Rocks, Soil and Minerals_2

What type of rock is pumice?

• A) Igneous

• B) Sedimentary

• C) Metamorphic

• D) Fossilized

What makes pumice unique among rocks?

• A) Its extreme weight

• B) Its rich mineral content

• C) Its light and porous nature

• D) Its smooth and polished surface

How is pumice typically formed?

• A) By gradual sedimentation of minerals

• B) Through extreme pressure and heat

• C) When molten lava cools very quickly

• D) By the compaction of organic matter

What is the primary reason for pumice's porous and lightweight characteristics?

• A) High metal content

• B) Rapid cooling of lava

• C) Fossilization process

• D) Underground pressure

How is pumice's porous and lightweight nature achieved?

• A) Through intense pressure and heat

• B) By gradual sedimentation of minerals

• C) Rapid cooling of molten lava with trapped gases

• D) Fossilization process

What unique property of pumice allows it to float on water?

• A) High mineral content

• B) Dense composition

• C) Trapped gases and porous structure

• D) Magnetic properties

Besides its use as a body scrub, what is another common application of pumice?

• A) Dentist use Pumice to Polish Teeth

• B) Pencil erasers

• C) Gemstone for jewelry

• D) Musical instrument

• E) Polish furniture and floors

How is basalt typically formed?

• A) By slow cooling and solidification of lava

• B) Through gradual pressure and heat

• C) Rapid cooling of molten lava

• D) By compressing organic matter

What is one common use of basalt in construction?

• A) Polishing jewelry

• B) Testing the purity of gold

• C) Adding strength to structures

• D) Making musical instruments

Where is basalt most commonly found on Earth's crust?

• A) In the atmosphere

• B) In the ocean floor

• C) In the Earth's core

• D) In volcanic regions