Slowly, deep underground
The igneous rock gabbro is coarse grained and non-vesicular. Both characteristics show that it is an intrusive igneous rock. Intrusive igneous rocks are formed below Earth's surface and slowly (because they're underground). When rocks are intrusive, they are are non-vesicular (no air pockets) because the air has had the time to escape because of the slow cooling time period. Intrusive rocks are also coarse because crystals had the time to form in the rock during that longer cooling time.
Ps. extrusive igneous rocks form rapidly at Earth's surface and basically have tge opposite characteristics for the opposite reasons (ex: vesicular cause air had little time to escape)
Answer:
Five largest cities in the US
1. Alabama
2. Alaska
3. Arizona
4. Arkansas
5. California
Explanation:
Physical features of these cities
1. Alabama: Montgomery is the state capital and site of many landmark civil rights events, like the Montgomery bus boycotts throughout 1955 and 1956 and the Selma-to-Montgomery March for voting rights in 1965.
The nation’s oldest baseball field, Rickwood Field, which opened in 1910, is located in Birmingham.
2. Arizona: Phoenix is the most populous state capital with approximately 1.5 million people living there. According to the National Climatic Data Center, the sun shines on Phoenix for 85 percent of its daylight hours.
3. Arkansas: Little Rock became the capital of the territory of Arkansas in 1821. The name “little rock” comes from the French explorer Bernard de la Harpe. In 1722, he saw rock formations jutting out from the Ouachita Mountains and named one group the big rock and the other the little rock.
4. California: this is the third largest city in the United States. California boasts mountains that are visible from just about anywhere in the state. Two main mountain ranges dominate: the Sierra Nevada and the Coast Range. The Coast Range runs from the northwest all the way down to the Mexican border, across 800 miles of terrain.
A rift valley is formed on a divergent plate boundary, which means that the two plates are
a. moving apart - this is the correct answer!
Rift valleys are often filled with lakes. For example, some scientists suggest that the Dead Sea lies in such a rift valley. Other such lake includes Lake Albert in Congo and Uganda.
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