2021 WAEC Physics Practical Specimen

Question 1 Two metre rule Retort stand and clamp Thread ( about 250 cm long) Stopwatch/clock A weighing balance; Split cork. Question 2 (1) Ray box with illuminated objects (cross wire) (2) Convex lens(f = 15cm) (3) Screen (4) Metre rule. (5) Lens Holder. Question 3 Accumulator (2×1.5v) Ammeter (0 – 1A) Crocodile clip A 2 ohms Q resistor Key Constantan wire (about 1m long) Connecting wires. Keep refreshing this page for updates on answers as we receive them. Also study extensively and around the above questions. Reading on your own and understanding Physics generally will make the exam and other exams easier for you. Although this is officially correct, it is not meant to make you relaxed and stop reading. Remember you are going to the university where you will not get help like this in your exmas so dont supplement this for study time. Goodluck!

Specimen A: Cervical Vertebra Mammal Location of Specimen A These are endoskeleton that is found in the neck region of mammals in man, they are seven in number. The first cervical vertebra is called the atlas while the second is called the axis, the third to seven bones are the normal cervical bones. Characteristics of Atlas Specimen A C1 It has a flat and broad transverse process The neural Spine is very short or Absent. The centrum is Absent It has a vertebraterial canal for the passage of blood vessels Characteristics of Atlas Specimen A C2 It has a broad and flat centrum It has a vertebraterial canal It articles with the atlas through the odontoid process Characteristics of Normal Specimen A C7 The C7 may process cervical ribs C7 formen may transmit the posterior vertebral Vein ( if doubled) Functions Of the Axis It allows the head turned easily, I.e twisting of the head It has a pair of the short transverse process There is a large neural canal and neural arch A large cylindrical centrum is present Function of Atlas It permits the nodding of the head Specimen A Cervical Image Specimen A Cervical Axis Specimen B: Thoracic Vertebra Mammal Location: The thoracic vertebra is found in the chest region in man, they are twelve in numbers. Characteristics of Specimen B The specimen B has a long and prominent neural spine when projects upward and backward It has a pair of the short transverse process There is a Waec Biology practical specimen