Semester 1 Review Jeopardy Rock Record Earth’s Past Plate Techs Earthquake Volcano
Which law tells us that a fault or igneous intrusion is always younger than the rock layers it cuts through? Answer
The Law of Crosscutting Relationships Home
Answer Evidence that an animal was once in a place like footprints or burrows?
Home Trace Fossils
Break in the geologic record? Answer
Unconformity Home
The number of half-lives gone through when a parent isotope is ¼ of it’s original amount? Answer
2 Home
Which law tells us that all rocks beneath an unconformity are older than rocks above the unconformity? Answer
Law of Superposition Home
In radiometric dating, what is the original material called? (the radioactive material) Answer
Home Parent isotope
The Impact Hypothesis says dinosaurs became extinct when… Answer
An asteroid crashed into the Earth Home
The super continent that formed about 300 million years ago. Answer
Pangea Home
An occurrence where many species die out? Answer
Mass extinction Home
A geologic period is usually named for? Answer
Home. The place where characteristic fossils were first discovered.
Gradual development of new organisms from pre-existing ones? Answer
Evolution Home
Answer These are the longest units of geologic time?
Home Eons
Plates that slide past each other in opposite directions? Answer
Transform Home
One way that plate movement affects climate? Answer
Creating mountains that affect wind patterns. Home
Most scientists agree that the Earth is about how hold? Answer
4.6 Billion Years ago Home
Answer Slowest moving seismic waves?
Surface waves Home
Why earthquakes usually occur at plate boundaries? Answer
Great stress Home
How the intensity of XII is described? Answer
Total destruction Home
Area on Earth’s surface where no direct seismic waves can be detected? Answer
Home Shadow zone
Answer Tracing of earthquake motion that depends on a seismograph.
Seismogram Home
Liquid rock underground? Answer
Magma Home
A large pluton? Answer
Batholith Home
The majority of earthquakes and volcanoes happens here? Answer
Pacific Ring of Fire Home
Iceland lies along this? Answer
Mid-Atlantic Ridge Home
Hawaiian Island formed due to this? Answer
Hot Spot Home