Question

ACTIVITY 4 Directions: Answer the following questions, Test – I: Multiple choices. Encircle only the letter of the best answer. 1. The theory of moving lithospheric plates is called a. plate tectonic b. active plate c. volcanism 2. The thicker but less dense crust is called a. oceanic b. continental c. both a &b 3. A geologic process that allows landforms to develop on Earth's surface a. volcanism b. volcanizing c. lava 4. A kind of volcanoes form above the so-called hot spots within the surface a. interplate b. intraplate c. introplate 5. The resting volcanoes a. extinct b. active c. dormant 6. An opening on Earth crust where molten or hot rocks and other pyroclastic materials are ejected a. Volcano b. Mountain range c. Tsunami​

Answer 1

Answer:

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Answer 2

Answer:

1. a) Plate tectonic.

2. b) Continental.

3) a) Volcanism.

4) b) Intraplate.

5) c) Dormant.

6) a) Volcano.

Explanation:

1) The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken into tectonic plates.

2) Continental crust is typically 40 km (25 miles) thick, while oceanic crust is much thinner, averaging about 6 km (4 miles) in thickness. The effect of the different densities of lithospheric rock can be seen in the different average elevations of continental and oceanic crust.

3) Geology is the study of the Earth and its history.

Geologic Processes effect every human on the Earth all of the time, but are most noticeable when they cause loss of life or property. Such life or property threatening processes are called natural disasters.

4) A third tectonic setting where volcanism occurs is called intraplate- or hot-spot-volcanism, which describes volcanic activity that occurs within tectonic plates and is generally NOT related to plate boundaries and plate movements.

5) Dormant or resting volcanoes are not currently erupting but are considered likely to do so.

6) A volcano is an opening in a planet or moon’s crust through which molten rock and gases trapped under the surface erupt, often forming a hill or mountain.