Chapter 14 (History of Life/ Fossils)

Question 1

What was the atmosphere of early earth like?

Answer 1

-Very Hot
-Water Vapor, Nitrogen, Carbon Dioxide

Question 2

What was the weather like on early earth?

Answer 2

-Rainstorms with Lightning
-Volcanically Active

Question 3

There was a huge amount of what type of energy?…

Answer 3

Kinetic

Question 4

What is the earliest period of the earth known as?

Answer 4

The Hadean eon

Question 5

When did early earth form?

Answer 5

4.6-4.4 billion years ago

Question 6

What are the 2 ways we learn about the age of earth and it’s layers?

Answer 6

-Relative Dating
-Absolute Dating using radio metrics

Question 7

Define Relative Dating

Answer 7

The science of determining the relative order of past events without determining their absolute age

Question 8

Define Absolute Age

Answer 8

The TRUE AGE of a rock or fossil, telling scientists how many years ago an event happened

Question 9

Why isn’t all rock data found in the earth?

Answer 9

Because when the mid-oceanic ridge comes up, it slides under sediment deposits, and enters the subduction zone where it will melt

Question 10

Define Radiometric Dating

Answer 10

A process for determining absolute age of rocks and fossils

Question 11

When will RADIATION be given off of an atom

Answer 11

If the balance f protons and neutrons inside the nucleus are very unequal

Question 12

Define Radiation

Answer 12

The emission of particles and energy from an unstable atom

Question 13

What happens to atoms that emit radiation

Answer 13

They become a different element (a more STABLE element)

Question 14

Define Decay

Answer 14

When a parent nucleus emits radiation

Question 15

What are the two common forms of Carbon that organisms intake through their lives?

Answer 15

C-14 and C-12