Earth Science Reference Table Review

How old is a bone that has 12.5% of the original amount of radioactive carbon-14 remaining?

According to the graph, what is the half-life of this isotope?

The surface temperature of which sample increased at the slowest rate?
Options: water, basaltic sand, copper pennies, iron fragments

The average rate of temperature change, in Fahrenheit degrees per hour, between 6 a.m. and noon was

What is the density of this material?

How many joules are required to evaporate 1 gram of boiling water?

Which pie graph correctly shows the percentage of elements by volume in Earth's troposphere?

New York State’s Catskills are classified as which type of landscape region? Options: mountain, plateau, lowland, plain

The surface bedrock at which location is most likely to contain this fossil (Bothriolepis)?
Options: Ithaca, Old Forge, Albany, New York City

Which ocean current warms the climate of northwestern Europe?