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Foundations of Earth Science

Geology

A collection of fundamental geological facts covering Earth's structure, processes, and classification.

earth science geology education
15 Questions Medium Ages 5+ Sep 30, 2026

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About this Study Set

This study set covers Geology through 15 practice questions. A collection of fundamental geological facts covering Earth's structure, processes, and classification. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 15 questions from the Foundations of Earth Science study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which layer of the Earth is composed primarily of liquid iron and nickel?
  • A Inner core
  • B Outer core
  • C Mantle
  • D Crust
2 What type of rock is formed from the cooling and solidification of molten magma or lava?
  • A Sedimentary
  • B Metamorphic
  • C Igneous
  • D Conglomerate
3 Which scale is commonly used to measure the intensity of an earthquake based on energy release?
  • A Mohs scale
  • B Richter scale
  • C Beaufort scale
  • D Fujita scale
4 What is the most abundant gas in the Earth's atmosphere?
  • A Oxygen
  • B Carbon dioxide
  • C Argon
  • D Nitrogen
5 Which mineral is defined as having a hardness of 10 on the Mohs scale?
  • A Quartz
  • B Diamond
  • C Topaz
  • D Corundum
6 What is the process by which rocks are broken down into smaller pieces by wind, water, or ice?
  • A Weathering
  • B Subduction
  • C Metamorphism
  • D Crystallization
7 The San Andreas Fault is an example of which type of plate boundary?
  • A Divergent
  • B Convergent
  • C Transform
  • D Subduction
8 Which geological era is often referred to as the 'Age of Dinosaurs'?
  • A Paleozoic
  • B Mesozoic
  • C Cenozoic
  • D Precambrian
9 What is the primary component of the Earth's continental crust?
  • A Basalt
  • B Granite
  • C Limestone
  • D Obsidian
10 What is the name of the supercontinent that existed approximately 250 million years ago?
  • A Gondwana
  • B Laurasia
  • C Pangaea
  • D Rodinia
11 Which type of rock is most likely to contain fossils?
  • A Igneous
  • B Metamorphic
  • C Sedimentary
  • D Volcanic
12 What phenomenon occurs when soil loses its strength and behaves like a liquid during an earthquake?
  • A Liquefaction
  • B Subduction
  • C Erosion
  • D Deposition
13 Which layer of the Earth is responsible for the movement of tectonic plates?
  • A Lithosphere
  • B Asthenosphere
  • C Outer core
  • D Inner core
14 What is the chemical symbol for the most common mineral group found in the Earth's crust, the silicates?
  • A SiO2
  • B Fe2O3
  • C CaCO3
  • D NaCl
15 Which force is primarily responsible for the formation of fold mountains?
  • A Erosion
  • B Volcanism
  • C Tectonic compression
  • D Glaciation
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