Friday, January 25, 2019

Theory vs. Law (7th / 8th)



SC.7.N.3.1 Recognize and explain the difference between theories and laws and give several examples of scientific theories and the evidence that supports them. (Also assesses SC.6.N.3.1 and SC.8.N.3.2.)
Also Assesses

SC.6.N.3.1 Recognize and explain that a scientific theory is a well-supported and widely accepted explanation of nature and is not simply a claim posed by an individual. Thus, the use of the term theory in science is very different than how it is used in everyday life.



SC.8.N.3.2 Explain why theories may be modified but are rarely discarded.






scientific theory is a well-substantiated explanation of some aspect of the natural world that has been gained by going through the scientific method and repeatedly tested and confirmed through observation and experimentation.


THEORIES = EXPLAIN AN EVENT OR PHENOMENON
Phenomenon- A fact or situation that is observed to exist or happen, or explanation .

CELL THEORY


FRANCISCO REDI'S MEAT EXPERIMENT 

SPONTANEOUS GENERATION 
CELLS COME FROM PRE-EXSITING CELLS 
REDIS MEAT EXPERIMENT 
SPONTANEOUS GENERATION



THEORY OF PLATE TECTONICS 




 ATOMIC THEORY
SC.8.P.8.1 Explore the scientific theory of atoms (also known as atomic theory) by using models to explain the motion of particles in solids, liquids, and gases.






SC.8.P.8.7 Explore the scientific theory of atoms (also known as atomic theory) by recognizing that atoms are the smallest unit of an element and are composed of subatomic particles (electrons surrounding a nucleus containing protons and neutrons).



NEBULAR THEORY
BIG BANG THEORY






scientific law is a statement that describes what scientists expect to happen every time under a particular set of conditions. For example, the law of gravity states that all objects in the universe attract each other. Unlike a theory, a scientific law describes an observed pattern in nature without attempting to explain it. Both scientific theories and scientific laws are developed slowly through repeated observation and experimentation.

LAW =DESCRIBES A PHENOMENON WITHOUT EXPLAINING IT.

Newton's Law of Universal Gravitation 



KEPLER'S LAW OF PLANETARY MOTION 



LAW OF SUPERPOSITION 

 LAW OF CROSS CUTTING - 



Monday, January 21, 2019

Mitosis - Meiosis (Cell Division)

















ASEXUAL REPRODUCTION 


MITOSIS(CELL DIVISION)  IS A FORM OF ASEXUAL REPRODUCTION 
A CELL DIVIDES TO CREATE TWO IDENTICAL DAUGHTER CELLS WITH THE SAME NUMBER OF CHROMOSOMES 



SEXUAL REPRODUCTION
 (USES GAMETES (SPERM/EGG)  FORMED DURING MEIOSIS)