Earth Science Midterm Review Part 1

If it is 12pm in NY, what time is it in California?

• 9am
• 10am
• 2pm
• 3pm

On a test, you are given the following question: Which NY State landscape region is located at 44⁰ N and 75⁰ W?
Which page of the Earth Science Reference Tables would you use to answer this question?

• Page 2
• Page 3
• Both page 2 and page 3
• Page 5

Which NY State landscape region is located at 44⁰ N and 75⁰ W?

• Allegheny Plateau
• Erie-Ontario Lowlands
• Tug Hill Plateau
• Adirondack Mountains

At which latitude would an observer on Earth find the altitude of Polaris to be 37 degrees?

• 37 degrees North
• 37 degrees South
• 55 degrees North
• 55 degrees South

You are attempting to identify this index fossil. Which page of your Earth Science Reference Tables would you use?

• 3
• 6
• 8
• 13

During which time period was this particular species alive and most abundant?

• Cambrian
• Ordovician
• Silurian
• Permian

Index fossils are useful to geologists for correlating rocks because each species is widely distributed and became extinct after a _______________ geologic existence 

• long
• short

Which would be considered the best index fossil?

• A
• B
• C
• D

Which two elements are most useful for the radioactive dating of recent organic remains?

• C¹⁴ and N¹⁴
• K⁴⁰ and Ca⁴⁰
• U²³⁸ and Pb²⁰⁶
• Rb⁸⁷ and SR⁸⁷

A bone sample contains only ¹∕₄ of its original radioactive C¹⁴ content. How old is the bone sample?

• 1 C¹⁴ half-life
• 2 C¹⁴ half-lives
• 4 C¹⁴ half-lives
• 8 C¹⁴ half-lives