Aswitch is used to start the flow of current in an electrical circuit, and electrical power including lights etc can then be switched on. Given these facts, what are on when there is flow of current in an electrical circuit among the following options: - energy - lights - engine - cycles - brakes - waves - water - Vibrates
lights
------
Sonar is used to find the location of an object, and periscopes are still useful, despite the sonar and electronic sensors of modern submarines. Given these facts, periscopes are used to find out what about objects among the following options: - microscopic - density - location - weight - Light - energy - observe it - age
location
------
Passive immunity lasts only as long as the antibodies survive in body fluids, and antibodies are administered to the patient in a process called passive immunization. Given these facts, how long can antibodies protect the body among the following options: - As long as antibodies survive - Slowing the transfer of heat - For a set time - by keeping them warm - it protects them - Into elderly years - As long as the human survives - A compound that donates proton
As long as antibodies survive
------
If soil is permeable then water easily flows through that soil, and the increase in permeability is caused by the formation and expansion of ice in the soil. Given these facts, water can flow easily through soil where what has formed and expanded among the following options: - bogs - rock - Sand - ice - moss - dam - peat - stem
ice
------