chapter1&2

I just finished baca-ing the 2 topics for tommorrow's exam. and im gonna write it back based on what i baca just now to test wheiter i can remember it or not.

There's a 7 scientific investigation method, the 1st one is identifying the problem, identifying the variables, making a hypothesis, controlling the variables, planning the investigation, carrying out the investigation and writing a report. Identifying the problem means understand the problem and stating the problem by asking questions. Forming a hypothesis means making a general statement about the relationships between manipulated and responding variables, must be tasted to prove its validity. Planning an experiment means planning a suitable and systematic method, determining the apparatus, time and situation. Controlling the variables means to control the manipulated, responding and constant variables. The last one is, carrying out the investigation, means to do experiment by having collection of data, intepretation of data and conclusions.


Body coordination means ability to move one's movements properly. It invovles two system, it is nervous system and endocrine system. The importance of body coordination is enables the body to carry out various activities, protect the body from external stimuli and ensures health of the well-being of our body.

The human nervous system composed 2 system, it is CNS and PNS. Theres a 2 parts in CNS. It is brain and spinal cord. Brain controls all actions and spinal cord controls reflex actions.Theres also 2 parts in PNS the 1st one is somatic nerve system, somatic nerve system controls all voluntary actions. It invovles 2 things in the somatic nerve system, it is cranial cord, found in the head and spinal cord, found in the body. The 2nd part in the PNS is autonomy nerve system, autonomy nerve system controls all involuntary actions. It also involves 2 things, the first one is sympathetic nerve system and parasympathetic nerve system.



Thats all i know guys ;O