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Earth Science Essentials

Earth Science

Test your knowledge on Earth's layers, rocks, weather systems, and geological processes.

earth science geology weather rocks

8 Questions Medium Ages 9+ Oct 4, 2026

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About this Study Set

This study set covers Earth Science through 8 practice questions. Test your knowledge on Earth's layers, rocks, weather systems, and geological processes. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Earth Science Essentials study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which layer of Earth's atmosphere is closest to the ground and contains almost all weather?

A Stratosphere
B Troposphere
C Mesosphere
D Thermosphere

2 What process occurs when plants release water vapor into the air through their leaves?

A Transpiration
B Condensation
C Sublimation
D Runoff

3 Which type of rock forms when molten lava or magma cools and hardens?

A Sedimentary rock
B Metamorphic rock
C Igneous rock
D Fossil rock

4 On the Mohs hardness scale, which is the softest mineral with a score of 1?

A Quartz
B Gypsum
C Talc
D Diamond

5 Fossils of ancient organisms are most commonly found preserved in which type of rock?

A Sedimentary rock
B Igneous rock
C Metamorphic rock
D Volcanic rock

6 What is the name of the ancient supercontinent that existed around 300 million years ago?

A Gondwana
B Pangaea
C Laurasia
D Atlantis

7 Which layer of Earth is at the very center and made mostly of solid iron and nickel?

A Outer core
B Inner core
C Mantle
D Crust

8 What geological process primarily carved out the deep walls of the Grand Canyon over millions of years?

A Wind deposition
B Glacial carving
C River erosion
D Volcanic eruption

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