Wednesday, 13 September 2017

1)  why do we add salt to the ice?
because make it cold and hard to melt
2)   why do we add the cookies and other things, only after the milk has frozen slightly
it makes milk have tastier
3)  what are two factors that affect the freezing you think?
air and 
4)  why do you need a bit of air in the bag?
space makes all milk touch ice

Thursday, 1 June 2017

    sample number                weight gain                 volume                 density\

            3                                 25.6                             23                      1.6                          
            5                                45                                15                      3.3
            2                                138                              50                      2.7
            12                              3                                  47                      0.9                          
            6                                110.1                           50                      2.2
            11                              18                                16                      4
            9                                19.3                             75                      2
           7                                 258.3                            66                     4
           1                                 125.2                           53                      2.3
                                                               lab project

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


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

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.

  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