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Reading Record Assessment
Reading Record Assessment

... (The key to understanding how earthquakes happen is knowing that Earth is made up of different layers.) ...
1/19 Power Point
1/19 Power Point

... Asthenosphere – soft, putty-like Mesosphere – largest layer Outer core – liquid Inner core- hottest, densest, solid ...
Electric and gravitational fields
Electric and gravitational fields

... 2. Draw diagrams showing the gravitational field of the Earth when viewed from: (a) a large distance away (b) close to the Earth's surface (c) over an area of high density rock 3. The gravitational field of the Earth is 10 Nkg-1. What would the field strength be at a distance above the Earth's surfa ...
Earth*s Surface Review
Earth*s Surface Review

... Geosphere: Earth’s entire solid body. It includes rocks and sediments that cover the core. The largest of the spheres. ...
Earth Science Vocab
Earth Science Vocab

Earth`s Interior
Earth`s Interior

...  The rock in the mantel is soft and flows slowly but is still considered solid. (if you kicked the mantel it would hurt your foot).  Convection-the movement of rock because of differences in density due to temperature. ...
11. Sea Floor Spreading
11. Sea Floor Spreading

Newton’s law of Universal Gravitation
Newton’s law of Universal Gravitation

... Orbital Motion Only “some” of gravity is used to keep object moving in a circle; the “rest” is used to push an object against a scale. If all of gravity is “used up” keeping the orbiting object in a circular orbit, then there is nothing left to push against a scale: ...
Review Guide - Tectonics and Mtn Building
Review Guide - Tectonics and Mtn Building

... and continental crust (what are they made of and which is more dense)? ...
Inferred Properties about Earth`s Interior
Inferred Properties about Earth`s Interior

Structure of the Earth powerpoint
Structure of the Earth powerpoint

... Structure of the Earth • Earth was formed roughly 4.6 billion ears ago and for a long time was entirely molten. • The various materials (elements) that make up the earth were stratified (separated) according to their density. • The densest elements formed the core and the lighter elements floated t ...
Section Quiz
Section Quiz

... ______ 8. What happens when two oceanic plates collide? a. The denser plate fractures. c. The less dense plate subducts. b. The less dense plate fractures. d. The denser plate subducts. ______ 9. What type of mountain is formed when higher blocks fault? a. a folded mountain c. a fault-block mountain ...
Landforms Study Guide
Landforms Study Guide

... Landforms Study Guide (SOL 5.7) Test Thursday November 17th Students will need to be able to:  apply basic terminology to explain how Earth’s surface is constantly changing. (weathering, erosion, deposition)  draw and label the rock cycle and describe the major processes and rock types involved.  ...
Chapter 1.1 – Earth Science
Chapter 1.1 – Earth Science

... Gathering Data Drawing conclusions and reporting ...
Building Earth`s Surface - Academic Resources at Missouri Western
Building Earth`s Surface - Academic Resources at Missouri Western

...  A point of the surface of the Earth directly above the focus  Seismograph  The instrument used to detect and measure the intensity of an earthquake  P, S, & L waves  Leave the focus at about the same time  Mercalli & Richter Scales ...
Planet Earth Vocabulary
Planet Earth Vocabulary

From your observations above, determine the following
From your observations above, determine the following

Review Unit 1 - Effingham County Schools
Review Unit 1 - Effingham County Schools

Lecture 3 Review Sheet
Lecture 3 Review Sheet

... Numbers: Percentages of gases that make up the atmosphere How far from Earth are 99% of all atmospheric gases found? What percentage of Earth’s surface is land and what ocean? Know the thickness of ALL of the Earth’s layers How thick can tectonic plates get? What is the relative density of continent ...
district assessment test #1
district assessment test #1

... 3. What happens to the wild used to determine the life and habitats around a earth has layers and a volcano once it erupts? solid iron core? 4. What is a mid ocean ...
I Can
I Can

... I can describe how scientific innovations have been applied for use in our society and culture. SC.O.E. 1.9 I can use science to explore the natural world (form, function, systems, and changes over time). ...
(Honors Physics) Universal Law of Gravitation
(Honors Physics) Universal Law of Gravitation

... If the weight of a classroom Physics textbook is 42 N, what is the books mass? If the textbook in question #5 was taken to the Moon, would its mass and/or weight change? Complete the following table for these objects “g” is the force of gravity per kilogram (N/kg) Weight is the force of gravity (N) ...
Milankovitch cycles
Milankovitch cycles

Key
Key

... 7) Where does the Earth's atmosphere come from, and how is transported to where we find it? Lithosphere - Volcanoes 8) Where does the Earth's hydrosphere come from, and how does it get to where we find it? Lithosphere - Volcanoes 9) What is the source of all the solid chemical elements found on Eart ...
Normal Document Template
Normal Document Template

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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.
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