WorksheetsEarth's History of Change Notes Review
Total questions: 12
Worksheet time: 10mins
What geologic principles (or laws) are best displayed here?
Superposition
Original horizontality
Cross-cutting relationships
Unconformities
Which layer is OLDER? Layer M or Intrusion P?
Layer M
Intrusion P
If the half-life of a radioactive group of atoms is 100 years, then how old is the rock if there have been two half-lives?
25 years
200 years
400 years
800 years
This process, which forms planets, occurs when gravity makes planetesimals collide. This creates great heat which melts and fuses the materials together.
Differentiation
Secretion
Accretion
Planetary formation
Cyanobacteria photosynthesize and created waste gases which led to what???
The great nitration event
The great oxygenation event
The great carbon dioxide event
The great ozonification bifurcation event
What is the main evidence for the great oxygenation event?
Fossils known as BIF's
Formations of rock known as the Banded Iron Formations
BUF's
Formations of rock known as the Banded Iridium Formations.
Events that wipe out large percentages of living things are known as???
Great dyings
Extinctions
Extinction Level Event
Mass Extinctions
