THE ALPHABET. 5. Alpha, Beta and Gamma radiation. A. a Greek letter denoting the ratio of the circumference and the diameter of a circle
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1 THE ALPHABET HOMEWORK TASKS TASK 1. Greek letters appear in many expressions used in the language of science. Match the expressions with their meaning. Read the expressions aloud. 1. Gamma rays 4. Omega 3 2. Beta-blocker 5. Alpha, Beta and Gamma radiation 3. Alpha test 6. Pi A. a Greek letter denoting the ratio of the circumference and the diameter of a circle B. a beam of light with a short wavelength C. a drug used to prevent heart diseases D. the kind of fat found in oily fish ( salmon, mackerel ) E. types of radiation emitted by radioactive substances F. a test of software to see if it works properly TASK 2. Read the following Latin abbreviations and match them to the presented definitions. 1. etc. (et cetera) 5. p.a. (per annum) 2. e.g. (exempli gratia) 6. et al. 3. i.e. (id est) 7. c., ca., or cca, circa 4. i.a. (inter alia) A. through a year (yearly) B. around, about, approximately C. among other things D. for example, for instance E. and others, and co-workers F. and so on, and other things G. that is, in other words 1
2 TASK 3. Match the words to their definitions. 1. chemistry 5. element 2. matter 6. compound 3. atom 7. formula 4. molecule 8. solid A. the smallest indivisible particle of matter that can have an independent existence B. a substance which is composed of a single type of atom C. a group of atoms that are chemically bonded together D. a substance made from two or more elements that had reacted chemically with each other E. the study of matter and the changes it undergoes F. is used to describe the types of atoms and their numbers in an element or compound / NaOH, NaCl / G. a firm object or substance that has a fixed shape H. anything made of atoms and molecules and has a mass TASK 4. Read the names of chemical elements. English Pronunciation Symbol aluminium [, ælju'miniəm ] Al calcium [ 'kælsiəm ] Ca carbon [ ' ka:bən ] C chlorine [ ' klo:ri:n ] Cl copper [ ' kopə ] Cu celium [ 'hi:liəm ] He hydrogen [ ' haidridzən ] H iron [ 'aiən ] Fe lead [ led ] Pb magnesium [ mæg 'ni:ziəm ] Mg mercury [ ' mə:kjuri ] Hg oxygen [ ' oksidzən ] O potassium [ pə ' tæsiəm ] K sodium [ ' səudiəm ] Na sulphur [ ' sʌ lf ə ] S tin [ tin ] Sn titanium [ tai ' teiniəm ] Ti 2
3 TASK 5. Read the following information about SI units. Other quantities, called derived quantities, are defined in terms of the seven base quantities (e.g. m, kg, s) via a system of quantity equations. The SI derived units for these derived quantities are obtained from the seven SI base units. Examples of such SI derived units are given in the table below. Some SI derived units Name Symbol Quantity Expression in terms of SI base units 1. square metre m 2 area m 2 2. cubic metre m 3 volume m 3 3. metre per second m/s speed, velocity m/s 4. cubic metre per second m 3 /s volumetric flow m 3 /s 5. kilogram per square metre kg/m 2 area density CLASS TASKS TASK 6A. Many letters of the Greek alphabet are commonly used in mathematics and physics and in other branches of science. Here is a list of the letters and their English pronunciation. Read the Greek alphabet. Α α alpha / ælfə/ Ν ν nu /nj / Β β beta / bi:tə/ Ξ ξ xi /ksaı/ Г γ gamma / gæmə/ Ο ο omikron /ə maıkrən/ Δ δ delta / deltə/ Π π pi /paı/ Ε ε epsilon /ep saılən/ Ρ ρ rho /rə / Ζ ζ zeta / zi:tə/ Σ σ, ς sigma / sıgma/ Η η eta / i:tə/ Τ τ tau /ta / Θ θ theta / Θi:tə/ Υ υ upsilon /j :p saılən/ Ι ι iota /aı ə tə/ Φ φ phi /faı/ Κ κ kappa / kæpə/ Χ χ chi /ksı/ Λ λ lambda / læmdə/ Ψ ψ psi /psaı/ Μ μ mu /mj / Ω ω omega / ə mıgə/ 3
4 TASK 6B. You are going to practise saying the Greek letters in pairs. Look at the table and choose the Greek letters you need in the course of your studies. Name them in Polish. Ask your colleague to give the English name of the chosen Greek letter. Take turns e.g. Student A: pi, Student B: /pai/. TASK 7. Look at task 4 and write down 5 chemical elements in your notebook and read them out to your partner so that he/she can write down their symbols. TASK 8. Write the following expressions in words and the quantities they stand for. 1. m/s 2. kg/m 3 3. A/m 2 4. A/m FOLLOW UP TASKS / homework TASK 9. Complete the crossword
5 The number of letters is given in brackets. Down 1. Mg / 9 / Sn / 3 / a chemical substance that consists of two or more elements that together form a molecule / 8 / 13. Across a substance that consists of only one type of atom / 7 / anything made of atoms and molecules / 6 / 14. Ti / 8 / 4. He / 6 / 15. Na / 6 / 5. Hard, shiny element that is good conductor of heat and electricity / 5 / 16. Pb / 4 / 6. H 2 O / 5 / 17. O / 6 / 7. the smallest unit of all matter. / 4 / 18. NaCl / 4 / 8. the first on the podium / 4 / 19. Fe / 4 / 9. H / 8 / 20. Hg / 7 / 10. one of the three main forms of matter /5 / 11. a group of atoms that chemically bonded together / 8 / TASK 10. Write down these Greek letters in small letters and give examples of their application in various domains of your studies: e.g. Alpha α, sin α (mathematics). 1. Beta 2. Gamma 3. Delta 4. Theta 5. Lambda 6. Mu 7. Pi 8. Sigma 9. Tau 10. Omega 5
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