Rock Solid
What are the three main types of rocks?
Igneous, Sedimentary, Metamorphic
What is the longest unit of geological time?
Eon
What do we call preserved remains of plants and animals?
Fossils
The supercontinent that existed about 250 million years ago was called wha
Pangaea
Dinosaurs went extinct at the end of which period?
(Cretaceous Period)
This type of rock forms when magma cools.
Igneous
The age of Earth is about how many years
4.6 Billion Years
What type of scientist studies fossils?
Paleontologist
Earthquakes happen because of movements along what?
Faults/tectonic plate boundaries
What likely caused the mass extinction that killed the dinosaurs?
(Asteroid impact)
Fossils are most commonly found in this type of rock.
Sedimentary
Dinosaurs lived during which era?
Mesozoic Era
Fossils form best when organisms are buried quickly under wh
Sediment
The Ring of Fire is famous for having many of these two natural hazards
Volcanoes and Earthquakes
What event about 2.4 billion years ago filled Earth’s atmosphere with oxygen?
(The Great Oxidation Event)
When heat and pressure change a rock without melting it, it becomes what type?
Metamorphic
What era is sometimes called the “Age of Mammals”?
Cenozoic Era
The process where minerals replace all or part of an organism is called what?
Petrification/Permineralization
What theory explains the movement of Earth’s continents
Plate Tectonics
What was the largest mass extinction in Earth’s history called?
(The Permian Extinction)
The continuous process that changes rocks from one type to another is called what?
The Rock Cycle
Most of Earth’s history took place in which super-long time span?
Precambrian
What is the name of the fossil record “missing link” between dinosaurs and birds?
Archaeopteryx
What scale is used to measure the magnitude of earthquakes?
(Richter Scale)
During the Ice Ages, huge sheets of ice called what covered much of Earth?
(Glaciers)