How old is Earth and how were we able to figure this out?
4.6 Billion years old
What planet is it from the sun?
What is relative dating?
placing events in their proper sequential order without knowing their age in years
What is the law of superposition?
Law states that the youngest layers are on top and the oldest layer is on the bottom
What is the hydrosphere?
Dynamic mass of water that is continually on the move undergoing the water cycle of evaporation to precipitation to the ocean.
what is the atmosphere?
Live - giving gaseous envelope that surrounds Earth. Half of the atmosphere lies below an altitude of 3.5 miles and 90% occurs within 10 miles of Earth's surface. The atmosphere protects us from sun's intense energy and dangerous UV radiation
What is the geosphere?
Lies beneath the atmosphere and the oceans; considered solid earth. It extends from the surface to the center of the planet and is the largest of the earth's 4 sphere
What is the biosphere?
Includes ALL life on Earth and heavily influences the other 3 spheres
Origins of Earth
14 billion years ago we have the big bang theory , which was a big explosion that sent all matter of the universe flying outward and at very high speeds. Earth formed from debris cooling and condensing, in the milky way galaxy.
What is the process of Crystallization?
Magma or molten rock froms deep beneath Earth's surface and over time it cools and solidifies.
What are igneous rocks?
Magma that cools either inside (intrusive) or outside (extrusive) and then solidifies ex) felsic, olivine, mica, quartz, muscovite, feldspar
What is weathering?
The physical breakdown and chemical alteration of rock at or near earths surface
What are sedimentary rocks?
Come from weathering where sediments come together from rivers, rain, etc. This is where you will find fossils. ex) shale, sandstone, Conglomerate
What is a metamorphic rock?
It is formed when a sedimentary rock is intruded by a mass of magma and is exposed to great pressure and heat. Examples would be: shale to slate or limestone to marble
What is a mineral
-naturally occurring, inorganic solid, definite crystalline structure, and a unique composition
what is an atom?
Makes up a mineral; the smallest particle that cannot be split. Atoms contain protons neutron inside the nucleus that is surrounded by electrons
What is the atomic number and what does it determine?
Determine the chemical nature of the atoms and is also the number of protons
When electrons are shared between atoms
When electrons are transferred between electrons
Ions are atoms with a positive or negative charge
swarm of electrons around only other metals
What is the most abundant element of earth?
What is the most abundant element in crust of earth(walk on)?
Want to see the other 25 Flashcards in GLG 201 TEST 1?JOIN TODAY FOR FREE!