Scientific Methods
Information and data collected to find someone guilty in a trial and to support a scientific idea.
What is evidence?
All of the planets orbit the Sun in this flat plane.
What is the ecliptic?
It's made mostly of solid iron and nickel.
What is the inner core?
Once an island, now smashing into Eurasia to make the Himalayas.
What is India?
The earliest Eon.
What is the Hadean?
Iron in Earth's core sank there because it has high __________.
What is density?
The process of separating the planet into layers.
What is differentiation?
This type of crust is thin, about 7 miles thick.
What is oceanic crust?
The time it takes for 75% of a parent isotope to turn into daughter isotopes.
What is two half lives?
These super tough minerals are the oldest ones ever found, from Australia.
What are the Jack Hills zircons?
An "educated guess" and preliminary idea to explain something with science.
What is a hypothesis?
The mineral that is found in great abundance in the crust of the Moon.
What is plagioclase feldspar.
It's composed of the crust and uppermost mantle.
What is the lithosphere?
The type of radioactive decay that expels two protons.
What is alpha decay?
The oldest place you can stand on, it's about 4 billion years old.
What is the Acasta Gneiss?
Planets in the inner solar system are made of these materials that form solids at high temperatures.
What are refractory materials?
Rock that forms oceanic crust on Earth and the dark areas on the Moon.
What is basalt?
The rock that's found in the mantle, made mostly of olivine and pyroxene.
What is peridotite?
The "dip angle" of the Earth's magnetic field at different latitudes.
What is inclination?
Destroyer of mountains, when water seeps into crack and expands when it freezes.
What is frost wedging?
Some types of earthquake waves are blocked by this because it's liquid.
What is the outer core?
An early hypothesis for the formation of the solar system that involved a "rogue" star passing close to the sun.
What was the Chamberlain-Moulton hypothesis?
Rocks that are brought up to the surface by volcanoes, like peridotite from the mantle.
What is a xenolith?
A dipping zone of earthquakes above a subducting plate.
What is the Wadati-Benioff Zone?
Evidence of Hadean life may be found in the isotope ratio of this element in graphite inclusions in a 4.1 byr. zircon crystal.
What is carbon?