2a2 Science Blog: STD( Aceson, Anthony, Jovian, JiaSheng, Jin Xiang

2a2 Science Blog: STD( Aceson, Anthony, Jovian, JiaSheng, Jin Xiang

HBL 24/5/11

2) Reflect on this:
How has/will human activities in the Amazon regions affect the Allomerus decemarticulatus ants?
Human has been destroying the habitat of the Allomerus decemarticulatus ants as a result from deforestation for urban development. This will make the ants go without a home and eventually die. Soon, it will become extinct. In addition, by cutting down all the trees, we are destroying the traps made by the ants and soon they will have nothing to eat and lead to death.
3) Answer the following questions:

a) From the extract, identify the different symbiotic relationships and cite the organisms involved. Clue: There are at least 3 types of relationship.
mutualism. The trees and the Allomerus decemarticulatus ants.
Predation. The insects flying around and the Allomerus decemarticulatus ants.
Competition. The trees fight for sunlight.


b) For each type of relationship you have identified in (a), name another example of a pair of organisms depicting that relationship in nature.
Mutualism- clown fish and sea anemone.
Predation- tiger and deer
Competition- lion and hyena

cool experiment(walking on cornstarch!!!)

science fun facts

	The fastest computer in the world is the CRAY Y-MP C90 supercomputer. It has two gigabytes of central memory and 16 parallel central processor units.
	The heaviest human brain ever recorded weighed 5 lb. 1.1 oz. (2.3 kg.).
	The deepest part of the ocean is 35,813 feet (10,916 meters) deep and occurs in the Mariana Trench in the Pacific Ocean. At that depth the pressure is 18,000 pounds (9172 kilograms) per square inch.
	The largest cave in the world (the Sarawak Chamber in Malaysia) is 2,300 feet (701 meters) long, 980 feet (299 meters) wide, and more than 230 feet (70 meters) high.
	The hottest planet in the solar system is Venus, with an estimated surface temperature of 864 F (462 C).
	The ears of a cricket are located on the front legs, just below the knee.
	The first electronic digital computer (called ENIAC - the Electronic Numerical Integrator and Calculator) was developed in 1946 and contained over 18,000 vacuum tubes.
	The leg muscles of a locust are about 1000 times more powerful than an equal weight of human muscle.
	The cosmos contains approximately 50,000,000,000 galaxies.
	There are between 100,000,000,000 and 1,000,000,000,000 stars in a normal galaxy.
	Sound travels about 4 times faster in water than in air.
	Scientists have discovered that copper pollution of the atmosphere occurred about 2500 years ago. This was discovered by analyzing ice cores from Greenland. The pollution was attributed to the Romans who used copper for military purposes and to produce coins.
	Hydrofluoric acid will dissolve glass.
	In a full grown rye plant, the total length of roots may reach 380 miles (613 km).
	In a full grown rye plant, the total length of fine root hairs may reach 6600 miles (10,645 km).
	A large sunspot can last for about a week.
	If you could throw a snowball fast enough, it would totally vaporize when it hit a brick wall.

reflection for term 3

this term is a very fast one but at the same time a fun-filled and enriching one. Although we did not have many lab lessons where we do experiments, i learnt a lot of things during lessons in class. for example, light and ecology. Even though light have been taught in primary school, i have been introduced to a more in-dept knowledge of all those topics.
in term of test, i must say that i am both satisfied and unsatisfied. Satisfied because i managed to score a A1 for it and unsatisfied because i got a low A1 and is one of the lowest in class. I hope i can do well for my EOYs.

reflection for term 2

In term 2,we learned on how to balance chemical equations, acids,bases and salts and the human reproductive system. i feel that chemistry is the challenging one as i find it more difficult to understand the topic. although the human reproductive system has a lot to remember, chemistry requires us to remember and also apply our knowledge into it. this term, i only scored 24/40 for my test. this is far away from my targetted A1. i feel very disappointed as i did very badly for this test. although i had other commitments, i should not have neglected on the test. i hope that i can learn from my mistake and start revision earlier to as to be more well prepared for the test next time.

reflection of term 1

Although chemistry taught in term 1 was interesting, I found it challenging and difficult and did not clear my doubts when the test arrived, and thus did not do as well as I wanted. I feel that in the process of learning, one should not be shy and ask when in doubt of anything that he do not know so as to learn well. Most importantly, I feel that I should set a goal for myself, a target score so as to strive for better results. Apart from that, I should also work on my attitude and be more hardworking when it comes to memorizing notes. i hope that in term 2, i will learn from this lesson and pull up my socks and achieve better grades.