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
<span>The precambrian period was a time period that happened billions of years ago. Actually, 4.6 billion years, to be exact. The Earth started to form during this period. Layers of rock, elements of the land and waters, and many other things were developed during this time. The atmosphere had a mind of its own, per se, during this time period. It went through many different changes. The atmosphere went from being extremely cold and galactic to warming and having volcanoes, which allowed for an expansion of life forms.</span>
Hydrothermal Vents occur along divergent plate boundaries on the ocean floor. Hydrothermal vent systems give off plumes of hot, mineral-laden water with temperatures as high as 350 degrees Celcius. The water is ejected through a spout known as black smokers. Metal-rich minerals precipitate out of the circling sea water and forms ores of copper, zinc and iron.
Answer:
Option: D. It cooled very slowly.
Explanation:
Iceland is known as the Land of Fire. The country is present in the plate boundary of the North American and Eurasian tectonic plates. Being on the top of the Ring of Fire, it has active volcanoes. Hexagonal basalt columns formed from a volcanic eruption. Basalt columns are the result of a cooling process that changes the appearance of the lava. Basalt is a volcanic rock rich in iron and magnesium created from the heated magma that emerges as lava during an eruption.
The photograph given below is from Icelandic national park Jokulsargljufur.
