About Gravity Chicago IL

A gravity meter measures the force of gravity between a mass inside the instrument and the earth. The force of gravity between two objects varies according to the mass of the objects and the distance between them.

Local Companies

The de Paul Leadership Project
312.362.5519
25 E. Jackson
Chicago, IL
THINK BIG Services, Inc.
773-491-2885
3200 S. Kedzie
Chicago, IL
Illinois Center for Broadcasting
630-916-1700
55 W. 22nd Street
Lombard, IL
Teamsters Local 710
(773) 254-3200
4217 S Halsted St
Chicago, IL
La Chamba
(312) 666-6900
1102 W 18th St
Chicago, IL
Service Employees International Union Local 1
(312) 240-1600
111 E Wacker Dr Fl 2500
Chicago, IL
United Steel Workers of America Local 2154
(773) 476-0882
5744 S Western Ave
Chicago, IL
Teamsters Local No 786 Welfare & Pension Fund
(312) 666-1875
300 S Ashland Ave
Chicago, IL
Amer Federation of State County & Municipal Employees
(312) 641-3368
Chicago, IL
Liquor and Allied Workers Local No 3
(312) 243-4300
1640 W Van Buren St
Chicago, IL

A gravity meter measures the force of gravity between a mass inside the instrument and the earth. The force of gravity between two objects varies according to the mass of the objects and the distance between them: if either mass increases, the force between them increases; if the distance between them increases, the gravitational force decreases.

Dense rocks attract the mass in the gravity meter more than do those rocks that are less dense. A rock has a positive gravity reading, or anomaly, if it has a value higher than the normal regional gravity value; it has a negative gravity reading, or anomaly, if it has less than the regional gravity value. For example, ultramafic rocks or metallic ore bodies are very dense rocks that give positive gravity readings.

If gravity measurements are the same across a series of crustal blocks, it indicates the region is in isostatic equilibrium. The reverse is true if the gravity measurements are variable. Positive and negative gravity anomalies are often the result of an area's being out of isostatic equilibrium due to tectonic forces that either hold a region up (mountain range) or hold it down (ocean trenches), respectively.

Gravity anomalies on a local scale are usually associated with changes in rock type and can be used as a mapping tool, especially in areas where the bedrock is hidden by sedimentary cover. Metallic ore bodies can also result in a positive gravity feature because the metallic minerals are much denser than the surrounding rock.

Cliffs Notes Online

Featured Local Company

The de Paul Leadership Project

312.362.5519
25 E. Jackson
Chicago, IL
http://leadership.depaul.edu

Related Articles
- Equation Of State Chicago IL
The equilibrium structure of an ordinary star is determined uniquely by its mass and chemical composition. This principle or theorem is not an accident of nature, but is the direct result of how the laws of physics determine the equilibrium structure of a normal star.
- Neutron Stars Chicago IL
- Foundations Of Modern Astronomy Chicago IL
- Responsive Growth Movements Chicago IL
- Structure Of The Galaxy Chicago IL
- How Plants Get Water and Nutrients Chicago IL
- Origin And Evolution Of The Solar System Chicago IL
- White Dwarf Stars Chicago IL
- Type II Supernovae Chicago IL
- The Origin And Evolution Of Galaxies Chicago IL
Related Articles
- Equation Of State Chicago IL
The equilibrium structure of an ordinary star is determined uniquely by its mass and chemical composition. This principle or theorem is not an accident of nature, but is the direct result of how the laws of physics determine the equilibrium structure of a normal star.
- Neutron Stars Chicago IL
- Foundations Of Modern Astronomy Chicago IL
- Responsive Growth Movements Chicago IL
- Structure Of The Galaxy Chicago IL
- How Plants Get Water and Nutrients Chicago IL
- Origin And Evolution Of The Solar System Chicago IL
- White Dwarf Stars Chicago IL
- Type II Supernovae Chicago IL
- The Origin And Evolution Of Galaxies Chicago IL
Related Local Events
Midwest Clinic 63rd Annual Conference
Dates: 12/15/2009 - 12/19/2009
Location: Hilton Chicago Hotel
Chicago, IL
View Details

Ambulatory OB/GYN Nursing Conference
Dates: 11/8/2009 - 11/11/2009
Location: Westin Michigan Ave., Chicago
Chicago, IL
View Details

Latino Book & Family Festival - Chicago 2009
Dates: 11/7/2009 - 11/8/2009
Location: Unity School
Cicero, IL
View Details

Discovering Your Memory Power with Tom Weber
Dates: 10/29/2009 - 10/29/2009
Location: Belvedere Events-Banquets
Elk Grove Village, IL
View Details

Hospital Case Management
Dates: 10/12/2009 - 10/13/2009
Location: Hyatt Regency Chicago
Chicago, IL
View Details

Rss   Delicious   Digg   Add To My Yahoo   Add To My Google   Bookmark   Search Plugin

Topics:
Advertising Family Home Services Real Estate Resources
Business Services Fashion Industrial Goods & Services Retail & Consumer Services
Career Financial Services Insurance Software
Cars Food & Beverage Internet Technology
Computer Hardware Franchise Legal Telecommunications
Construction Health Miscellaneous Trade Shows
Education Holidays Nightlife Travel
Entertainment Home Appliances Online Database Weddings
Environmental Home Electronics Pets World History