1 |
A mixture formed naturally in the earth is known as? |
a rock
a crystal
a mineral
a molecule
|
2 |
A pure crystalline subctance formed naturally in the earth is know as? |
a rock
a solution
a solid
a mineral
|
3 |
What is the study and exploration of caves called. |
grottology
stygology
speleology
littology
|
4 |
Alteration on iron-rich rocks or minerals into other substances due to oxygen. |
saltation
organic activity
dissolutaion
oxidation
|
5 |
Emission of magma onto the earth's surface. |
extrusion
exhumation
intrusion
erosion
|
6 |
A layered rock ersulting from the consolidation of sediment. |
metamorphic rock
intrusive lgneous rock
extrusion lgeous rock
dedimentary rock
|
7 |
Rock formed by cooling and solidification of lava above the earth's surface. |
extrusive lgneous rock
lava
intrusive lgeous rock
metamorphic rock
|
8 |
What is the average distance of the earth from the Moon? |
239,000 miles
317,000 miles
267,000 miles
198,000 miles
|
9 |
What is the average distance of the earthfrom the sun? |
92,960,000 miles
92,472,000 miles
93,126,000 miles
93,368,000 miles
|
10 |
What temperature can the center of earth's core reach up to? |
7000 k
7500 k
7300 k
8100 k
|