Exploring Planet Earth

Earth Science

A foundational quiz covering the basic principles of Earth Science, including geology, meteorology, and the water cycle.

Geology Atmosphere Water Cycle

8 Questions Easy Ages 13+ Apr 5, 2026

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About this Study Set

This study set covers Earth Science through 8 practice questions. A foundational quiz covering the basic principles of Earth Science, including geology, meteorology, and the water cycle. 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 Exploring Planet Earth study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which layer of the Earth is the outermost and thinnest?

A Crust
B Mantle
C Outer Core
D Inner Core

2 What was the name of the supercontinent that existed about 300 million years ago?

A Gondwana
B Pangea
C Laurasia
D Rodinia

3 What gas makes up approximately 78% of Earth's atmosphere?

A Oxygen
B Carbon Dioxide
C Nitrogen
D Argon

4 Which type of rock forms from the cooling and solidification of molten magma or lava?

A Igneous
B Sedimentary
C Metamorphic
D Sandstone

5 The process by which water vapor changes into liquid water droplets to form clouds is called:

A Evaporation
B Condensation
C Precipitation
D Transpiration

6 What instrument is used to measure and record the vibrations of an earthquake?

A Barometer
B Anemometer
C Hygrometer
D Seismograph

7 Which process describes the breaking down of rocks at the Earth's surface by wind, water, or ice?

A Subduction
B Erosion
C Weathering
D Deposition

8 What is the primary driving force behind the movement of Earth's tectonic plates?

A Ocean currents
B Mantle convection
C Moon's gravity
D Earth's rotation

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