Divisions of Time
How many divisions of Eons are there?
A) 5
B) 4
C) 6
D) There is only one Eon in geological Time
B) 4
Hadean, Archean, Proterozoic, Phanerozoic
What is relative dating?
Chronological order of events without specific dates.
What does Absolute dating do?
Provides specific numerical age in years
How old is our solar system?
A) 5 Billion years old
B)4.5 Billion years old
C)4.6 Billion years old
C) 4.6 Billion years old
What are the three types of rocks?
Igneous, Sedimentary, Metamorphic
The Phanerozoic Eon is divided into three eras. Which of the following is an era in the Phanerozoic Eon:
A) Jurassic
B) Cenozoic
c) Cambrian
B) Cenozoic
Law of superposition states that ____ rocks are on the bottom while ___ rocks are on the top.
A) Older, Younger
B) Younger, Older
c) Younger, Younger
D) Older, Older
A) Older, Younger
What are the two types of Isotopes used to date objects?
Carbon 14 and U238
what are building blocks to planets?
Planetesimals
Name two types of mineral tests.
Luster, streak, hardness, cleavage/fracture, density
On the Geological time scale there are scales. Which scale comes after Eons and Eras?
Periods
A) Newtons law of gravity
B) Principle of original horizontally
C) Horizontal Principle
B) Principle of Original horizontally
What is the time it takes for half a radioactive element to decay called?
Half life
What hypothesis imagines the start of our solar system?
Solar Nebula Hypothesis
Which layer of the earth is liquid?
The outer core
Which period did multicellular life first appear?
A) Cambrian
B) Jurassic
C) Quaternary
A) Cambrian
In cross cutting relationships is the fault younger or older that the rocks it cuts into?
Younger
Carbon 14 can date objects up to how many years?
A)50,000 years
B)24,000 years
C)55,000 years
A) 50,000 years
These steps describe the formation of what?
Dust coagulation
Pebble formation
Concentration and clumping
Gravitational instability
Collision based growth
The formation of planetesimals
What step in a stars life cycle comes after the main sequence?
Red Giant
What Epoch are we currently living in?
A) Holocene
B) Late Jurassic
C) Pleistocene
A) Holocene
What had happened if layers of sedimentary rock are not horizontal?
The layers have been deformed after deposition.
How long is U238 half life?
Solar nebula collapse, Planetesimals, Proto-Earth growth, Differentiation, late/heavy bombardment
What phase of the moon comes after the new moon and before the first quarter?
Waxing crescent