Wednesday, September 13, 2017

Milk crystallization_Reina



Milk crystallization


1)  Why do we add salt to the ice?
     Answer To make the ice cool more and become more solids because salt can decrease the temperature of the ice.

2)  Why do we add the cookies and other things, only after the milk has frozen slightly?
     Answer It takes longer to freeze or make the milk freeze slower when the stuff is in it because it absorbs thermal energy.

3)  What are two factors that affect the freezing you think?
     Answer Movement and low temperature

4)  Why do you need a bit of air in the bag?
    Answer To help the milk move around to make contact or hit with the ice.

How to do milk crystallization

You need to bring: ice
                                container
                                test tube rack
                                milk
                                salt
                                bag
                                topping



1) Pour milk into the bag.

2) Put it into the ice, which is in the container

3) Pour salt on the ice

4) Push the test tube rack up and down and hold the top of the bag until it becomes more solid





5) Put the topping if you want and enjoy your ice cream!!!


Thursday, June 1, 2017

The Stony Lab

The Result of The Stony Lab






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        Pictures of stones   

               


The Stony Lab Question
7. How could you use the densities to identify the minerals?
Answer: Yes, because every minerals have their own masses, values, and  densities, which are different and specific.If they have the same densities ,they are the same type of minerals. So, Their densities are easily to identify them. 

8.Which one is more useful is to identify the minerals, density or color?

Answer: Density is more useful to identify the minerals than color because sometimes the stones' color can be the similar and hard to identify.For example, Stone number 1 has the similar color as stone number 2. stone color can also vary in different conditions such as under the sea it maybe gain some moss over time or it can also be stained by mud etc.and the gemstones are not included because their colors are constant.

Wednesday, May 24, 2017

Writing assignment

Writing assignment

  • Acid rain
         Acid rain is a rain that is unusually acidic.It has a pH value of 4.0.It is formed when pollutions called oxides of sulfur and nitrogen, contained in power station smoke, factory smoke, and car exhaust, react with the moisture in the atmosphere.It kills insects and fishes as well as causes damage to buildings and having impacts on human health.
450x375_acidrainpathway_3-28.png (450×450)
  • Oil spill
          An oil spill is the outflow of petroleum or oil onto the surface of the water.It is a form of pollution by human activity.The oil may come from tankers and offshore platforms.The oil can blind the animals when it gets into their eyes or death if they get the oil into their bodies which causing their bodies temperature to be really low.
220px-Oiled_Bird_-_Black_Sea_Oil_Spill_111207.jpg (220×165)


  • Water pollution
          Water pollution is when wastes and chemicals pollute the water to become unsafe to the animals that need water to survive.It occurs through many causes such as volcanoes, animal wastes, garbages from people and chemicals from factories.

88355-849x565-g52rubbishbeach.jpg (849×565)