Earth and Science Module questions, science homework help

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This is for my Earth and Science class. MODULE 1: What is radioactivity? how does it help determine the age of the rocks? GEOLOGIC TIME If a radioactive element has 1000 number of atoms, how many are left after three half lives? MODULE 2: MINERALS What is specific gravity? How is it measured? If you are given an aluminum cube with length 4 cm, calculate the specific gravity of aluminum? MODULE 3: ROCKS AND ROCK CYCLE What are sedimentary rocks and how are they created? How can you identify them? MODULE 4: RUNNING WATER AND GROUND WATER Explain relationship between runoff and infilteration? MODULE 5: EARTHQUAKES AND Does the velocity of P waves or S waves increase or decrease with increased depth of lithosphere? EARTH'S INTERIOR MODULE 6: OCEANOGRAPHY If echo sounder sends a sound wave at a speed of 2000 meter/second and it comes back in 6 seconds, what is the depth of ocean? ...
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School: UCLA

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Running head:STUDY MODULES


Study Modules



What is radioactivity? How does it help determine the age of the rocks?
Module 1- Geologic Time
Radioactivity is the act of spontaneous emission of can also be defined as
the emission of the ionizing radiations or the particles which are caused as a result of
spontaneous and continuous atomic nuclei disintegration (Povinec, Hirose, & Aoyama,
2013). Radioactivity is significant in the determination of the age of rocks and fossils through
the radiometric age dating system. For the radioacti...

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