Chapter 3 The Dynamic Earth
... The biosphere is the part of Earth where ___________________________, extending about 11 km into the ocean and about 9 km into the atmosphere. The materials that organisms require must be continually __________________. Gravity allows a planet to maintain an atmosphere and to cycle materials. Suitab ...
... The biosphere is the part of Earth where ___________________________, extending about 11 km into the ocean and about 9 km into the atmosphere. The materials that organisms require must be continually __________________. Gravity allows a planet to maintain an atmosphere and to cycle materials. Suitab ...
L8EarthAndFossils
... Radiometric dating is the most important method of determining the age of rocks. Potassium-argon dating based on the 40K/40Ar isotope pair is particularly important. Potassium (K) exists in 3 isotopes - 39K (93.2581%), 40K (0.0117%), 41K (6.7302%). The radioactive isotope 40K decays to 40Ar and 40C ...
... Radiometric dating is the most important method of determining the age of rocks. Potassium-argon dating based on the 40K/40Ar isotope pair is particularly important. Potassium (K) exists in 3 isotopes - 39K (93.2581%), 40K (0.0117%), 41K (6.7302%). The radioactive isotope 40K decays to 40Ar and 40C ...
Earth`s Interior (pages 6–13)
... Key Concept: Geologists have used two main types of evidence to learn about Earth’s interior: direct evidence from rock samples and indirect evidence from seismic waves. • Scientists cannot travel inside Earth to explore it. So scientists must learn about Earth’s interior, or inside, in other ways. ...
... Key Concept: Geologists have used two main types of evidence to learn about Earth’s interior: direct evidence from rock samples and indirect evidence from seismic waves. • Scientists cannot travel inside Earth to explore it. So scientists must learn about Earth’s interior, or inside, in other ways. ...
Student Handout - University of Louisville
... being destroyed by human activity. 5. The Erath layer located above the Earth's inner core and below its mantle is called the outer core. 6. Convection currents are the main way to transfer heat from one area to another. 7. The process by which natural forces (such as water, wind, or ice) gradually ...
... being destroyed by human activity. 5. The Erath layer located above the Earth's inner core and below its mantle is called the outer core. 6. Convection currents are the main way to transfer heat from one area to another. 7. The process by which natural forces (such as water, wind, or ice) gradually ...
The Layers of the Earth PPT
... * Asthenosphere- solid rock that flows slowly (like hot asphalt) in the upper & middle part of the mantle * Mesosphere- middle layer – lower mantle rock that is hotter but harder than asthenosphere * Outer Core- liquid layer * Inner Core- solid, very dense ...
... * Asthenosphere- solid rock that flows slowly (like hot asphalt) in the upper & middle part of the mantle * Mesosphere- middle layer – lower mantle rock that is hotter but harder than asthenosphere * Outer Core- liquid layer * Inner Core- solid, very dense ...
File - earth science online
... Seismic Waves (cont.) Seismic waves – P waves • Travels through liquids as well as solids • In all materials, P waves travel faster than do S waves – S waves • Cannot travel through liquids Seismic Waves (cont.) Seismic waves – Seismic waves refract (bend) as they pass from one material to another – ...
... Seismic Waves (cont.) Seismic waves – P waves • Travels through liquids as well as solids • In all materials, P waves travel faster than do S waves – S waves • Cannot travel through liquids Seismic Waves (cont.) Seismic waves – Seismic waves refract (bend) as they pass from one material to another – ...
Density of Earth Materials Lab - Mercer Island School District
... crust is composed of the rock basalt. Basalt is mafic (which means it has a high magnesium and iron content), composed of the minerals: calcium-rich plagioclase feldspar, olivine, amphibole, and pyroxene. Continental crust has more range in composition, but for our purposes we will assume that its a ...
... crust is composed of the rock basalt. Basalt is mafic (which means it has a high magnesium and iron content), composed of the minerals: calcium-rich plagioclase feldspar, olivine, amphibole, and pyroxene. Continental crust has more range in composition, but for our purposes we will assume that its a ...
