Earth Interior and Plate tectonics
... temperature 50oC(120oF) • Radioactive elements contribute to Earth's high internal temperature. Earth's interior contains radioactive isotopes (uranium, thorium and potassium- are quite rare), their nuclei break up, releasing energy as they become more stable. ...
... temperature 50oC(120oF) • Radioactive elements contribute to Earth's high internal temperature. Earth's interior contains radioactive isotopes (uranium, thorium and potassium- are quite rare), their nuclei break up, releasing energy as they become more stable. ...
Timeline of the development of the theory of plate tectonics
... to fit together. He suggested that the continents were once joined and that the Americas were "torn away" from Europe and Africa. 1638 Danish Anatomist and Geologist, Nicolaus Steno - proposed the Law of Superposition: each layer of rock is older than the layer above it. 1785 Scottish farmer and nat ...
... to fit together. He suggested that the continents were once joined and that the Americas were "torn away" from Europe and Africa. 1638 Danish Anatomist and Geologist, Nicolaus Steno - proposed the Law of Superposition: each layer of rock is older than the layer above it. 1785 Scottish farmer and nat ...
Earth`s Interior Notes
... - Differentiation (layering) of Earth’s interior is due to gravity and differing densities in molten state. - Earth’s main heat engine to create molten state : 1. radioactive decay (Uranium, Potassium, Thorium). 2. Pressure from asteroid collisions. ...
... - Differentiation (layering) of Earth’s interior is due to gravity and differing densities in molten state. - Earth’s main heat engine to create molten state : 1. radioactive decay (Uranium, Potassium, Thorium). 2. Pressure from asteroid collisions. ...
5. The Theory of plate tectonics
... We can depict Mother Earth as a lady of 46, if her ‘years’ are megacenturies. The first seven of those years are wholly lost to the biographer, but the deeds of her later childhood are to be seen in old rocks in Greenland and South Africa. … Most of what we recognize on Earth, including all substant ...
... We can depict Mother Earth as a lady of 46, if her ‘years’ are megacenturies. The first seven of those years are wholly lost to the biographer, but the deeds of her later childhood are to be seen in old rocks in Greenland and South Africa. … Most of what we recognize on Earth, including all substant ...
Document
... Vocabulary • Magma – Molten rock, usually mostly silica. The liquid may contain dissolved gases as well as some solid minerals. • Erosion – The physical removal of rock by an agent such as running water, glacial ice, or wind. • Equilibrium – Material is in equilibrium if it is adjusted to the physi ...
... Vocabulary • Magma – Molten rock, usually mostly silica. The liquid may contain dissolved gases as well as some solid minerals. • Erosion – The physical removal of rock by an agent such as running water, glacial ice, or wind. • Equilibrium – Material is in equilibrium if it is adjusted to the physi ...
PS review Earth
... • Wind is caused by differences in air pressure. • The air in a pressure gradient moves from areas of high pressure to areas of low pressure. • Earth’s rotation affects the direction of winds. This is the Coriolis effect. • Winds in the Northern Hemisphere curve right, while winds in the Southern He ...
... • Wind is caused by differences in air pressure. • The air in a pressure gradient moves from areas of high pressure to areas of low pressure. • Earth’s rotation affects the direction of winds. This is the Coriolis effect. • Winds in the Northern Hemisphere curve right, while winds in the Southern He ...
Slide 1
... CCSS.Math.Content.6.NS.B.4 Find the least common multiple of two who numbers less than or equal to 12. ...
... CCSS.Math.Content.6.NS.B.4 Find the least common multiple of two who numbers less than or equal to 12. ...
view the Lecture Presentation
... Phanerozoic “Visible life” (542 Ma to the present). Started 542 Ma at the Precambrian / Cambrian boundary. Marks the 1st appearance of hard shells. ...
... Phanerozoic “Visible life” (542 Ma to the present). Started 542 Ma at the Precambrian / Cambrian boundary. Marks the 1st appearance of hard shells. ...
Chapter 7 Earth and the Terrestrial Worlds
... • What processes shape Earth’s surface? • The four major geological processes are impact cratering, volcanism, tectonics, and erosion. Earth has experienced many impacts, but most craters have been erased by other processes. We owe the existence of our atmosphere and oceans to volcanic outgassin ...
... • What processes shape Earth’s surface? • The four major geological processes are impact cratering, volcanism, tectonics, and erosion. Earth has experienced many impacts, but most craters have been erased by other processes. We owe the existence of our atmosphere and oceans to volcanic outgassin ...
ocks in the lithosphere
... There are three basics types of rocks; Igneous rock, sedimentary rocks and metamorphic rocks. Igneous rock is rock formed by the hardening and crystallization of molten material that originates deep within the earth. Two important variables used for the classification of igneous rocks are part ...
... There are three basics types of rocks; Igneous rock, sedimentary rocks and metamorphic rocks. Igneous rock is rock formed by the hardening and crystallization of molten material that originates deep within the earth. Two important variables used for the classification of igneous rocks are part ...
Composition of the crust, part 1
... landmasses that have broken up and literally drifted apart over the last several million years. Plate tectonics, a descendant of continental drift, is a coherent theory of massive crustal rearrangement based on the movement of continent-sized lithospheric plates. ...
... landmasses that have broken up and literally drifted apart over the last several million years. Plate tectonics, a descendant of continental drift, is a coherent theory of massive crustal rearrangement based on the movement of continent-sized lithospheric plates. ...
