A+ NEW WITH COMPLETE SOLUTION
5-step Method - Ans 1.Observa on
2.Ques on
3.Hypothesis
4.Experiment
5. Evalua on
Hypothesis - Ans Educated guess, must have a variable that can be proven true or false, must
be innovated- has 3 variables: dependent, independent, cofounded
theory - Ans isn't false, but has been disproven by tes ng or replica on
2 types of observa on - Ans 1. Qualita ve- not proven true- fake science
2. Quan ta ve- real science- proven true and backed up with data
What makes up the universe - Ans Energy and Ma+er
What process releases bond energy - Ans Combus on
Combus on - Ans breakdown of 2 par cles that release energy. Chemical reac on that causes
energy to be released.
Whats in an atom - Ans proton, electron, neutron
, Mass defect - Ans the difference between the mass of an isotope and mass number- when you
don't have equity
Energy- Mass Equivalence - Ans e=mc2-- rest mass energy of an object
Sources of Energy - Ans 1.coal
2.wind
3.solar
4.hydro
5.geothermal
6.biofuels
7.oil
8. natural gas
9. nuclear
Conserva on of Energy - Ans energy cannot be created or destroyed, it may be transformed,
but the total amount never changes
Radioac vity - Ans a steady but unpredictable process, found in the nucleus of an atom and
fakes place en rely
Bq - Ans the ac vity of a quan ty of radioac ve material that decays in which one nucleus per
second
Rela ve me vs Absolute Time - Ans r= chronostra c
a= chronometric, obtained via radiometric da ng methods