
Our Changing Earth: Plate Tectonics and Large
... Uncle!Max!and!the!boys!laughed.!! “No,”!said!Uncle!Max,!spreading!out!the!folded!papers.!“These!are!all!maps.!They!will!show!us! where!we!are!headed.”!! “Why!don’t!you!just!look!up!the!map!on!your!phone?”!asked!Charlie.!! “Well,!we!can!do!that!too,”!said!Uncle!Max.!“But!just!in!case!the!phone!batter ...
... Uncle!Max!and!the!boys!laughed.!! “No,”!said!Uncle!Max,!spreading!out!the!folded!papers.!“These!are!all!maps.!They!will!show!us! where!we!are!headed.”!! “Why!don’t!you!just!look!up!the!map!on!your!phone?”!asked!Charlie.!! “Well,!we!can!do!that!too,”!said!Uncle!Max.!“But!just!in!case!the!phone!batter ...
Chapter6
... body of the Earth is pulled away from the water, resulting in another high tide. 5. Differential gravitational pull on the various parts of the Earth results in two areas of the Earth experiencing high tides. On most days on the Earth there are two high tides and two low tides. 6. As the Earth rotat ...
... body of the Earth is pulled away from the water, resulting in another high tide. 5. Differential gravitational pull on the various parts of the Earth results in two areas of the Earth experiencing high tides. On most days on the Earth there are two high tides and two low tides. 6. As the Earth rotat ...
Earth`s Layers
... • The mantle is the layer of Earth between the crust and the core. • ● It contains most of the Earth’s mass. • ● It has more magnesium and less aluminum and silicon than the crust. • ● The mantle is denser than the crust. ...
... • The mantle is the layer of Earth between the crust and the core. • ● It contains most of the Earth’s mass. • ● It has more magnesium and less aluminum and silicon than the crust. • ● The mantle is denser than the crust. ...
FORCES ON EARTH - Flipped Out Science with Mrs. Thomas!
... The Mid-Atlantic Ridge is one of the world’s largest divergent plates, running North to South in just about the center of the Atlantic Ocean. All along this ridge, volcanic activity takes place and the sea floor is spreading East and West at a rate of ...
... The Mid-Atlantic Ridge is one of the world’s largest divergent plates, running North to South in just about the center of the Atlantic Ocean. All along this ridge, volcanic activity takes place and the sea floor is spreading East and West at a rate of ...
Unit 4 - College Guild
... So far we have been studying rocks and the Earth’s structure. But now we will focus on the evolution of the Earth, starting from its early age until the present. As mentioned earlier, rocks record time and information. The oldest rocks are at the bottom of the rock layers, or strata, each representi ...
... So far we have been studying rocks and the Earth’s structure. But now we will focus on the evolution of the Earth, starting from its early age until the present. As mentioned earlier, rocks record time and information. The oldest rocks are at the bottom of the rock layers, or strata, each representi ...
The Lithosphere… - Mr Vincent Science
... dark mafic rocks on contact with ocean water. Mafic rocks are rich in magnesium and iron. The upper layers of the mantle are fined grained basalt, further down larger grained gabbro can be found. The thickness of the oceanic crust is almost always around 6 to 9km. This type of crust is similar in de ...
... dark mafic rocks on contact with ocean water. Mafic rocks are rich in magnesium and iron. The upper layers of the mantle are fined grained basalt, further down larger grained gabbro can be found. The thickness of the oceanic crust is almost always around 6 to 9km. This type of crust is similar in de ...
Earthquakes
... • Three station recordings are needed to locate an epicenter • Circle equal to the epicenter distance is drawn around each station • Point where three circles intersect is the epicenter ...
... • Three station recordings are needed to locate an epicenter • Circle equal to the epicenter distance is drawn around each station • Point where three circles intersect is the epicenter ...
Chapter 11
... million years], periods [a division of geologic time longer than an epoch and included in an era], and epochs [usually les than tens of millions of years ago]). The sequence in this scale is based upon the relative positions of rock strata above or below one another. An important general principle i ...
... million years], periods [a division of geologic time longer than an epoch and included in an era], and epochs [usually les than tens of millions of years ago]). The sequence in this scale is based upon the relative positions of rock strata above or below one another. An important general principle i ...
Plate Tectonics
... areas and glacial deposits in tropical areas suggest that continents have moved. ...
... areas and glacial deposits in tropical areas suggest that continents have moved. ...
Unit 15(Some Natural Phenomena)
... 22. In an electroscope if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of prositive charge is brought in contact with the clip, what will happen? 23. The strips of an electroscope dive ...
... 22. In an electroscope if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of prositive charge is brought in contact with the clip, what will happen? 23. The strips of an electroscope dive ...
lecture notes on Newton`s laws
... Gravitational force: for abody of mass m in a gravitational field (e.g., on ...
... Gravitational force: for abody of mass m in a gravitational field (e.g., on ...
Exploration of the Millikan Oil-Drop Experiment
... Exploration of the Millikan Oil-Drop Simulation The purpose of this exploration is to become familiar with the simulation of a simplified version of the Millikan oil-drop experiment and to review the underlining physics principles necessary to understand his experiment. As you work through this exer ...
... Exploration of the Millikan Oil-Drop Simulation The purpose of this exploration is to become familiar with the simulation of a simplified version of the Millikan oil-drop experiment and to review the underlining physics principles necessary to understand his experiment. As you work through this exer ...
18.3 power point - Trimble County Schools
... • Intrusive igneous rock body, including batholiths, stocks,sills & dikes • Formed through mountain-building processes and oceanic-oceanic collisions • Can be exposed at Earth’s surface to uplift and erosion ...
... • Intrusive igneous rock body, including batholiths, stocks,sills & dikes • Formed through mountain-building processes and oceanic-oceanic collisions • Can be exposed at Earth’s surface to uplift and erosion ...
Schiehallion experiment

The Schiehallion experiment was an 18th-century experiment to determine the mean density of the Earth. Funded by a grant from the Royal Society, it was conducted in the summer of 1774 around the Scottish mountain of Schiehallion, Perthshire. The experiment involved measuring the tiny deflection of a pendulum due to the gravitational attraction of a nearby mountain. Schiehallion was considered the ideal location after a search for candidate mountains, thanks to its isolation and almost symmetrical shape. One of the triggers for the experiment were anomalies noted during the survey of the Mason–Dixon Line.The experiment had previously been considered, but rejected, by Isaac Newton as a practical demonstration of his theory of gravitation. However, a team of scientists, notably Nevil Maskelyne, the Astronomer Royal, were convinced that the effect would be detectable and undertook to conduct the experiment. The deflection angle depended on the relative densities and volumes of the Earth and the mountain: if the density and volume of Schiehallion could be ascertained, then so could the density of the Earth. Once this was known, then this would in turn yield approximate values for those of the other planets, their moons, and the Sun, previously known only in terms of their relative ratios. As an additional benefit, the concept of contour lines, devised to simplify the process of surveying the mountain, later became a standard technique in cartography.