Earthquakes
... • (1) What is difference in time of the two waves? • (2) What is difference in time of the two waves? • (3) What is the difference in time of the two waves? • Use a compass and the scale on the bottom of the page to determine the location of the quake. ...
... • (1) What is difference in time of the two waves? • (2) What is difference in time of the two waves? • (3) What is the difference in time of the two waves? • Use a compass and the scale on the bottom of the page to determine the location of the quake. ...
Plate Tectonics Chapter Challenge sample
... new seafloor moves further away from the ridge and cools. As it cools, it becomes more dense and sinks back into the mantle, where it is heated and rises again. This pattern of heating and rising, cooling and sinking in Earth’s mantle is known as ...
... new seafloor moves further away from the ridge and cools. As it cools, it becomes more dense and sinks back into the mantle, where it is heated and rises again. This pattern of heating and rising, cooling and sinking in Earth’s mantle is known as ...
Volcanoes and Earthquakes KS2 planning
... Explain that we will be learning about volcanoes and earthquakes this half-term in geography Show children some non-fiction books on volcanoes and earthquakes Explain that today we are going to be finding out the meaning of some of the words that we will be coming across in these topics Revise how t ...
... Explain that we will be learning about volcanoes and earthquakes this half-term in geography Show children some non-fiction books on volcanoes and earthquakes Explain that today we are going to be finding out the meaning of some of the words that we will be coming across in these topics Revise how t ...
On page of your notebook create the following chart.
... fill the space below West Africa. Many scientists believe that several or even all of the present continents of the world once fit together into a single, giant continent which some scientists call Pangea. Gradually, this large land mass separated and its pieces drifted apart to their present locati ...
... fill the space below West Africa. Many scientists believe that several or even all of the present continents of the world once fit together into a single, giant continent which some scientists call Pangea. Gradually, this large land mass separated and its pieces drifted apart to their present locati ...
Chapter 2 Lesson 3 How Do Movements Of The Earth`s Crust
... Earth’s Structure Plates “float” on the softer rock of the mantle. As the rock flows, plates move. Because plates fit together so closely, the movement of one plate affect the other plates. At different places, plates move toward each other, away from each other, or alongside each other. These ...
... Earth’s Structure Plates “float” on the softer rock of the mantle. As the rock flows, plates move. Because plates fit together so closely, the movement of one plate affect the other plates. At different places, plates move toward each other, away from each other, or alongside each other. These ...
Unit 1: An Overview of Geography
... bodies of water of the world is to put it all on a globe, a round ball like the Earth itself. • The only difference between a globe and the Earth itself is the scale, or size, represented on the globe. OwlTeacher.com ...
... bodies of water of the world is to put it all on a globe, a round ball like the Earth itself. • The only difference between a globe and the Earth itself is the scale, or size, represented on the globe. OwlTeacher.com ...
10-3 Directed Reading
... 24. Ice covered most of Earth when all the continents were located near ______________________________________________________________ . 25. What caused Earth’s temperatures to change and its ice sheet to melt? _______________________________________________________________ 26. What happens to popul ...
... 24. Ice covered most of Earth when all the continents were located near ______________________________________________________________ . 25. What caused Earth’s temperatures to change and its ice sheet to melt? _______________________________________________________________ 26. What happens to popul ...
Document
... 24. Ice covered most of Earth when all the continents were located near ______________________________________________________________ . 25. What caused Earth’s temperatures to change and its ice sheet to melt? _______________________________________________________________ 26. What happens to popul ...
... 24. Ice covered most of Earth when all the continents were located near ______________________________________________________________ . 25. What caused Earth’s temperatures to change and its ice sheet to melt? _______________________________________________________________ 26. What happens to popul ...
File - 7th Grade Science
... ▪ Convergent boundary – 2 plates move toward each other ▪ Denser oceanic plate usually forced down into the mantle ▪ Subduction zone – the area where one plate slide under another ▪ What happens when 2 continents collide at a plate boundary? ...
