Wednesday, September 20, 2017

Crystallization of milk

         


1)  why do we add salt to the ice?
ans: So the ice doesn't into water

2)   why do we add the cookies and other things, only after the milk has frozen slightly
ans: to make cookies and other things freeze with milk easily

3)  what are two factors that affect the freezing you think?
ans: salt shaking

4)  why do you need a bit of air in the bag?
ans: to make milk turn frozen and move around easily

Wednesday, June 14, 2017

Lab




Sample number
weight
volume
Density
3
28.5
35
0.814
6
110
50
2.2
5 big
115
41
2.805
5 small
45.5
22
11.159
2
136
50
2.72
X
146.6
58
2.528
1
245.5
69.5
3.532
Calculate the density of each of your mineral samples. How could you use the densities to identify the minerals?  
Ans: Density can be measured with the structure of the minerals. Different minerals will have different density.

Key Concept. Would density or color be more useful in identifying a particular mineral? Explain.
Ans: Density will be the same for the same minerals but color doesn't 







Thursday, May 25, 2017

Impact of society on environment

          Here are some example of the impact wich is made by people or society to the environment. The first one on my list is cutting trees. Trees are important for all living things, but things that are made of wood is also important for people. So what we can do is don't cut trees for an unnecessary purpose. Next up is air pollution, as human, we polluted the air by giving out carbon dioxide from car vehicle engine, factory and burning stuff.Last on our list is oil spilt. An oil spilt is the released of liquid petroleum hydrocarbon into the environment. This affects the animal life that lives in water which can cause death. That's it for the blog!!!!!!!!

Wednesday, February 1, 2017

Clouds


Cirrus                                                                                 Stratus                                                          


                                                              Cumulus

Cumulus clouds is Puffy and have flat bases. Located in low level.

Stratus clouds are low-level clouds, are formed by rising thermals. It looks like a freezing drizzle or snow grains

cirrus clouds are high level clouds.It is thin and wispy,.

Tuesday, January 10, 2017

Ball Bearing Lab JayJay



Procedure:
1.         Put the ramp against the seat of a chair.  Place the ramp and chair so that the ramp points towards the hallway.  Have your teammate on the other end of the hallway. 
2.         Place the ball bearing at the top of the ramp.
3.         Lift the ramp 20 cm and release the ball bearing
4.         Time how long it takes to travel  5 meters.
5.         See how far it will go..
6.         Repeat the experiment three times for each height then do 40 cm, 60 cm, and 80 cm.



Height
Time to travel 5 meters
Distance travelled
20
 5 second
 1500 cm
20
 6 second
 1860 cm
20
 7 second

40
 7 second
 900 cm
40
 9 second

40
 7 second

60
 3 second
 1440 cm
60
 8 second

60
 3 second

80


80


80




Observation: I Have observe that the higher the starting point of the ball is, the shorter the ball travel. But not all the time it is like that.



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

           Ans; So when it start at 20 cm, the ball did't bounce much so it can go peaty far, the higher the ball is released the shorter the distance the ball travel, it is because the effect of bouncing. If it is a bouncing it would be a good effect on it but this is a plastic ball. 


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

          Ans: The fastest speed is 3 second /300 cm
        
       
3.         Does the ball travel in a straight line, why or why not?

            Ans: No because the surface of the ground is not flat, and ball can roll anywhere although the surface of the ground is flat.