Define convection.

Biodiversity park is an ecological assemblage of species that form self-sustaining communities on degraded/ barren landscape, e.g. Uttamrao Patil Biodiversity Park, Gureghar, Mahabaleshwar

1. Herbarium is a dried plant specimen that is pressed, treated and mounted on a standard size sheet in order to preserve it.  [Note: Herbarium is a collection of dried, pressed...

1. Biodiversity is the degree of variation of life forms in an ecosystem.  2. (i) The loss of biodiversity is an moral and ethical issue.  (ii) Biodiversity helps to maintain stability in an...

Botanical gardens are places where plants of different varieties collected from different parts of the world are grown in vivo in a scientific and systematic manner.  1. Greenhouse is a structure with...

The different tools used for maintaining biodiversity records are as follows:  1. Flora: It is the plant life occurring in a particular area at a particular time.  2. Monograph: It describes any...

The minimum energy required by a satellite to escape from Earth ‘s gravitational influence is the binding energy of the satellite.

In Chemistry, q is -ve if heat is given out by system to the surrounding. q is +ve if heat is absorbed by the system from surrounding. W is -ve is work is...

1. Consider liquid being heated in a vessel from below.  2. The liquid at the bottom of the vessel is heated first and consequently its density decreases i.e., liquid molecules at...

1. Heating and cooling of rooms: The mechanism of heating a room by a heater is entirely based on convection. The air molecules in immediate contact with the heater are heated up. These...

Free convection Forced convection i. When a hot body is in contact with air under ordinary conditions, like air around a firewood, the air removes heat from the body by a process called free...