... ▪ Convergent boundary – 2 plates move toward each other ▪ Denser oceanic plate usually forced down into the mantle ▪ Subduction zone – the area where one plate slide under another ▪ What happens when 2 continents collide at a plate boundary? ...
Remnants of early Earth differentiation in today`s Earth
... After the arguments of McDonough and Sun, Chem. Geol., 1995 ...
... After the arguments of McDonough and Sun, Chem. Geol., 1995 ...
Ch 2 lecture notes
... Earth’s Energy Budget, continued Internal Sources of Energy When Earth formed about 4.6 billion years ago, its interior was heated by radioactive decay and gravitational contraction. The decay of radioactive atoms still generates enough energy as heat to keep Earth’s interior hot. Earth’s interior a ...
... Earth’s Energy Budget, continued Internal Sources of Energy When Earth formed about 4.6 billion years ago, its interior was heated by radioactive decay and gravitational contraction. The decay of radioactive atoms still generates enough energy as heat to keep Earth’s interior hot. Earth’s interior a ...
Chapter 6, Rocks and Minerals Lesson 2, Earth`s Changing Crust
... Earthquakes are related to cracks in the crust called faults. During an earthquake the crust on either side, or on both sides, of a fault is in motion. Vibrations during an earthquake travel though the crust. To measure crust movement surveyors measure elevation (or how high a place is above sea lev ...
... Earthquakes are related to cracks in the crust called faults. During an earthquake the crust on either side, or on both sides, of a fault is in motion. Vibrations during an earthquake travel though the crust. To measure crust movement surveyors measure elevation (or how high a place is above sea lev ...
Plate Tectonics Study Guide KEY The Earth started off as a molten
... MANY observations, AND the assumption that things keep acting how they did in the past 2. What are they useful for? They explain how things work, help you make predictions, and help you think of new areas to investigate 3. What happens if a model is not accurate? (What do you do 1st? 2nd?) First, fi ...
... MANY observations, AND the assumption that things keep acting how they did in the past 2. What are they useful for? They explain how things work, help you make predictions, and help you think of new areas to investigate 3. What happens if a model is not accurate? (What do you do 1st? 2nd?) First, fi ...
Plate Tectonics
... • Has more magnesium and less aluminum and silicon than the crust • Is denser than the crust ...
... • Has more magnesium and less aluminum and silicon than the crust • Is denser than the crust ...
File
... 10. The theory of sea-floor spreading supports ideas that a) the earth is expanding b) the earth is contracting ...
... 10. The theory of sea-floor spreading supports ideas that a) the earth is expanding b) the earth is contracting ...
Spherical Earth
The concept of a spherical Earth dates back to around the 6th century BC, when it was mentioned in ancient Greek philosophy, but remained a matter of philosophical speculation until the 3rd century BC, when Hellenistic astronomy established the spherical shape of the earth as a physical given. The paradigm was gradually adopted throughout the Old World during Late Antiquity and the Middle Ages. A practical demonstration of Earth's sphericity was achieved by Ferdinand Magellan and Juan Sebastián Elcano's expedition's circumnavigation (1519−1522).The concept of a spherical Earth displaced earlier beliefs in a flat Earth: In early Mesopotamian mythology, the world was portrayed as a flat disk floating in the ocean and surrounded by a spherical sky, and this forms the premise for early world maps like those of Anaximander and Hecataeus of Miletus. Other speculations on the shape of Earth include a seven-layered ziggurat or cosmic mountain, alluded to in the Avesta and ancient Persian writings (see seven climes).The realization that the figure of the Earth is more accurately described as an ellipsoid dates to the 18th century (Maupertuis).In the early 19th century, the flattening of the earth ellipsoid was determined to be of the order of 1/300 (Delambre, Everest). The modern value as determined by the US DoD World Geodetic System since the 1960s is close to 1/298.25.