SS3 PHYSICS a. Explain the concept of half-life, and derive the expression T⅟2= 0.693 ƛ b. Describe the change which occurs in the nucleus of a radioisotope when it undergoes transformation by emitting (i) An ð –particle (ii) a β - particle (iii) a ϒ - particle c. The half-life of uranium is 24days. Calculate the mass remaining unchanged of 0.64g of the substance after (i) 24days (ii) 48days (iii) 72days (iv) 96 days (v) 120 days Plot your answers on a graph and hence determine (vi) the mass remaining unchanged after 84days. (vii) after how many days will there be exactly 0.25g unchanged. ANIMAL HUSBANDRY In your 20 leaves assignment book, explain the implications of mandolin genetics in animal breeding TECHNICAL DRAWING Draw the following on a cardboard paper prepared as shown below: Bolt, Nut, Stud, Rivet, Thumb, Screw, Grub Screw, Allen head, Phillip head. Draw the following set screws as identified by their head: Round head, cheese head, pan head, countersunk head Draw the following nut locking devices: castle nut, slotted nut, lock plate, ring nut, wing nut and lock nut. With the aid of a drawing, identify internal thread from external thread. To be submitted on the first day of resumption AGRICULTURAL SCIENCE 1. State the meaning of agricultural insurance 2. Describe in details types of insurance policies that can be taken by agricultural operators/farmers FURTHER MATHS 1 1. Find the equation of the circle centre (-3, -2) and radius 3 units 2. Find the equation of the circle whose diameter has the end point A (4, 5) and B (-7, 4) 3. Find the equation of the circle passing through (3, -2), (4, 5) and (-6, -3) CRS 1. Explain why labour according to St. Paul should contribute to the welfare of the society 2. Who is a good citizen? 3. Identify ten duties of a good citizen MATHEMATICS 1(a) find the least integral value of x such that 4x + 3 Ξ 1 (mod 6) (b) the functions f and g are defined as f : x 3x-2 and g:x ⅟x (x ≠ 0 ). Evaluate: (i) f(-2), (ii) g(⅟2) Solve: (iii) f(x) = g(⅟2), (iv) f(x) = g(x), 2. A(-1, 1), B(1, 5) and C(3, -1) are vertices of triangle ABC. (a) Find (i) AB (ii) BC (iii) AC Hence, show that triangle ABC is isosceles. (b) If M is the mid-point of BC find BM. (c) Find the equation of AC. HISTORY 1. “The greatest ruler of Ethiopia in Modern time”. Do you agree that Menelik deserves such a description? 2. Discuss the fundamental causes of scramble for and partition of Africa BIOLOGY Using your 40 leaves exercise book write the following: a. Following the format below, write the transport media of the following organisms: Protozoa, invertebrates, vertebrates, plants. Organisms Transport media b. State the materials transported in (i) Plants (ii) animals c. State the composition of blood and the functions of each. Diagrams are necessary d. Draw and explain the lymphatic system (i) State the functions of the lymphatic system 2 e. Draw, label and describe the structure of the mammalian heart f. Draw and label the circulatory system of man. ECONOMICS 1. State any two ways by which monopolistic competition and perfect ways by which they are different 2. How can abuse of monopoly power can be controlled HEALTH SCIENCE Starvation is a threat to an average Nigerian family. Suggest ways of increasing food supply in our families. ENGLISH LANGUAGE Reference: New Concept English for Senior Sec. Schools Bk3. Topic: Holiday Assignment. Pages 213-218. Attempt all the questions LITERATURE-IN-ENGLISH 1. Study and memorise “Shall I compare thee to a summer’s Day” by William Shakespeare for oral presentation on resumption. 2. Give the plot account of “A Raising in the Sun” by Lorraine Hansberry. GOVERNMENT 1. Highlight the Coup d’etats that took place in Nigeria, since her independence till date. (Stating the coup leaders and dates) 2. State five causes of Coup d’etat in Nigerian Political history. CIVIC EDUCATION 1. Enumerate various problems associated with Nigerian Democracy. 2. What is Rule of Law? Briefly discuss the principles of rule of law? GEOGRAPHY Write briefly on ECOWAS under the following headings: a. Meaning b. Aims and objectives c. How to achieve the aims 3 d. e. f. g. h. i. Achievements of ECOWAS Problems Solutions Merits Demerits Member Nations IGBO Ndi igbo bun di amara dika ndi gbasiri ike nan di na-adi uchu n’oru. Deputa akaoru ndi igbo iri I maara FOOD AND NUTRITION Produce two items/equipment you can use to decorate a wedding cake COMMERCE 1. Explain marketing concept and marketing mix 2. Distinguish between market and marketing, market segmentation and strategies FINANCIAL ACCOUNTING Your father is a member of the board of directors of a company. In their recent meeting, the board of directors listened to the accountant discussing the uses of accounting ratio as a management tool. Your father needs more explanation from you on the following: a. Uses of ratio as a management tool b. Types of ratios used in interpretation financial statements c. The importance of working capital in financial management. CHEMISTRY Write notes on the following: a. Nitrogen and its compounds - Structure and bonding - Occurrence - Preparation of nitrogen - Physical and chemical properties of nitrogen - Uses of nitrogen b. Ammonia - Laboratory and Industrial - Preparation of Ammonia - Physical and chemical properties of ammonia - Uses of ammonia gas 4 5