Rocks Flashcards
1
Q
Igneous rocks
A
- formed for molten lava
- sometimes have tiny crystals and bubbles formed inside the earth
- can have a glassy surface
2
Q
Sedimentary rocks
A
- compressed of grains or fragments from other rocks
- they have ribbon like layers
- they sometimes have fossils of plants or animals
- they usually form in water environments like an ocean or lake.
3
Q
Metamorphic rocks
A
- formed inside the earth from heat and pressure
- they have visible layer that may be bent or distorted
4
Q
Sedimentary to Metamorphic
A
Heat and pressure
5
Q
Igneous to Sedimentary
A
Weathering and cementation
6
Q
Sedimentary to Igneous
A
Melting
7
Q
What type of rock is limestone?
A
Sedimentary
-can have fossils and skeletons
8
Q
What type of rock is conglomerate
A
Sedimentary
-pebbles and sand are visible
9
Q
What type of rock is Basalt?
A
igneous
- bubbles
- usually dark
10
Q
What type of rock is Gneiss?
A
Metamorphic
-bubbles
11
Q
What type of rock is Obsidian?
A
Igneous
-glassy suface
12
Q
What type of rock is Marble?
A
Metamorphic
-swirling colours or not
