Environmental Studies

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What are radioactive decay rates in minerals affected by? A) temperature and pressure B) ... Started by plus1	3 Replies 171 Views	Jul 16, 2018 by rosiehomeworddo
The determination that a granite pluton is not intrusive into overlying sedimentary layers because ... Started by SAVANNAHHOOPER23	1 Replies 130 Views	Jul 16, 2018 by nital
The principle that states that geologic features that cut across rocks must form after the rocks ... Started by Jipu 123	1 Replies 150 Views	Jul 16, 2018 by Smiles0805
Atoms that have the same number of protons and different numbers of neutrons are called A) ... Started by Marty	1 Replies 125 Views	Jul 16, 2018 by chloejackso
Which was not an incorrect assumption or estimated value made by geology professor John Joly to ... Started by RYAN BANYAN	1 Replies 96 Views	Jul 16, 2018 by fauacakatahaias
True or False: Radioactive decay permits geologists to determine the age of some minerals. ... Started by AEWBW	1 Replies 59 Views	Jul 16, 2018 by swimkari
How do geologists know how to determine half-lives and decay-rates? What will be an ideal ... Started by Yolanda	1 Replies 78 Views	Jul 16, 2018 by kiamars2010
True or False: Each radioactive-decay scheme has its own time range of usefulness depending on the ... Started by jman1234	1 Replies 92 Views	Jul 16, 2018 by Athena23
The two keys to determining the absolute age of a rock are A) measuring the abundance of parent ... Started by jwb375	3 Replies 74 Views	Jul 16, 2018 by jlaineee
A uranium-lead age determined from a zircon crystal removed from a sandstone would reflect the time ... Started by altibaby	1 Replies 52 Views	Jul 16, 2018 by JaynaD87
A comparison of ages calculated by carbon-14 analysis with ages known by other means results in ... Started by laurencescou	1 Replies 155 Views	Jul 16, 2018 by vkodali
A rock that is ________ million years old comes from the Archean Eon. A) 4,060 B) 30 C) 500 ... Started by james9437	1 Replies 75 Views	Jul 16, 2018 by Pamela.irrgang@yahoo.com
A rock that is 20 million years old comes from the ________ Period. A) Miocene B) Paleogene ... Started by colton	1 Replies 60 Views	Jul 16, 2018 by morganmarie791
A rock that is 90 million years old comes from the ________ Period. A) Cretaceous B) Mesozoic ... Started by oliviahorn72	1 Replies 63 Views	Jul 16, 2018 by Eunice618
A rock that is 400 million years old comes from the ________ Period. A) Paleozoic B) ... Started by appyboo	1 Replies 62 Views	Jul 16, 2018 by leahm14
A rock that is 2,000 million years old comes from the ________ Era. A) Phanerozoic B) Paleozoic ... Started by Chloeellawright	1 Replies 71 Views	Jul 16, 2018 by jessicaduplan
How do geologists find the relative ages of rocks that are found far apart? What will be an ideal ... Started by gbarreiro	3 Replies 88 Views	Jul 16, 2018 by aidanmbrowne
A rock that is 300 million years old comes from the ________ Era. A) Cenozoic B) Mesozoic C) ... Started by CQXA	1 Replies 77 Views	Jul 16, 2018 by meganmoser117
How are geologic events placed in relative order? What will be an ideal ... Started by waynest	1 Replies 113 Views	Jul 16, 2018 by zenzy
What are the various layers of Earth and what are they made of? Also, are they liquid or solid? ... Started by nummyann	1 Replies 71 Views	Jul 16, 2018 by rleezy04
How do geologists learn about Earth's interior? What will be an ideal ... Started by Haya94	1 Replies 64 Views	Jul 16, 2018 by britb2u
How do we know how to determine velocities of seismic waves in rocks? What will be an ideal ... Started by cagreen833	1 Replies 82 Views	Jul 16, 2018 by nital
There is more than one type of crust on Earth. What are they? How do they differ? What will be an ... Started by cool	1 Replies 144 Views	Jul 16, 2018 by smrtceo
X-rays are not used to study the geology of Earth. Why? A) X-rays only penetrate living flesh. ... Started by mspears3	1 Replies 122 Views	Jul 16, 2018 by vseab
At what depth do diamonds form in Earth? A) 3.6 km B) 8 km C) 50 km D) 150 ... Started by ahriuashd	3 Replies 48 Views	Jul 16, 2018 by choc0chan