Tuesday, 8 July 2014
Attitide of a vet
Tuesday, 13 May 2014
Setting SMART Goals
Wednesday, 9 April 2014
Science Notes(which type of matter expands the most)
Science Notes(ball and ring experiment)
Why is the metal ball able to pass through the metal ring after heating the ring?
When the ring is heated,it expands in size and the ball which is still the same size as before is able to pass through the expanded metal ring.
I had this question in my mind after watching and learning the ball and ring experiment.When you heat the ring,does it mean that the whole ring expands or just the hole on the middle that expands.My guess is that the whole ring expands as it cannot be the hole that only expands.If only the hole expands,then the proportionate of the hole to the whole ring is wrong.Also,when you heat up the ring,th whole ring gains heat and not only the ring.that is how I came to the conclusion tha when you heat up the ring,it is the whole ring that expands and not only the hole in the middle of the ring.
Scence Notes(bimetallic strip)
Wednesday, 2 April 2014
Science Notes(what happens when you increase the size of the capillary tube)
Scientific principles have the knack of explaining abnormal events that occur around us. A liquid, like water, ascending up a narrow tube naturally is not considered as a typical occurrence. Since, water and other liquids in general flows with the gravitational forces, it requires specific circumstances and physical effect to flow against the forces of gravity. This scientific phenomenon is called capillary action. The transportation of water from the roots to leaves of the tree happens due to the underlying principles of cohesion and transpiration.
Practical use of capillary action is evident in all forms of our daily lives. It makes performing our tasks efficiently and effectively.
Tuesday, 11 March 2014
Cce(job ambitions)
Sunday, 9 March 2014
Soil results for soil experiment(Science)
Introduction: Different types of soil have different size of soil particles
The Aim: To find out if the type of soil affects the amount of water collected in the beaker after 2 minutes
Experimental Design:
Procedures:
1. Set up the 3 experiment as the above design, 1 with top soil, 1 with clay and the other with sand
2. Collect 3 measuring cylinder and measure 150ml of water in each of them
3. Pour all 3 measuring cylinders of water into the 3 experiments at the same time. Start the stopwatch when you started pouring the water into the experiments
4.after 30 seconds , stop the stopwatch and take out the beaker from the experiment.
5, Measure and write down the amount of water collected in the beaker for the 3 experiments
6. Repeat steps 1 to 5 another time and find the average between the first and the second time to make sure the results are reliable
The results:
Analysis and Discussion of Results:
The sand allows the most amount of water to pass through. Why? There is the most air holes in the sand. What does this show you? The particles of sand is the largest, so when the particles are bigger, there is a larger empty space which is taken by air. When water is poured, the water pushes the air out and creates a way for the water to pass through
Conclusion
Task 1:Clay is the best soil to be used in sand bags to build the levee. As we want least water to pass through. From the experiment, clay allows the least amount of water to pass through that is why it is the best soil to be used in the sand bag to build a levee
Task 2: Section B should be the place to build the levee first. As the soil there is clay, it allows the least volume of water to sip into the ground to absorb water while the top soil and sand allows more water to sip into the ground. So when water comes in,more water can sip into the top soil and sand as there is more air holes to allow water to go into it, thus we need to build the levee at section B first
Area for Further Research and Study:
Which soil is used for which plants?
A cactus should be grown on the sand, as the soil should be porous and spread over a deep layer, showing that it need that soil which allows the most water to pass through
Credits to:
Jiang Mohan(1I)- Brought some materials and carried out the experiments
Shu Hong(1I)- Helped Carry out the experiments
Kieren(1I)- In charge of the time and helped cleaning