Question An igneous rock forms quickly. Which characteristic could the rock have?(1 point) Responses smooth, sharp texture smooth, sharp texture evidence of folding evidence of folding small sand grains small sand grains large mineral crystals

metamorphic rock

It is not inorganic.

garnet

the requirement that minerals must be solids

Which type of rock can be foliated?(1 point)

Responses

igneous rock that cools slowly
igneous rock that cools slowly

sedimentary rock
sedimentary rock

metamorphic rock
metamorphic rock

igneous rock that cools quickly

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 natural.
It is not natural.

It is not valuable.
It is not valuable.

It is not solid.
It is not solid.

It is not inorganic.

Which option is a mineral?(1 point)

Responses

pearl
pearl

coal
coal

wood
wood

garnet
garnet

Question

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

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

the requirement that minerals must be naturally occurring
the requirement that minerals must be naturally occurring

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

To determine the characteristic of an igneous rock that forms quickly, we need to consider the cooling process. When magma cools quickly, as is the case with volcanic eruptions, it does not provide enough time for large mineral crystals to form. Therefore, the characteristic associated with igneous rocks that form quickly would be small sand grains. This is because the time constraint prevents the minerals from growing and arranging themselves into larger crystal structures. So, the correct answer is small sand grains.

large mineral crystals