Advanced Earth Science

Earth Science

A rigorous examination of Earth science topics including petrology, geochronology, structural geology, oceanography, and atmospheric physics.

geology geochemistry oceanography atmospheric-science

12 Questions Hard Ages 16+ Oct 29, 2026

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About this Study Set

This study set covers Earth Science through 12 practice questions. A rigorous examination of Earth science topics including petrology, geochronology, structural geology, oceanography, and atmospheric physics. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 12 questions from the Advanced Earth Science study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which metamorphic facies is characteristically defined by the presence of glaucophane under high-pressure and low-temperature conditions?

A Greenschist facies
B Blueschist facies
C Eclogite facies
D Granulite facies

2 What primary seismic wave behavior occurs at the Gutenberg discontinuity located at a depth of approximately 2,900 kilometers?

A P-waves double in velocity
B S-waves completely stop propagating
C P-waves reflect without refraction
D S-waves accelerate significantly

3 In Bowen's reaction series, which silicate mineral crystallizes first from a cooling basaltic magma along the discontinuous branch?

A Pyroxene
B Biotite
C Amphibole
D Olivine

4 In rubidium-strontium (Rb-Sr) geochronology, which isotope ratio is plotted on the x-axis of an isochron diagram?

A 87Sr/86Sr
B 87Rb/86Sr
C 87Rb/87Sr
D 86Sr/87Rb

5 What is the approximate orbital period length of Earth's axial tilt (obliquity) variation in Milankovitch cycles?

A 21,000 years
B 41,000 years
C 100,000 years
D 400,000 years

6 A pronounced negative europium anomaly in rare-earth element (REE) rock profiles is primarily caused by the removal of which mineral during fractional crystallization?

A Quartz
B Plagioclase feldspar
C Garnet
D Zircon

7 What is the name of the current geomagnetic polarity chron that began approximately 780,000 years ago?

A Matuyama
B Gauss
C Brunhes
D Gilbert

8 Which atmospheric boundary layer contains the coldest naturally occurring temperatures on Earth, dropping to roughly -90°C?

A Tropopause
B Stratopause
C Mesopause
D Thermopause

9 Where is the majority of Antarctic Bottom Water (AABW), the densest water mass in the ocean, primarily produced?

A Weddell and Ross Seas
B Drake Passage
C Subantarctic Front
D Agulhas Basin

10 The Afar Triple Junction in East Africa is classified as which specific type of tectonic triple junction?

A Ridge-Ridge-Ridge (R-R-R)
B Trench-Trench-Trench (T-T-T)
C Transform-Transform-Transform (F-F-F)
D Ridge-Trench-Transform (R-T-F)

11 In a classical Bouma sequence representing a turbidite sediment layer, which division lies at the very base (Division A)?

A Laminated siltstone
B Massive to graded sandstone
C Parallel-laminated sandstone
D Pelagic mudstone

12 On a glaciated roche moutonnée feature, how are the stoss (upstream) and lee (downstream) sides distinctively formed?

A Stoss side is steep and plucked; lee side is smooth and abraded
B Stoss side is smooth and abraded; lee side is steep and plucked
C Both sides are steep and plucked
D Both sides are smooth and abraded

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