Minerals
Igneous Rock
Sedimentary Rock
Metamorphic Rock
Weathering, Erosion, and Deposition
100
What property of minerals is being tested?
Hardness
100
How are igneous rocks formed?
Molten rock that cools and hardens
100
Small pieces of weathered rock are called _________
Sediments
100
Where are metamorphic rocks formed?
Deep inside the crust of the earth
100
What is weathering?
The breaking down of rock into smaller pieces called sediments
200
How light reflects off the surface of a mineral
luster
200
What kind of rock is being formed in this picture?
Igneous rock
200
Sedimentary Rocks are also called:
a. changed rocks
b. layered rocks
c. fire formed rocks
b. layered rocks
200
How are metamorphic rocks formed?
Heat and pressure during millions of years
200
Is this picture representing an event of weathering or erosion?
Erosion. The sediments are moving downhill due to the effect of gravity
300
Scale used to measure the hardness of a mineral
Mohs' Scale
300
Where is extrusive igneous rock formed?
on the earth's surface
300
remains of plants and animals that died millions of years ago
fossils
300
Are metamorphic rocks the slowest or the fastest rock formed?
Slowest
300
Describe how this picture illustrates the process of deposition
The river slows down and the force of the water is not enough to carry the sediments, which drop to the riverbed.
400
The color of a mineral in powder form
Streak
400
Where is intrusive igneous rock formed?
Under the surface of the earth
400
How can you tell this is a sedimentary rock?
It has layers
400
Why are metamorphic rocks nicknamed changed rocks?
Because they form from other rocks as they are buried deep in the crust of the earth and undergo chemical changes over millions of years
400
These rock formations are called hoodoos. Which process created these hoodoos?
Weathering as the wind flings sand on the rock, chipping away layers.
500
A mineral is said to have ________ if it breaks in a specific pattern, and it is said to have __________ if it breaks in jagged edges.
A mineral is said to have CLEAVAGE if it breaks in a specific pattern, and it is said to have FRACTURE if it breaks in jagged edges.
500
Which conditions will produce an igneous rock with small crystals and holes?
Fast cooling above the surface of the earth
500
How are sedimentary rocks cemented?
With the pressure of other sediments squeezing the air and water off the lower sediments
500
Which characteristic helps identify this rock as metamorphic?
Glittery, shiny crystals
500
What process is this diagram illustrating?
Ice wedging, a form of mechanical weathering