Thursday, December 6, 2012

Changes in materials experiment

Do you know what is a reversible change and irreversible change ?
Reversible change is like a physical change.
Irreversible change is like a chemical change.
 When sugar is being melted it turns into a caramel.
The one in above is a reversible.
When paper is being burnt ash is formed.
The one in above is the example of irreversible change.
If you see this video you will understand more about reversible change and irreversible change


http://www.youtube.com/watch?v=DbOTWi6k4g8&feature=player_embeddedWhen sugar is being melted it turns into a caramel.
The one in above is a reversible.
When paper is being burnt ash is formed.
The one in above is the example of irreversible change.

Sunday, September 30, 2012

Cells

Do you know what is a cell ?
A cell is a small organism inside our body.
In an animal cell there is a vacuole,nucleus, cytoplasm,and cell membrane

In a plant cell there is a vacuole,nucleus,cytoplasm,chloroplasts,cell membrane,and cell wall.

humans make cells in a process called cell division .

This a project we did in school about cell division.In a bottle we mix sugar and yeast.
In another bottle we just use sugar.

Monday, May 14, 2012

science fair reflection

I was really happy to join the science funfair.There are so many games such as tuc-of-war, bursting a balloon,spelling bee,written quiz
,jigsaw puzzle,crossword puzzle,race to the trash bin,recycle the bottle.I was really happy than every day. 
   

annual project reflection

In our annual project i made a monas .I am first really confused to
 make a Monas. First ,we made the stairs.Second,we made the base.
Third,we made the body of the Monas.Fourth,we made the
top of the Monas.I thought it was hard but it was really easy. 
   
Electric circuits contain Energy source,wire,output device,switch.


We use switches to make or break an Electric Circuit.


When a Switch is Turned On the Electric Circuit is closed, meaning the current can flow, and the bulb will Glow.


When a Switch is Turned Off the Electric Circuit is Open, meaning the current cannot flow, and the bulb will not Glow.


Monday, March 19, 2012

separating mixtures

Do you know how to separate mixtures?
Separating Mixtures is a process of separating different things of state. These are some examples: sieving, decanting, filtration.                                                                                                                                                                                                                                                                                                   

Physical Changes

Do you know what is physical change?
Physical Change is a change which no new materials are formed.
The texture,shape,and size will change,but still it is made of the same material.The material used cannot be changed back to its original form.These are the examples of physical change:Inflating a balloon,
breaking a glass,cutting a cloth, molding a clay,melting a butter. 


                                              Inflating a balloon





Breaking a glass



                                                   Cutting a cloth 



Molding a clay


Melting a butter



physical change video


Tuesday, January 31, 2012

Pollution

Do you want our world to be clean?

So do these things:
Throw rubbish to the right place.
Do not smoke.
Do not burn rubbish and forests.


Those are the reasons for air pollution ,water pollution, soil pollution.



Soil Pollution

                                                   Air Pollution


Water Pollution