NST1502 Assignment 4 PORTFOLIO (ANSWERS) 2023 (791148)

NST1502 Assignment 4 PORTFOLIO (ANSWERS) 2023 (791148).100% CORRECT questions, answers, workings and explanations..... SECTION A Have you ever wondered how traditional healers discover their medicines? And how about western medical doctors? How do they discover their medicines? Do a bit of research and write a two-page report on how traditional healers and western medical doctors discover their medicines. Pay particular attention to the PROCESS they follow in order to discover new medicines.. In the previous section we referred to animal diversity briefly. In the current section we explore in detail characteristics of humans which are part of chordates. There are many careers related to the human body and health. Do a little research and state 20 different careers and their job description. (1) What is the first stage of a stars life. A. Nebula collapsing under itself B. Supernova of old star C. Planets collapsing D. Fusion of atoms (2) A protostar is what is formed when a Nebula’s gas and dust come closer together. A. True B. False (3) After the protostar gets hot enough nuclear fusion reactions fuse together helium and hydrogen A. True B. False (4) A main sequence star is? A. A star that shines steadily due to nuclear fusion B. Several stars close together C. A star with planets orbiting D. A Nebula that skips a protostar and is instantly turns into a star. (5) The bigger the star the longer it will live A. True B. False (6) What happens when a star the size of our sun runs out of Hydrogen? A. It uses helium as fuel B. It uses carbon as fuel C. It goes supernova instantly D. It turns green (7) Stars the size of our sun swell to a blue super giant after they run out of fuel. A. True B. False (8) After nuclear reactions cease a star the size of the sun collapses in on itself to form a white dwarf star. A. True B. False (9) What happens in the first stage of a star much bigger than the sun’s death? A. It swells to a red super giant B. It swells to a blue super giant C. It goes supernova D. It forms a white dwarf star (10) What happens when a star bigger then the sun’s core collapses? A. It forms a white dwarf star B. It forms a neutron star C. It goes supernova D. It expands to a red super giant (1) What is the theory of relativity? (2) What are the special and general relativity theories? (3) What is the difference between the special and general theories of relativity? Discuss the historical beliefs about eclipses in relation to your culture. In your culture, what does an eclipse of any type mean to your context? How do these beliefs relate to the indigenous knowledge system? Are there still practices in your culture that are related to eclipses? SECTION B QUESTION 1 Fill in the missing words in the questions/statements below: 1.1 The first step of the scientific method is referred to as the __________. (2) 1.2 We call a step-in scientific method that takes many forms such as seeing, hearing or feeling, ____________. (2) 1.3 Scientists analyse and interpret data in order to figure out how those data inform their _____________ and _____________. (4) 1.4 It is the job of science to collect all plausible explanations and to use scientific testing to filter through them, retaining ideas that are supported by the_____________. (2) [10] NST1502/101 21 QUESTION 2 2.1 Talk to at least three people who speak different languages and find out the following: 2.1.1 What is the equivalent word for “universe” in their mother tongue? Write down the word and specify the language. (6) 2.1.2 Find out what they learned from their parents/grandparents about the stars and other heavenly bodies. (3) 2.2 Define “theory of relativity”. (1) 2.3 What are the two theories of relativity? (2) 2.4 What is the difference between the two theories of relativity? (2) (14) QUESTION 3 3.1 Critically discuss the transport mechanisms across the membrane. (10) Total: [34]