Geologic Time Scale
Determining the exact age of Earth's strata is called ______ dating
Absolute
The forces causing causing Earth's plates to move are called ________ currents
Convection
Data based on traits that are not numbers is called __________.
Qualitative
The era when the Earth was very hot, had many thunderstorms, and did not have any fossils was the _______ era.
Hadean
Earth's rock layers are called _________
Strata
When two plates of the same density collide, they form a/an _______.
Mountain
The variable that is the CAUSE is the __________ variable.
Independent
The extinction event that was caused by a giant meteor and killed off the dinosaurs was the _________.
Cretaceous-Paleogene Extinction Event (KPG)
The two largest subdivisions of geologic time are called _____ and ______.
Eons
Eras
Seafloor spreading happens at _________ boundaries
Divergent
The control group in an experiment...
A. Is in normal conditions
B. Proves the Hypothesis is correct
C. Is the group of scientists controlling the experiment
A
Life began to diversify in the ________ explosion
Cambrian
The layers of earth's rock are organized from ______ on the bottom to _______ on top. This is called the principle of ___________.
Oldest
Newest
Superposition
Earthquakes happen at _______ and _______ boundaries
Transform
Convergent
Leonard dropped his glass beaker and it shattered. He swept up the pieces and threw them away in the glass disposal trashcan. Is this safe?
NO. Only the teacher is allowed to clean up broken glass.
The era we are currently in is the _______ era
Cenozoic
Trilobites became extinct before ammonites existed. In undisturbed rock layers, would a layer with trilobites be above or below a layer with ammonites?
Below
The Philippine plate is denser than the South American plate. Each of these is a different type of plate. What type of plate is the Philippine plate?
Oceanic
List the 6 steps of Scientific Inquiry in order.
Ask a Question
Do Background Research
Form a Hypothesis
Test the Hypothesis
Arrive at a Conclusion
Name all three reasons birds did not go extinct during the event that wiped out the dinosaurs.
1. They were small
2. They could fly
3. They ate anything