Best 8Th Grade Quizzes Online

Plants and animals both are very important for the survival of human beings as well as they are important for balancing the ecosystem. Human beings get most of the things from plants and animals like food, clothes, air, etc. But slowly human beings h

Combustion plays a very important role in the day-to-day life of human beings. The chemical process in which a substance reacts with oxygen to give off heat is called combustion. The original substance of the chemical reaction is called fuel and the

Natural resources are those which we get from nature. Coal and petroleum are common examples of natural resources. There are two types of natural resources one is inexhaustible and another one is exhaustible. Inexhaustible resources are those resourc

Metals and nonmetals are materials that show different properties. Metals are malleable, ductile, sonorous, hard, lustrous, and good conductors of heat and electricity. Nonmetal is not malleable, not hard, nonductile, non-lustrous, and a bad conducto

Clothe is one of the basic needs of the human being and it is made of fibers, it may be natural or synthetic. Synthetic fibers are man-made fibers. Synthetic fiber is a polymer that is made of small units of chemical substances. Nylon, Polyester, and

Microorganisms are those organisms that can't be seen by the naked eyes. There are four types of microorganisms bacteria, fungi, protozoa, and algae. Some microorganisms are helpful for human beings and some are harmful to human beings and animals. A

Crop production and management are very important for animals and human beings because human being and animal get their food from crops. At the end of the Paleolithic era, farming started and after that, it continues in the present age. When the same