Plate Tectonics
This type of plate boundary occurs when two plates move away from each other.
What is a Divergent boundary
This technique measures radioactive decay in minerals to determine the age of rocks, supporting the theory of plate tectonics through ocean floor dating.
Radiometric Dating
Kepler’s First Law states that planets move in this shape of orbit around the Sun.
What is an ellipse?
What are the largest know superstructures in the observable universe termed?
What are “Galaxy Filaments” or “Galaxy Walls”
List the 2 types of crust
what are ocean and continental
Wegener believed this supercontinent existed about 300 million years ago.
Pangaea
This principle states that fossil organisms succeed one another in a definite and recognizable order, allowing rock layers to be dated relatively.
What is the Principle of Fossil Succession?
What are solar winds
When looking at distant astronomical objects we can see that the absorption lines move towards the red end of the spectrum
What is Red Shift
The Earth’s crust and the uppermost mantle together form this rigid layer.
What is the lithosphere
Though not accepted in his time, his theory of continental drift eventually helped form the modern theory of plate tectonics.
Who is Alfred Wegener?
This term represents the greatest span of time
What is an Eon
This property of our planet is one of the key reasons we have seasonal changes
What is Earth's Tilt
Our star sits right in the middle of the HR Star Diagram. Millions of years into the future, what could its new location on the HR diagram be?
Red Giant
This thick layer of the Earth is composed mostly of solid iron and nickel and is the very center of the planet.
What is the inner core?
This boundary type forms mid-ocean ridges like the Mid-Atlantic Ridge.
What is a Divergent Boundary
This Law allows geologists to combine radiometric dating and fossil evidence to build a complete geologic time scale.
What is the Law Original Continuity
What planet was Kepler assigned to study that led to the creation of "Kepler's Laws
What is Mercury
In the early universe it is theorized that only 3 elements were produced in the aftermath of the big bang. What were those elements?
What is, Hydrogen, Helium, Lithium
This layer beneath the lithosphere is semi-fluid and allows tectonic plates to move.
What is the Asthenosphere
The discovery of matching magnetic patterns on both sides of mid-ocean ridges provided strong support for this theory.
What is seafloor spreading?
This decay product of uranium-238 is commonly used in radiometric dating and forms the basis of the uranium-lead method.
What is lead-206?
Apparent displacement of an object due to the change in the observer's point
of view
What is the Parallax Effect
This proposed model suggests the universe could continue expanding forever until particles and even atoms are torn apart.
Why part of the Earth's layers do meteorite compositions help identify
What is the Inner and Outer Core