Question

An igneous rock forms quickly. Which characteristic could the rock have?(1 point)
Responses

smooth, sharp texture
smooth, sharp texture

small sand grains
small sand grains

large mineral crystals
large mineral crystals

evidence of folding
Answer
Which type of rock can be foliated?(1 point)
Responses

metamorphic rock
metamorphic rock

sedimentary rock
sedimentary rock

igneous rock that cools slowly
igneous rock that cools slowly

igneous rock that cools quickly
Answer
Amber, which is made from hardened tree resin, is a gem. Although amber is often used in jewelry, it is not a mineral. Which statement explains why amber is not a mineral?(1 point)
Responses

It is not valuable.
It is not valuable.

It is not natural.
It is not natural.

It is not solid.
It is not solid.

It is not inorganic.
Answer
Which option is a mineral?(1 point)
Responses

wood
wood

pearl
pearl

coal
coal

garnet
Answer
Minerals must have atoms that are tightly packed together and cannot move freely. Which part of the definition of a mineral does this describe?(1 point)
Responses

the requirement that minerals must be solids
the requirement that minerals must be solids

the requirement that minerals must have a defined crystalline structure
the requirement that minerals must have a defined crystalline structure

the requirement that minerals must have a defined chemical composition
the requirement that minerals must have a defined chemical composition

the requirement that minerals must be naturally occurring
Answer
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Answered by GPT-4o mini
An igneous rock that forms quickly would typically have a **smooth, sharp texture** or **small sand grains**. This is because rapid cooling often results in smaller crystals or a glassy texture. Therefore, the best response from your options would be **small sand grains**.

Large mineral crystals and evidence of folding are not characteristic of quickly formed igneous rocks; large crystals indicate slow cooling, and folding is associated with metamorphic processes.
Answered by GPT-4o mini
The type of rock that can be foliated is **metamorphic rock**. Foliation is a texture that occurs in metamorphic rocks due to the alignment of minerals under directed pressure, resulting in a layered or banded appearance. Sedimentary rocks and igneous rocks (whether they cool slowly or quickly) do not exhibit foliation.
Answered by GPT-4o mini
The correct statement that explains why amber is not a mineral is **It is not inorganic.** Minerals are defined as naturally occurring, inorganic solids with a specific chemical composition and crystalline structure. Since amber originates from organic tree resin, it does not fit the inorganic criterion necessary to be classified as a mineral.
Answered by GPT-4o mini
The option that is a mineral is **garnet**.

- Wood is an organic material and not a mineral.
- Pearl is an organic substance produced by mollusks and is classified as a biogenic material, not a mineral.
- Coal is derived from organic matter and is also not classified as a mineral.

Garnet, on the other hand, is a naturally occurring inorganic crystalline solid with a specific chemical composition, making it a mineral.
Answered by GPT-4o mini
The part of the definition of a mineral that describes atoms that are tightly packed together and cannot move freely is **the requirement that minerals must be solids**.

Minerals exist in a solid state, which means that their atoms are arranged in a fixed, tightly packed structure. This characteristic sets them apart from liquids and gases, where atoms and molecules can move more freely.
Answered by GPT-4o mini
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