Multiple Choice Questions on Geological Time Unit Test

Geological Time Unit 2 Test /44
Multiple choice: Choose the best answer for each question /13
According to Earth scientists, how old is the Earth? 4.6 million years
3.5 million years 4.6 billion years
3.5 billion years
When did oxygen first form in the atmosphere according to Earth scientists? 4.6 billion years ago
3.5 billion years ago 2 billion years ago
1 billion years ago
Which life form came first according to the Geological Time Scale? Dinosaurs
Birds
Fish
Mammals
Which of the following is the shortest? Period
Epoch
Era
Eon
Which of the following was first? Paleozoic
Mesozoic
Cenozoic
Precambrian
Which of the following is known as the “Age of Fishes?” Paleozoic
Mesozoic
Cenozoic
Precambrian
During which of the following were dinosaurs active? Paleozoic
Mesozoic
Cenozoic
Precambrian
According to the Geological Time Scale, when did the mass extinction of the dinosaurs happen? 65 million years ago
80 million years ago 285 million years ago
1 billion years ago
Which element is used when doing radioactive dating on more recent geological events? Uranium
Lead
Potassium
Carbon
Why the element in #9 used for dating on more recent geological events? It is easy to find.
It is not dangerous It has a half-life that is not too long, nor too short.
It can be seen more easily through a microscope.
Use the diagram to answer questions 11 to 13 Which is older- fault E or dike D? E
D
Which is the youngest of the following? A
B
C
D
What does the law of superposition tell us? A is older than B
B is younger than C C is younger than A
D is older than C
Use the table below to answer the following questions. /6
Isotopes Frequently Used in Radiometric Dating
Radioactive Parent Stable Daughter Half-Life
U-238 Pb-206 4.5 billion