ok well i finished most of my take-home exam. and i subtracted everything i don't think and i will get a 72. i kind of want 85+ on this exam so please help
most questions include a graph so i cant really ask them. but here is what i can, so please help, i will chose best answer right away
1. Uranium-238 that crystallized at the same time Earth formed has undergone approximately how many half lives of radioactive decay?
A.four half-lives
B. one half life
C.three half lives
D. two halflives
2. (this is a writing question so it doesnthave choices) What environment is limestone found in?
3.According to Geolog History of New York State page in your reference tables,the inferred latitude of New York State 360 million years ago was closest to:
A.45degrees south
B. the North Pole
C.where it is now
D. the equator
partb - what direction has it moved since?
thats all i got please help me
most questions include a graph so i cant really ask them. but here is what i can, so please help, i will chose best answer right away
1. Uranium-238 that crystallized at the same time Earth formed has undergone approximately how many half lives of radioactive decay?
A.four half-lives
B. one half life
C.three half lives
D. two halflives
2. (this is a writing question so it doesnthave choices) What environment is limestone found in?
3.According to Geolog History of New York State page in your reference tables,the inferred latitude of New York State 360 million years ago was closest to:
A.45degrees south
B. the North Pole
C.where it is now
D. the equator
partb - what direction has it moved since?
thats all i got please help me