humanity Sept Title: Find out the stages involved in the life cycle of a star

2. Describe long-term changes that have occurred in our universe to our solar system and earth Know the gaseous components of the sun (C) Describe the life cycle of a star in simple terms.(C) Explain in detail the life cycle of a star(C/B) I have stated that the sun is made from hydrogen gas I have described in simple terms the stages involved in a stars life I have explained in more detail the stages involved in a stars life and stated possible outcomes. By the end of this lesson we should be able to: Success Criteria: Unit 11 – Science and Humanity

3. Starter Unit 11 – Science and Humanity Can you name any patterns of stars (constellations)??

4. Unit 11 – Science and Humanity

5. The end of the life cycle of really massive stars is different to that of massive stars. After a really massive red giant collapses in a supernova explosion, it leaves a star so dense that not even light can escape its gravitational pull. This is called a black hole! Some scientists believe that there are black holes at the centre of galaxies. If light cannot escape a black hole, then how can a black hole be observed? Unit 11 – Science and Humanity

6. Use these words below to complete the life cycles of different stars: nebula small nebula large nebula white dwarf star like our Sun red giant neutron star massive red giant star larger than our Sun supernova Unit 11 – Science and Humanity

7. Comparing the life cycles of stars nebula small nebula large nebula white dwarf star like our Sun red giant neutron star massive red giant star larger than our Sun supernova

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10. This causes the ‘nebula’ to collapse. Gravity causes a dust and gas cloud to condense into a smaller volume. As the nebula collapses, temperatures and pressures inside the nebula increase. When the temperature and pressure are great enough nuclear fusion starts. Eventually gravity and the outward pressure of escaping energy is balanced. At this stage, it is called a star. Plenary: What is the correct order for these sentences about how a star is formed? Birth of a star Unit 11 – Science and Humanity

11. Describe long-term changes that have occurred in our universe to our solar system and earth Know the gaseous components of the sun (C) Describe the life cycle of a star in simple terms.(C) Explain in detail the life cycle of a star(C/B) I have stated that the sun is made from hydrogen gas I have described in simple terms the stages involved in a stars life I have explained in more detail the stages involved in a stars life and stated possible outcomes. By the end of this lesson we should be able to: Success Criteria: Unit 11 – Science and Humanity