There are _____ major lithospheric plates. The magnitude of the earthquake is measured on _______ _____. The funnel shaped basin around the vent is called ______. The instrument used to record the vibration of the earthquake is ______. The molten material which comes out on the earth surface is called __________.
Answers
Answer:
1: 7
2. The Richter magnitude
3. A volcanic crater
4. Seismometer
5. Magma/Lava
Explanation:
1. The seven major plates include the African, Antarctic, Eurasian, North American, South American, India-Australian, and the Pacific plates.
2. The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance between the various seismographs and the epicenter of the earthquakes..
3.A volcanic crater is a funnel shaped hollow at the top of the vent. It is formed as lava and gas and ash are blasted upwards from the main vent. Material falls back down to earth around the vent and slowly piles up forming a rim around it.
4.A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. Seismometers are usually combined with a timing device and a recording device to form a seismograph.
5.Magma
Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface. When magma flows onto Earth’s surface, it is called lava.
The answer to your third question is only correct if you mean the vent of volcano.
I hope that the given explanation is clear.
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