The Changing Earth
... Earth’s Layers • The three layers of Earth are the crust, the mantle, and the core. (see diagram to the right) See the cutaway view and learn more about the Earth's layers. • Crust: the thin, outer layer of Earth • Mantle: A thick layer of rock between the crust and the core of Earth • Core: the in ...
... Earth’s Layers • The three layers of Earth are the crust, the mantle, and the core. (see diagram to the right) See the cutaway view and learn more about the Earth's layers. • Crust: the thin, outer layer of Earth • Mantle: A thick layer of rock between the crust and the core of Earth • Core: the in ...
Wind Patterns
... As a result, when air begins to move north and south due to convection it also moves east. Two points on the same longitude but different latitudes move at different speeds causing a curve in the winds. The influence of the Earth’s rotation on air is called the ...
... As a result, when air begins to move north and south due to convection it also moves east. Two points on the same longitude but different latitudes move at different speeds causing a curve in the winds. The influence of the Earth’s rotation on air is called the ...
Geology of Connecticut
... 2) Sedimentary rocks - Rock made by compacting and cementing of sediments (Lithification) 3) Metamorphic rocks - Rock changed by heat, pressure or chemical reactions into a new type of rock ...
... 2) Sedimentary rocks - Rock made by compacting and cementing of sediments (Lithification) 3) Metamorphic rocks - Rock changed by heat, pressure or chemical reactions into a new type of rock ...
Factors That Affect Climate Change File
... The Earth in Space Not only does the earth tilt on its axis, but because it is not a perfect sphere, the earth wobbles as it spins about this axis. This wobble affects the solar energy received by the different hemispheres and leads to smaller or larger differences between the seasons in these two ...
... The Earth in Space Not only does the earth tilt on its axis, but because it is not a perfect sphere, the earth wobbles as it spins about this axis. This wobble affects the solar energy received by the different hemispheres and leads to smaller or larger differences between the seasons in these two ...
ch08
... Radiometric analyses of stony meteorites and Moon rocks using uranium-lead, uranium-thorium, potassiumargon, and rubidium-strontium dating methods provide ages that cluster between 4.5 and 4.6 billion years. ...
... Radiometric analyses of stony meteorites and Moon rocks using uranium-lead, uranium-thorium, potassiumargon, and rubidium-strontium dating methods provide ages that cluster between 4.5 and 4.6 billion years. ...
oceanic - geography and history 1eso social studies
... It is when rock is broken into smollar pieces by phisical processes. It is most likely to occur in areas of bare rock where there is no vegetation to protect the rock from extremes of weather: •Freeze-thaw or frost shattering •Exfoliation or onion weathering. ...
... It is when rock is broken into smollar pieces by phisical processes. It is most likely to occur in areas of bare rock where there is no vegetation to protect the rock from extremes of weather: •Freeze-thaw or frost shattering •Exfoliation or onion weathering. ...
Science Notes December, 2012 SOL 5.7 Rock Cycle, Weathering
... Rock Cycle, Weathering, Erosion, and Human Impact The rock cycle is the ongoing process by which rocks can change from one type to another. The three basic types of rocks are igneous, sedimentary, and metamorphic. These rock types are classified by how they are formed. Igneous rock forms when magma ...
... Rock Cycle, Weathering, Erosion, and Human Impact The rock cycle is the ongoing process by which rocks can change from one type to another. The three basic types of rocks are igneous, sedimentary, and metamorphic. These rock types are classified by how they are formed. Igneous rock forms when magma ...
Wegener`s Theory of Continental Drift
... One major piece of evidence supporting sea floor spreading (further evidence of Wegener’s hypothesis) is the magnetic “fossilized minerals”; trapped in sections of the sea floor that occur around mid-ocean ridges. The Earth at certain intervals, has changed polarity. The magnetic minerals trapped in ...
... One major piece of evidence supporting sea floor spreading (further evidence of Wegener’s hypothesis) is the magnetic “fossilized minerals”; trapped in sections of the sea floor that occur around mid-ocean ridges. The Earth at certain intervals, has changed polarity. The magnetic minerals trapped in ...
Precambrian Time
... history in which he determined that Earth was more than five thousand years old. He believed Earth had been created in 4004 b.c. Ussher published his chronology, and his book earned widespread acceptance among Europe’s scientific and religious leaders. In the late 1700s, James Hutton, a Scottish phy ...
... history in which he determined that Earth was more than five thousand years old. He believed Earth had been created in 4004 b.c. Ussher published his chronology, and his book earned widespread acceptance among Europe’s scientific and religious leaders. In the late 1700s, James Hutton, a Scottish phy ...
Name
... Fill in the blank to complete each statement. 9. A scientific ____________________ is a well-tested concept that explains a wide range of observations. 10. Breaks in Earth’s crust where rocks have slipped past each other are called ____________________. 11. The lithosphere is broken into separate se ...
... Fill in the blank to complete each statement. 9. A scientific ____________________ is a well-tested concept that explains a wide range of observations. 10. Breaks in Earth’s crust where rocks have slipped past each other are called ____________________. 11. The lithosphere is broken into separate se ...
stressed out vocab answer key
... Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nickel. Lithosphere: made up of the crust and a bit of mantle; divided ...
... Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nickel. Lithosphere: made up of the crust and a bit of mantle; divided ...
Age of the Earth
The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.Following the development of radiometric age dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to those of other stars, it appears that the Solar System cannot be much older than those rocks. Calcium-aluminium-rich inclusions – the oldest known solid constituents within meteorites that are formed within the Solar System – are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of Earth.It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the exact amount of time this accretion process took is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.