Wednesday, 24 May 2017



                                          writing assignment

acid rain

acid rain very effects with the environment. tree died destroy
building and damage for the animal.  normal rain water =
5.6 pH  This is because of CO2 which dissolves in rainwater and forms carbonic acid (a weak acid) but when ph then normal it call acid rain
acid rain make from bad gas likes sulfur dioxide from power station .power station made gas and the gas is go to in cloud then come to acid rain




Wednesday, 8 February 2017

                                                 essay

best thing of this year i like science lab because it was fun and interesting. the best lab i like fish lab . i hope next year I have to get higher score in science exam of kru gary
                                               type of cloud

cumulus        Cumulus is white fluffy clouds mean good Image result for cumulus

cirrus    made from ice crystal stay in high atmosphere
Image result for cirrus
stratus  Sheets of low, grey clouds that bring light snow or rain
Image result for stratus clouds

Sunday, 8 January 2017

                                                        effect of gravity on speed

Introduction
Gravity provides a constant acceleration (force) on an object.  The effect is changed by using ramps at different angles. In this lab, you will find the optimal angle to maximize acceleration on a ball bearing so it travels the farthest and/or the fastest.  Friction is the opposing force created by the surface interactions.  Whenever something rolls due to a force, friction will oppose this force and slow it down.

analysis
  1.Describe how the ball rolls off the ramp at each height—discuss the effect of bouncing or other factors.
  from result of lab i think ball in bouncing high when it fall from higher

2.Discuss what is the fastest speed reached and any factors that could improve this.
i think if it have medeim high ramp it will be go fastest because gravity it make sense of high

3. Does the ball travel in a straight line, why or why not?
  no some time ball is not go in straight line because the floor is not smooth 

Thursday, 3 November 2016

                                                                            acid rain
Image result for causes of acid rain
  
Acid rain is a rain or any other form of precipitation that is unusually acid, meaning that it possesses elevated levels of hydrogen ions (low ph). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of surfer dioxide and nitrogen oxide, which react with the water  in atmosphere to produce acids.Nitrogen oxides can also be produced naturally by lightning strikes, and sulphur dioxide is produced by volcanic eruptions. The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and weathering of stone buildings and statues.