sciencs 8 grade

Kinetic theory of matter: Is a theory that is the states of mater: liquid,solid and gas.The matter is anything that takes up space and has mass,all the this you see are make of matter. Atoms: Are the particles more Little in the world this particles make up all the things that has mater and the combination of atoms of some materials make new ones like: water, metals and some reactive materials. Matter in motion: Are the cominacion of irregular particulars in material like water, the scientific Robert Brown discover this irregular particulars in 1827,whit a microscope examined water and discover pollen grains and dye particles in the water,and this is part of the KINETIC THEORY. T emperature and Heat: Temperature is the masher of a material to determined if is cold or hot and Heat is the then fer of thermal energy to a material, this proses make that the particles move faster and make the material hot.

16 : much discussion has focused on the need to drive more efficient cars and use less electricity is true, why are people concerned about energy usage? A:Because they think that the energy will get over. 17: if heat flows in only one direction, how can  both hot and cold liquids reach room temperature as they sit on a table? A:because the heat is transfer with butting something cold in something hot. 18: think about what happens to Jack and Jill in the nursery rhyme. What kinds of energy are used?How was each energy from used? A:potential energy, because is not moving at all. 19: comper the three temperature scales you learned about.How are they different?How are they similar? A:DIFFERENT:une Si a scientific scale and the other are normal scale. SIMILAR:are scale for mashurate temperature. 20: use what you know about the movement of termal energy to explain why you would place a minor burn on your arm under cool,running water? A:to transfer cold temperature to the hot une.

When selecting an energy source for heating a home, consumersthy to think about cost.Do the CHAPTER 2 SKILL ACTIVITY on pg 783 and use proportions to determine the área of the solar collector needed to heat a home. collector área =400ft  =1 living space    =1200ft  =3

leng swing   normal 7 medium 10 doble 5

Word Processing Think of a problema faced by your community such as wáter pollution.Using a wold processor,write a report describing how you would desing a robot or an ROV to help solve the problema. awnsure: problema:insegurity I prubos a robor that can the información nesesari to cath a thief on 30minutes after the stole and can chach the drug dealer in ther hiden ples and can stop the traffic on the strits.