online science games how to keep things warm

Everything that we use or consume - food, clothes, vehicles, tools, petrol, furniture, medicines, books, toys, and the infrastructure of electricity, roads bridges, and buildings are obtained from resources on this earth. The only thing one gets from outside is the sun's energy and even ..

The addition of certain pollutants like the carbon dioxide gases increases the temperature of the earth. These gases remain close to the surface of earth, forming an insulating layer. The surface becomes hot due to the solar radiations. This radiation is normally reflected back into the space. How..

Study of the compounds of carbon is organic chemistry. They form the basis of living organisms and the things around u..

Global Warming - The addition of certain pollutants like the carbon dioxide gases increases the temperature of the earth. These gases remain close to the surface of earth, forming an insulating layer. The surface becomes hot due to the solar radiations. This radiation is normally reflecte..

Any thing that is able to do work possesses energy. Energy is the capacity to do work. Energy is measured by the amount of work that a body can do. Therefore, SI unit of energy is also jou..

Introduction - We see a variety of objects in the world around us. However, we are unable to see anything in a dark room. On lighting up the room, things become visible. That is, light is required to see things around us. Thus light can be defined as the external cause responsib..

Question: Name any four environmental problems faced by today's world. Answer: Four environmental problems being faced by today's world are: 1) Population explosion 2) Pollution 3) Global warming 4) Soil erosi..

Question: What is the principle used in a pressure cooker? Answer: The pressure in the enclosed volume above the liquid reaches much greater values than atmospheric pressure, thus the temperature of boiling water within the cooker is greater than the normal boiling temperature. Hence, ..

Question: Explain the three R's in the conservation of environment? Answer: The three R's refer to Reduce, Recycle and Reuse. Reduce: Use less electricity by switching off unnecessary lights and fans, save water by repairing leaky taps, do not waste food. Recycle: Materials made of plast..

Nature of Light - Light is a form of energy and can be transformed into other forms of energy. You would have observed the path of 'a beam of light' inside a room. This beam is nothing but the scattered light produced by the dust particles. Beam of light becomes invisible if the room is dust free. ..