Geo 110 Study

Order the events chronologically that occurred in the formation of our Solar System. a proto sun formed planetesimals collected to form protoplanets an accretionary desk formed rings formed in protoplantery disk

an accretionary desk formed, a proto sun formed, rings formed in protoplantery disk, planetesimals collected to form protoplanets

Rank the order in which these events happened young to old: nuclear fusion of proto sun formation of earth big bang formation of moon

formation of moon, formation of earth, nuclear fusion of proto sun, big bang

Which of the following statements regarding the Big Bang theory are true? Choose one or more: A.The Universe is considerably older than Earth. B.Earth formed through a series of violent collisions. C.Meteors were responsible for the extinction of the dinosaurs. D.Earth is much older than the rest of the Universe. E.All stars will end their lives explosively as supernovae. F.All matter in the Universe was once confined to a single point. G.Earth and the Universe formed at about the same time. H.There is no way of knowing how old the Universe might be.

A.The Universe is considerably older than Earth. F.All matter in the Universe was once confined to a single point.

Beneath the continents, seismic velocities in the mantle increase with depth because the mantle becomes Choose one: A. less rigid. B. less compressible. C. less dense. D. hotter.

B. less compressible.

Which of the following statements about differentiation are true? Choose one or more: A.The core formed as a result of differentiation. B.The mantle formed as a result of differentiation. C.The Moon formed as a result of differentiation. D.The Earth is round because of differentiation.

A.The core formed as a result of differentiation. B.The mantle formed as a result of differentiation.

What information can meteorites provide about Earth? Choose one or more: A.the average composition of the whole Earth B. the composition of Earth's core C.changes in Earth's orbit D.the composition of Earth's crust E.Earth's age

A.the average composition of the whole Earth B. the composition of Earth's core E.Earth's age

Which of the following statements is true? Choose one: A. Seismic-wave velocity cannot change (increase or decrease) as the waves pass through different rock types. B. P-waves in a porous sandstone will move more slowly than P-waves traveling through a crystalline rock. C. Seismic waves travel faster in liquids than through solids. D. Both P- and S-waves can travel through liquids.

B. P-waves in a porous sandstone will move more slowly than P-waves traveling through a crystalline rock.

Why does the line for S-wave velocity disappear in the outer core?Choose one: A. The outer core is too cold for the S-waves to pass through it. B. S-waves do not travel through liquids, and the outer core is liquid. C. The outer core is composed of solid iron-nickel and S-waves can't travel through it. D. S-waves travel more slowly than P-waves and don't reach the outer core in time.

B. S-waves do not travel through liquids, and the outer core is liquid.

The boundary separating the crust from the mantle is called the Choose one: A. asthenosphere. B. lithosphere. C. heliosphere. D. Moho.

D. Moho.

How do seismic waves tell us the Earth's outer core is liquid?Choose one: A. P-waves can travel through the inner and outer parts of the core. B. S-waves move slower through the outer core. C. S- and P-wave velocities increase dramatically at the core-mantle boundary. D. S-waves can't travel through liquid, which creates a large shadow zone when waves travel through the Earth. E. P-waves refract around the Earth's outer core.

D. S-waves can't travel through liquid, which creates a large shadow zone when waves travel through the Earth.

The low-velocity zone (LVZ), found 100 to 200 km beneath ocean crust, represents Choose one: A. the crust-mantle boundary. B. a particularly strong layer in the Earth's interior. C. the upper part of the lithosphere. D. conditions where mantle peridotite partially melts and fills voids between grains.

D. conditions where mantle peridotite partially melts and fills voids between grains.

Atoms that are heavier than iron are generally produced by Choose one: A. the Big Bang. B. fission reactions within a star. C. normal fusion reactions during the lifetime of the star. D. high-energy fusion reactions during the explosion of supernovae.

D. high-energy fusion reactions during the explosion of supernovae.

The Earth's magnetic field is generated by which of the following layers?Choose one: A. crust B. mantle C. inner core D. outer core E. atmosphere

D. outer core