Question

Question 71 pts

What is an isotope?

Group of answer choices

An atom that has more or fewer neutrons than it typically does

An atom that has double the protons of a stable atom

A nucleus of an atom that has split during the decay process

An atom that has more or fewer electrons than it typically does

Flag this Question

Question 82 pts

When the radiometric clock starts ticking in zircon minerals, there is 100% of the unstable radiometric U-235 and 0% of the stable Pb-207.

After testing in a lab, there is 25% of the parent radiometric isotope and 75% of the daughter isotope. If the half-life of U-235 is 704 million years, then how old is the mineral?

Group of answer choices

1,056 million years old

176 million years old

1,408 million years old

352 million years old

2,112 million years old

Flag this Question

Question 91 pts

How do we know that Earth is 4.6 billion years old when no known rocks are left from that time? Scientist use _________.

Group of answer choices

uranium-lead radiometric dates from meteorites

relative dating techniques such as cross-cutting relationships

relative dating techniques in combination with carbon dating.

the fossil record and the principle of superposition.

Flag this Question

Question 101 pts

Fossils that are good index fossils have _______________.

Group of answer choices

wide range of time in which they exist and wide geographic distribution.

wide range of time in which they exist and small geographic distribution.

easy to identify features and are found everywhere.

narrow range of time in which they exist and wide geographic distribution.

Flag this Question

Question 111 pts

________ is a technique where the decay rate of radioactive isotopes is measured and used to determine the age of a geologic material.

Group of answer choices

Stratigraphic principles

Electron capture

Half-life

Radiometric dating

Ion exchange

Flag this Question

Question 121 pts

The first cells were                            [ Select ]                       ["prokaryotic cells", "eukaryotic cells"]         and are characterized by                            [ Select ]                       ["DNA confined to the nucleus and organelles like mitochondria", "free floating DNA and no nucleus or organelles"]         .

Flag this Question

Question 131 pts

The Hadean is characterized by _______.

Group of answer choices

First life like in the form of cyanobacteria

First oxygen rich atmosphere and liquid water

abundant bombardment and partially molten surface

Ediacaran Fauna and Eukaryotic cells

Flag this Question

Question 141 pts

It is thought that water on the Earth's surface came from _______.

Group of answer choices

the early atmosphere where it was initially a vapor due to the high temperatures

volcanoes, meteorites, or comets

condensation of gases

rifting along the plate boundaries

Flag this Question

Question 152 pts

The Mesozoic Era, when dinosaurs ruled,  ended with ______.

Group of answer choices

a rapid increase in volcanism in Siberia

over hunting by early humans

collision with another planet

rapid greenhouse gas release due to volcanic burning of coal

a meteor collision

Flag this Question

Question 162 pts

In contrast to Darwin's ideas, Curvier explained extinction and fossils with __________________.

Group of answer choices

gradual evolutionary change over time.

tectonic uplift of the Alps.

catastrophic floods.

lowering sea-level due to melting glaciers.

Flag this Question

Question 171 pts

How did reptiles evolve from fish?

Group of answer choices

ray-fined fish evolved to reptiles with the amniotic egg, then they evolved back into the water as amphibians.

ray-fined fish evolved to amphibians with features.

lobe-fined fish evolved to amphibians then reptiles with the amniotic egg.

amphibians evolved to lobe-fined fish then reptiles with the amniotic egg.

Flag this Question

Question 181 pts

What are the two main pieces of evidence (one chemical and one biological) suggesting that a collision with a large object like a giant meteorite caused the K-Pg Boundary mass extinction that killed off the dinosaurs?

Group of answer choices

high uranium concentrations and low pH of soil.

sterile chemical signature, shocked quartz, and deformed dinosaur bones.

soils devoid of life and a sterile chemical signature.

iridium and the disappearance of fossils above the layer.

Flag this Question

Question 191 pts

If stress are the forces applied to a rock, then strain is ______.

Group of answer choices

the decrease of stress

the increase of stress

the deformation of the rock

the melting of the rock under intense metamorphism

Flag this Question

Question 202 pts

When a rock bends this is called                            [ Select ]                       ["ductile deformation", "plastic deformation", "brittle deformation"]         , when it breaks this is called                            [ Select ]                       ["ductile deformation", "brittle deformation", "elastic deformation"]         .

Flag this Question

Question 211 pts

A low temperature rock near the Earth’s surface is more likely to have_____ due to its low temperature.

Group of answer choices

brittle deformation

elastic deformation

plastic deformation

ductile deformation

Flag this Question

Question 221 pts

Folds like anticlines and synclines are produced by ____.

Group of answer choices

erosion

tectonic shear

tectonic compression

tectonic extension

Flag this Question

Question 231 pts

What does a normal fault indicate about the past tectonic forces?

The Wasatch fault and most faults in the Basin and Range Physiographic Province are this type of fault.

Group of answer choices

That the crust was stretching from tension

That the crust was shearing in a left-lateral fault

That the crust was shearing in a right-lateral motion.

That the crust was compressing from convergence

That the crust formed near a volcanic eruption.

Flag this Question

Question 241 pts

The most powerful earthquakes and tsunamis are most closely associated with this type of tectonic boundary.

Group of answer choices

Transform

Convergent – oceanic to continental

Convergent – continental to continental

Divergent – oceanic and oceanic at mid-oceanic ridge

Divergent – continental rifting

Flag this Question

Question 251 pts

Which of the following would be the most unstable during an earthquake and result in the most ground shaking?

Group of answer choices

Unconsolidated saturated sediments such as artificial fill

Sedimentary rock formations such as shale, sandstone, and limestone.

Unconsolidated dry sediments such as clay, sand, and gravel.

Crystalline bedrock such as granite, schist, and gneiss.

Answer 1

And: 71 Lo tope: each of two oy moye poums of The same element that of proton but different newbers contain eqaul Number The nudei. and hence of neutron In diffey In relative atomic mass but not to cherical property, a radioactive form of an element. In particular po The Ary will be- A nudees of an atom That has spert dening The deeay procees. (C) Ares isotopes Elemmeples :- carbon 12 to carbon-13 carbon-14 * A Natually ocwming isotopes it can be two tupe lig stawe isotopes Lig Radio active isotopes.