Science Archives - Neb Student

The Universe | SEE Notes

The universe

The Universe | SEE Notes Universe: The huge space which contains everything that exists is called the Universe. The earth, the sun, the moon, planet, stars, atmosphere, etc. Whatever we see are in the universe. The breadth of the universe is about 105 light-years. Solar system: The family of the sun including all planets, satellites, … Read more

Metal | SEE Physics Notes

Metals | SEE Physics Notes Metal: The element which is the conductor of heat and electricity, and forms (+) ve ion by losing electrons. Example: Al, Fe, Cu, etc. Mineral: Definition: The minerals are the impure form of metal compounds with more amount of impurities. Examples: Clay, Cryolite, etc. The extraction of metals from mineral … Read more

Chromosomes and sex determination | SEE Notes


chromosomes and sex determination Chromosome: Definition: The chromosome is a thread like structure composed by protein and DNA, and present inside the nucleus. Features: a) It caries hereditary character generation to generation. b) It has two arms called chromatid, and both the chromatids are joined at the centromere, etc. Diagram: Types of chromosome: a) Sex chromosome. … Read more