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Rock & Mineral Riddles

Riddle

Played 1

About this activity

Guess the mineral terms by meaning

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Dominican Republic

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Rock & Mineral Riddles
 

Rock & Mineral RiddlesOnline version

Guess the mineral terms by meaning

by Emily
1

I am a natural solid, built from minerals, found in Earth’s crust.

Pistas

Found in Earth's crust

Made of minerals

Natural solid

2

I am a natural substance occurring in Earth, with a definite chemical composition.

Pistas

In Earth rocks

Definite composition

Occurs in nature

3

I form when magma or lava cools and hardens.

Pistas

Hardens into rock

From magma or lava

Formed by cooling

4

I am formed from layers of sediment compacted over time.

Pistas

Often contains fossils

Compact on burial

Layered material

5

I am a rock altered by heat and pressure deep inside Earth.

Pistas

New minerals may form

Pressure inside Earth

Change due to heat

6

I describe how hard it is to scratch a mineral.

Pistas

Characterizes minerals

Mohs scale often used

Scratch resistance

7

I describe how a mineral reflects light and shines.

Pistas

Surface reflection

Metallic or nonmetallic

Shine quality

8

I describe how a rock or mineral feels or looks on the surface.

Pistas

Surface appearance

Rough or smooth

Surface feel

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