Wednesday, September 20, 2017


                                  Milk Lab




The lab is we need to make a milk to ice creams. First, we need to pour a milk to the ziplock. Second, put the ziplock into the blue bucket, then put the ice into the blue bucket too. We need to mix it until it freezes, then we add toppings.

Question


1. Why do we add salt to the ice?
Ans. The salt makes a temperature decrease so it will be cooler. 
2. Why do we add the cookies and other things, only after the milk has frozen slightly?
Ans. Because, if we add it when milk not frozen, it will make them frozen and taste bad.
3. What are two factors that affect the freezing you think?
Ans. I think salt and pressure.
4. why do you need a bit of air in the bag?
Ans.  We need it because maybe it will help milk frozen fast.



Wednesday, May 31, 2017

                  Volume, Density and Mass

We have done experiments of volume, density and mass.This is our result.

Sample No.       Weight of Grams     Volume ml      Density g/ml

       1                            125.5g                202ml                  0.62g
       2                            136.6g                203ml                  0.67g
       3                              25g                   175ml                  0.14g
       5                             45.4g                 174ml                  0.26g
       6                            111.5g                201ml                  0.55g
       7                              246g                 250ml                  0.984g
       9                            199.8g                221ml                   0.9g
      11                            98.4g                 200ml                  0.429g
      12                           146.94g              201ml                   0.74g




 
 

Saturday, May 27, 2017

Assignment 1

               
                 Impact of society on environment 

The environment can roughly define as the sum total of all conditions and influences that affect the life and development of organisms.The environment has become one of the most important issues of our time and will continue to be well into the future. 

1.Global warming traps heat and increases the temperature.So the environment will die.
2.Air pollution makes environment die.
3.Acid rain from a factory that makes disease.

Wednesday, February 1, 2017

                          Types of clouds

Cumulus cloud

Cumulus are puffy clouds that sometimes looks like piece of floating cotton in the sky.It different from other clouds because cumulus it look like cotton and their base is flat and only 1000 meters above ground.

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Cirrus cloud

Cirrus is a genus of atmospheric cloud characterized are thin and wispy.It difference from cumulus and stratus because it above cumulus and look like thin flat cloud.

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Stratus cloud

Stratus is mean rain if it warm and snow it is cold.They look like grey huge blanket that hangs low in the sky.It difference from cirrus and cumulus because it has grey colour and rain cloud.

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Group member



Essay

The best thing in Add science class is doing Lab,Because I like to do activities and study in one class and this class is interesting and fun .And this class is quietly because everyone talk low sound and not yell.

Sunday, January 8, 2017

Speed lab ball

Observation
I observe that if the ball fall from highest height it can travel with higher meters.Ex. if we drop ball from 20 cm it will travel shorter than 40 cm and 60 cm.Because if we drop ball in the shortest height it will have less push than 40 cm and 60 cm.

Analysis

1.Describe how the ball rolls off the ramp at each height—discuss the effect of bouncing or other factors.

Ans When the ball rolls off the ramp at 80 cm height it will bouncing higher than 60 cm or 40 cm.Because if the ball smash with ground with high force it will reflect with high force too.So if it smash with high force it can be bounce in high distance.Another factors is if we drop the ball in the high height it can travel longer than short because it has push force.

2. Discuss what is the fastest speed reached and any factors that could improve this.

Ans Fastest speed reached that we doing the lab is 8.93 meters.The factor that could improve this is the ground because every ground have different friction force so the ball can be short and can go long distance.

3.  Does the ball travel in a straight line, why or why not?

Ans No,because when the ball travel maybe it will have wind and some ground it not flat.