WorksheetsMinerals and Rocks Quiz 4
Total questions: 20
Worksheet time: 10mins
What property of a mineral is calculated by dividing its mass by its volume?
Hardness
Luster
Density
Streak
What term describes a mineral's resistance to being scratched?
Cleavage
Fracture
Hardness
Density
The Mohs hardness scale ranks minerals from softest to hardest, ranging from which two numbers?
0 to 5
1 to 10
10 to 100
5 to 10
What determines a mineral's hardness?
The amount of water it contains.
The strength of the bonds between its atoms.
How many colors it has.
How reflective its surface is.
If a mineral has cleavage (breaks along flat surfaces), it means the bonds between its atoms are weakest in which direction?
All directions
Some directions
Only vertically
Never
If a mineral breaks in an irregular way (fracture), it means the bonds joining its atoms are fairly equal in strength in which direction?
All directions
Only one direction
Vertical directions
Horizontal directions
A rock is a solid that forms naturally and contains how many minerals?
Only one mineral.
Two or more minerals.
No minerals at all.
Only diamond.
Besides cooling molten rock, what is one way minerals like halite (table salt) can form?
When rocks are squeezed deep underground.
When water evaporates.
When plants decompose.
When wind blows sand away.
Silicates are the most common mineral group because they contain which two elements?
Carbon and Hydrogen
Iron and Aluminum
Oxygen and Silicon
Sodium and Chlorine
Which mineral belongs to the carbonate group and reacts with weak acid?
Quartz
Talc
Calcite
Diamond
Minerals in the Oxide group are important because they are the source of most what?
Water
Gems
Metals
Salt
What approximate percentage of the rocks in Earth's crust are made up of silicate minerals?
10 percent
46.6 percent
90 percent
100 percent
Which element makes up the greatest percentage (46.6%) of Earth's crust by weight?
Silicon
Oxygen
Iron
Aluminum
What is the second most abundant element (27.7%) in Earth's crust by weight?
Oxygen
Silicon
Iron
Carbon
The 30 minerals that make up most of the rocks in Earth's crust are known as what?
Rare Earth Elements
Precious Gems
Rock-forming minerals
Metal Ores
Why is color not a very reliable property to identify a mineral?
All minerals are clear.
Many minerals come in different colors due to impurities.
The color changes in the dark.
Geologists cannot see color well.
What is the special property called when a mineral glows when exposed to ultraviolet light?
Cleavage
Luster
Fluorescence
Reactivity
When a drop of weak acid is placed on a carbonate mineral like calcite, what visible reaction occurs?
The mineral changes color.
The mineral becomes harder.
Bubbling or fizzing is produced.
The mineral instantly melts.
Which common silicate mineral, often found in granite, breaks into flat, thin sheets (perfect cleavage)?
Diamond
Quartz
Mica
Talc
Which pair of minerals represents the softest (1) and hardest (10) on the Mohs scale?
Gypsum and Quartz
Talc and Diamond
Calcite and Topaz
Mica and Copper
