Seafloor spreading - Study guides, Class notes & Summaries

origin of earth - Answer-• Supernova: death of a star (great explosion) • Supernova happened 4.6 bya, dust and gas flattens to a disk and spins faster due to gravity and solar nebula formed. • Solar Nebula: describes formation of Earth 4.5 bya • Nebula: gas cloud origin of oceans - Answer-• volcanic explosion, H2O condensed and rained down for thousands of years to create oceans • icy comets hitting earth (responsible for 1/2 of earths ocean water) origin of life - Answer-•...

Physical Geology is the study of correct answers the materials that compose Earth and the ways in which they are organized and distributed throughout the planet a hypothesis must be testable so that correct answers it can be objectively evaluated, its accuracy can be independently assessed, its ability to make accurate predictions can be appraised, and it is possible to revise the hypothesis if it does not provide accurate predictions the rock cycle is correct answers a concept proposing t...

IB Marine Science SL UPDATED ACTUAL Exam Questions and CORRECT Answers Abyssal Hill - CORRECT ANSWER- Small sediment-covered inactive volcano or intrusion of molten rock less than 200 meters (650 ft) high, thought to be associated with seafloor spreading. Abyssal hills punctuate the otherwise flat abyssal plain

What does plate tectonics refer to? correct answers It is a theory explaining the movement of the Earth's crust -Earth's crust is not solid but rather a bunch of pieces (or 'plates') that move on the surface of the Earth. Similar to cracked egg shell. We need all three boundary types for plates to move around Earth's surface: -Convection currents -- drives the movement -Mid-ocean ridge -- spreading center Subduction zones -- oceanic trench site of crust destruction What is the maj...

EARTH SCIENCE FINAL EXAM QUESTIONS AND ANSWERS List the 3 main layers of the earth from the center to the outside based on composition (what they are made out of). - Correct Answer ️️ -1). Core (Inner and outer)-solid inner liquide outer. Iron/nickel alloy. Extreme pressure 2).Mantle-82% of the earth's volume-Solid, rocky, shell 3). Crust (Oceanic-younger rocks and Continental-granite rocks) List the 5 mechanical layers of the earth (based on how they deform?) Whic layers is a liqui...

How much of the Earth's surface is covered by ocean? correct answers 71%. 97 percent of the Earth's water. Less than 1 percent of the Earth's water is fresh water, and 2-3 percent is contained in glaciers and ice caps. The oceans contain 99 percent of the living space on the planet. Where is the largest percentage of the world ocean found? correct answers southern hemisphere How old is the Earth? correct answers 4.543 billion years What causes the Earth's magnetic field? c...

MEA 250 Test 2 Question and answers rated A+ The water level from which the heights of the tides are measured is referred to as the a. sea level of spring tides. datum. um range. d. tidal variance. - correct answers tidal datum The side of the Earth facing the moon will experience a high tide, while the opposite side of the Earth will have a a. low tide. b. time of no tidal action. c. high tide also. that cannot be predicted. - correct answers high tide also Isostatic move...

EARTH SCIENCE FINAL EXAM QUESTIONS AND ANSWERS List the 3 main layers of the earth from the center to the outside based on composition (what they are made out of). - Correct Answer ️️ -1). Core (Inner and outer)-solid inner liquide outer. Iron/nickel alloy. Extreme pressure 2).Mantle-82% of the earth's volume-Solid, rocky, shell 3). Crust (Oceanic-younger rocks and Continental-granite rocks) List the 5 mechanical layers of the earth (based on how they deform?) Whic layers is a liqui...

OCEAN 101 TEST QUESTIONS AND ANSWERS ALL CORRECT Describe how the continents move and identify the source of heat/energy that drive plate tectonics? - Answer-Continents are on top of giant slabs called Tectonic plates, that are apart of earth's crust. The plates hover on the mantle, which have convection currents that heat these plates which cause them to move. Define what convection currents are and explain the process that creates them. - Answer-Convection Currents are the currents wit...

List the 3 main layers of the earth from the center to the outside based on composition (what they are made out of). - Answer-1). Core (Inner and outer)-solid inner liquide outer. Iron/nickel alloy. Extreme pressure 2).Mantle-82% of the earth's volume-Solid, rocky, shell 3). Crust (Oceanic-younger rocks and Continental-granite rocks) List the 5 mechanical layers of the earth (based on how they deform?) Whic layers is a liquid? - Answer-1.The lithosphere is the outermost mechanical layer a...