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Little Explorers of the Earth

Geology

A fun introduction to rocks, minerals, and the layers of our planet.

rocks earth science

10 Questions Medium Ages 5+ Oct 3, 2026

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About this Study Set

This study set covers Geology through 10 practice questions. A fun introduction to rocks, minerals, and the layers of our planet. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 10 questions from the Little Explorers of the Earth study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the very hot, melted rock found deep inside the Earth called?

A Magma
B Ice
C Sand
D Water

2 Which of these is the hardest natural substance found on Earth?

A Chalk
B Diamond
C Clay
D Salt

3 What do we call a scientist who studies rocks and the Earth?

A Astrobiologist
B Geologist
C Botanist
D Zoologist

4 Which type of rock is formed from cooling magma or lava?

A Igneous
B Sedimentary
C Metamorphic
D Chalk

5 What is the outer, solid layer of the Earth that we walk on called?

A The Core
B The Mantle
C The Crust
D The Atmosphere

6 Which type of rock is often made of layers of sand, mud, and pebbles pressed together?

A Igneous
B Sedimentary
C Metamorphic
D Crystal

7 What are the natural, solid materials that make up rocks called?

A Minerals
B Clouds
C Plastic
D Wood

8 What is the name of the process that breaks rocks into smaller pieces like sand?

A Erosion
B Melting
C Freezing
D Heating

9 Which layer of the Earth is located right in the very center?

A The Crust
B The Mantle
C The Inner Core
D The Surface

10 What kind of rock is formed when existing rocks are changed by great heat and pressure?

A Metamorphic
B Igneous
C Sedimentary
D Pebble

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