Article: An antenna (plural antennae or antennas), or aerial, is an electrical device which converts electric power into radio waves, and vice versa. It is usually used with a radio transmitter or radio receiver. In transmission, a radio transmitter supplies an electric current oscillating at radio frequency (i.e. a high frequency alternating current (AC)) to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception, an antenna intercepts some of the power of an electromagnetic wave in order to produce a tiny voltage at its terminals, that is applied to a receiver to be amplified.

Question: What process associated with antennas produces a high frequency alternating current?
Ans: transmission


Article: Plants and various other groups of photosynthetic eukaryotes collectively known as "algae" have unique organelles known as chloroplasts. Chloroplasts are thought to be descended from cyanobacteria that formed endosymbiotic relationships with ancient plant and algal ancestors. Chloroplasts and cyanobacteria contain the blue-green pigment chlorophyll a. Chlorophyll a (as well as its plant and green algal-specific cousin chlorophyll b)[a] absorbs light in the blue-violet and orange/red parts of the spectrum while reflecting and transmitting the green light that we see as the characteristic colour of these organisms. The energy in the red and blue light that these pigments absorb is used by chloroplasts to make energy-rich carbon compounds from carbon dioxide and water by oxygenic photosynthesis, a process that generates molecular oxygen (O2) as a by-product.

Question: From what ancient oxygen producing plant are chloroplasts descended?
Ans: cyanobacteria


Article: The main centre for technical training in Swaziland is the Swaziland College of Technology which is slated to become a full university. It aims to provide and facilitating high quality training and learning in technology and business studies in collaboration with the Commercial, Industrial and Public Sectors. Other technical and vocational institutions are the Gwamile Vocational and Commercial Training Institute located in Matsapha and the Manzini Industrial and Training Centre (MITC) in Manzini. Other vocational institutions include Nhlangano Agricultural Skills Training Center and Siteki Industrial Training Centre.

Question: There is an educational facility in Manzini within Swaziland known by the acronym MITC, what does it stand for?
Ans: Manzini Industrial and Training Centre


Article: Samkhya school espouses dualism between consciousness and matter. It regards the universe as consisting of two realities; Puruṣa (consciousness) and prakriti (matter). Jiva (a living being) is that state in which puruṣa is bonded to prakriti in some form. This fusion, state the Samkhya scholars, led to the emergence of buddhi (awareness, intellect) and ahankara (individualized ego consciousness, “I-maker”). The universe is described by this school as one created by Purusa-Prakriti entities infused with various permutations and combinations of variously enumerated elements, senses, feelings, activity and mind.

Question: Which Hindu school stresses dualism between consciousness and matter?
Ans:
Samkhya