https://padlet.com/chandler503335/koc6ljkhgng8 How Scientist Measure the Earth's Age en-us 2016-07-07 14:27:25 UTC 2025-10-23 20:49:54 UTC hello@padlet.com chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116068830 Scientists use three techniques to figure out the Earth's age. Scientist use radiation measurement, stratigraphic superstition, and the fossil record. The scientists have discovered that the Earth is about 4.6 billion years old.]]> 2016-07-07 14:28:38 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116068830 chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069264 The discovery of natural radioactive decay in 1896 opened the door. In 1905, Lord Rutherford made the first prediction of how old the Earth was by using radioactivity. This allow scientist to prove how old fossils and rocks are.]]> 2016-07-07 14:37:26 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069264 chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069479 http://dnr.louisiana.gov/assets/TAD/education/BGBB/1/measuring.html
http://image.slidesharecdn.com/originsoflife3-ageofearth-130223212739-phpapp02/95/origins-of-life-3-age-of-earth-3-638.jpg?cb=1361654930

]]> 2016-07-07 14:41:22 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069479 chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069521 There are six principles for stratigraphic superstition. 1. A higher rock unit is younger than a lower one.
2. Rock layers were originally deposited close to the horizontal.
3. A rock layer continues laterally unless their is a structure or change that prevents its extension.

]]> 2016-07-07 14:42:07 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069521 chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069821 4 A structure that cuts another is younger than the structure that it cut.
 5 A structure that is included in another is older than the including structure. 
6. Process operating in the past were defined by the same laws of physics.]]> 2016-07-07 14:48:04 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069821 chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069978 http://www.crowcanyon.org/images/graphics/stratigraphic_profile.jpg
http://www.globalchange.umich.edu/fossil1.jpg

]]> 2016-07-07 14:51:17 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116069978 chandler503335 https://padlet.com/chandler503335/koc6ljkhgng8/wish/116070005 Scientist realized that fossils occurred in consistent order. The study of the succession of fossils and its radioactive dating is called biostratigraphy. Each increment of time can be characterized by the assemblage of different fossil organisms. These zones can be traced regionally and then globally.]]> 2016-07-07 14:51:55 UTC https://padlet.com/chandler503335/koc6ljkhgng8/wish/116070005