Wednesday, 14 February 2018

Electric Charge

1. Infer why did you rub the balloon on your sweater? predict what might happened if you simply touched the balloon to your sweater instead of rubbing it.
ans : to get the balloon charged, the balloon will not charged
2. Key concept why do you think the balloon interacted the way it did with your sweater with the stream of water?
ans : because there are electric charged in the balloon



Wednesday, 10 January 2018

Map Group Project

Start in front of m203 room
East 15 steps
North 5 steps
Lower level
East 12 steps
South 35 steps
West 20 steps
South 8 steps
West 12 steps
South 16 steps
West 7 steps
The end is.......


Thursday, 14 September 2017

crystallization of milk Lab

         1.why do we add salt to the ice?
         - To keep the ice still cold and not melt
         2.why do we add the cookies and other things, only after the milk has                frozen slightly
         3.what are two factors that affect the freezing you think?
         - Ice and Salt
         4. why do you need a bit of air in the bag?

Free photo: Mappy Potter

Monday, 3 July 2017

A stone lab is about measuring stone's mass by putting in a water. 
first, we put water in beaker 400 ml then put the stone. How much that that water is more than 400, it is the stone's mass

  simple number             weight            volume            density
                                 7                             100                  245                 0.40816
                                 6                              50                   110.9              0.545085
                                 3                              45                   20.92              2.15105
                                 2                              50                   137.5              0.36363

Wednesday, 14 June 2017

Science Lab

 It's about rock lab
It has many kinds and weight of rocks.
I have to find the density of rocks by calculating it.

Wednesday, 24 May 2017

The impact of society on the environment.

1.Acid rainThe effects of acid rain are most clearly seen in environments, such as rivers, lakes, and ocean where it can be harmful to fish and other wildlife. 
2.Oil spills When an oil slick from a large oil spill reaches the beach, the oil coats and clings to every rock and grain of sand. If the oil washes into coastal marshes, mangrove forests or other wetlands, fibrous plants and grasses absorb the oil, which can damage the plants and make the whole area unsuitable as wildlife habitat.
3.Air pollutions  Air pollution can harm us when it accumulates in the air in high enough concentrations. Millions of Americans live in areas where urban smog, particle pollution, and toxic pollutants pose serious health concerns.

Thursday, 3 November 2016

acid rain

                    rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulfur and nitrogen oxides, which combine with atmospheric water to form acids.


        Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

         Acid rain has many ecological effects, but none is greater than its impact on lakes, streams, wetlands, and other aquatic environments. Acid rain makes watersacidic and causes them to absorb the aluminum that makes its way from soil into lakes and streams.

        Because nitrogen oxides are created in the process of burning coal and other fossil fuels, some power plants are changing the way they burn coal. A great way to reduceacid rain is to produce energy without using fossil fuels. Instead, people can use renewable energy sources, such as solar and wind power.