* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Amie Bickert - ColonialAcademyScience
Auriga (constellation) wikipedia , lookup
Corona Borealis wikipedia , lookup
Corona Australis wikipedia , lookup
Cassiopeia (constellation) wikipedia , lookup
Canis Major wikipedia , lookup
Star catalogue wikipedia , lookup
Dyson sphere wikipedia , lookup
Astronomical spectroscopy wikipedia , lookup
H II region wikipedia , lookup
Star of Bethlehem wikipedia , lookup
Type II supernova wikipedia , lookup
Perseus (constellation) wikipedia , lookup
Future of an expanding universe wikipedia , lookup
Aquarius (constellation) wikipedia , lookup
Cygnus (constellation) wikipedia , lookup
Stellar kinematics wikipedia , lookup
Timeline of astronomy wikipedia , lookup
Corvus (constellation) wikipedia , lookup
Amie Bickert November 2, 2009 Arnfeldt November 2, 2009 Bickert Astronomy-Life Cycle of a Star 1. Standards 3.4.7.7.D. Describe essential ideas about the composition and structure of the universe and the earth’s place in it. 2. Objectives SWBAT define and use the vocabulary words relating to the life cycle of a star with 80% accuracy as measured by teacher observation. SWBAT make a diagram of the life cycle of a star with 80% accuracy as measured by the teacher observing the diagram. 3. Materials and Equipment Flow map—thinking map 4. Procedures A. Introduction: o T. and Ss will quickly review the importance of the tilt in the Earth. We will then discuss that we are now moving on to stars and their life cycle. B. Anticipatory Set/ C. Motivation: T. will explain that just like humans, stars go through a similar life cycle. Have Ss name the life cycle of a human, conception, birth, life, death. D. Sequence of Lesson Teacher Models: Vocabulary words Nebula- a large cloud of gas and dust spread out in an immense volume. Protostar- earliest stage of a stars life White dwarf: blue-white core of the star that is left behind cools forms this. Supernovas: an explosion of a suergiant Neutron star: the remains of high-mass stars. Black holes- an object with gravity so strong that nothing, not even light, can escape. Guided Practice: T. and Ss. read section 3 Lives of Stars together as they are read T. and Ss. will complete a thinking map, flow chart. Step 1: Nebula is formed Step 2: In the densest part of the nebula gas and dust are pushed together and when it becomes heavy enough to form a star it is called a protostar. Step 3: The dust and gases become so dense and hot that nuclear fusion starts and a star is born. Step 4: How long a star lives depends on its mass. The small mass star will burn slower and thus last longer, while the larger mass star will burn quickly and thus burn out faster. Step 4: Life span: a star with less mass than the sun lives for about 200 billion years. Medium stars (sun) live for about 10 billion years. Large massed stars about 10 million years. Step 5: Death. After a star runs out of fuel, it becomes a white dwarf, a neutron star, or a black hole. This completes the life cycle of a star. Death of stars Ss and T. will draw a diagram of the dying stars. Small or medium sized star—red giant, planetary nebula, white dwarf, black dwarf High mass star—supergiant, supernova, black hole, or neutron star Independent practice: As an assessment Ss will describe in their own words the life cycle of a star, in a few sentences. If a star is smaller than the sun will it burn more or less quickly then the sun? E. Closure: F. Assessment/Evaluation: T. will grade the responses to the above questions.