Wednesday, 14 June 2017

Skill Practice continued

Calculate the density of each of your mineral samples. How could you use the densities to identify the minerals?
   Ans. The density will not change if you calculate density again it will be the same as the first time. 
KeyConcept Would density or color be more useful in identifying a particular mineral? Explain your answer.
   Ans. Density would be more useful to identify a particular mineral because many types of rock have the same color.

Thursday, 1 June 2017

Thursday, 25 May 2017

impact of society on environment

1.Global warming is the rise in temperature of the Earth's atmosphere. This caused melting of ice caps and rising of sea level.
2.Rain acid happens when sulfur dioxide mixed with nitrogen oxides into the atmosphere and react with water. This effect Eart by makes water acidic and cause them to absorb the aluminum.
3.Air pollution is a mixture of solid particles and gases in the air. This effect our health and they cause damage to animals and plants too.