Mineral And Rock Properties Question Preview (ID: 39618)

A Review Of The Properties That We Can Test For Minerals And Rocks.

When you scratch a rock with your fingernail, you are testing its:
a) luster
b) texture
c) streak
d) hardness

Which material would you need to perform the streak test?
a) a white porcelain tile
b) a shiny copper penny
c) a bottle of acid
d) a magnifying glass

Shiny and dull are two examples of a rock's:
a) streak
b) texture
c) luster
d) color

When a mineral breaks and its pieces have rough, pointy edges:
a) It has fracture.
b) It has cleavage.
c) It has fracture and cleavage.
d) None of these answers are correct.

How well a mineral reflects light is:
a) its reactivity
b) its luster
c) its cleavage
d) its texture

Which describes the texture of gold?
a) Gold can be scratched by a nail.
b) Gold is shiny when you shine a light on it.
c) Bubbles do not form when acid is dropped onto a piece of gold.
d) Gold feels smooth when you touch it.

Which describes the streak of pyrite (fool's gold)?
a) When pyrite breaks it forms into pieces that have rough, pointy edges.
b) When pyrite is rubbed against a porcelain tile it leaves a black mark.
c) When pyrite is held up to the light, it looks shiny.
d) Pyrite has a gold color.

You try to scratch quartz with your fingernail, but you don't leave a mark on the rock. You just tested quartz's:
a) hardness
b) streak
c) fracture
d) cleavage

This describes how a mineral reflects light:
a) cleavage
b) fracture
c) luster
d) texture

Mica can be broken into pieces that have smooth, flat sides because it has:
a) fracture
b) cleavage
c) luster
d) streak

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