Answer:
1384.83 miles .
Explanation:
1 .
Conversion of kilometer to mile ,
1 kilometer is equal to 0.621 mile ,
The lower mantle is 2230 km can be converted to miles , by simply multiplying by the value 0.621 .
Hence ,
the conversion is done as follows ,
2 .
Lower mantle = 2230 km = 2230 * 0.621 = 1384.83 miles
hence , the value of lower mantle is 2230 km and in terms of mile is equal to 1384.83 miles .
The physical feature that can be found throughout the Yucatan Peninsula are Cenotes. These are caves and sinkholes that were used to access the groundwater and for sacrificial offerings by the Maya. These features are natural swimming holes.
Answer:
Explanation:
1. Underwater volcano that never reaches above sea level
GUYOT
2. Underwater volcano whose top is eroded flat by waves
SEAMOUNT
3. Hot spring on rolling hills, this a dip between hills
SYNCLINE
4. volcanic neck break between rocks where a hanging wall rises relative to a footwall
REVERSE FAULT
5. Magma that filled the central vent that remains after the volcano has eroded
VOLCANIC NECK
6. Natural hot water on Earth's surface containing many minerals
HOTSPRING
7. A raised footwall block between normal fault creates this
HORST
8. Less than a mile in diameter; looks like a bowl at the top of a volcano
CALDERA
9. Over 1 mile in diameter; looks like a bowl over a volcano
CRATER
10.Created when a block with hanging walls slips down between normal faults
GRABEN
Answer:
A) sea level drops; land subsides
Explanation:
The sea is the final destination of all streams on land. All streams empty into seas which are the basins that collects all terrestrial materials.
The base level is the lowest level to which a river can erode its channel. The base level is greatly influenced by what happens to a sea.
When a river reaches its base level, erosion ceases. If a river is young and set above its base level, we see a rapid rate of erosion.
A sea, the final basin of depostion of rivers controls the base level to a very large extent. When there is a tectonic movement and a sea subsides. It becomes more deeper and lower. Sea level also falls and materials grades seaward. A river would cut rapidly along its channel and its bed to measure up to the level of the ocean.
Therefore, we see a very rapid rate of erosion of channels when sea level falls and the earth sags downward. This would lead to a lower base level.
When sea level rises and there is a tectonic uplift, rivers erode their channels less and begins to aggrade materials. The base level also rises.