need help plz:) QUESTION 1 Which of the following statements about the lithosphe

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need help plz:)

QUESTION 1 Which of the following statements about the lithosphere and asthenosphere is true? o a. The Iithosphere is found under the continents and the asthenosphere under the oceans. b. The asthenosphere and ithosphere are equal in thickness. OC. The lilthosphere is composed of silicate and the asthenosphere is composed of iron-nickel. d The asthenosphere is plastic and the lithosphere is rigid. QUESTION 2 The outer layer of the earth composed of solid, rigid rock is the a Lower mantle b outer core. C asthenosphere o d ithosphere

Explanation / Answer

1.The asthenosphere is plastic and the lithosphere is rigid. The asthenosphere lies below the lithosphere and above the mantle.

2. The Earth consists of three layers- lithosphere, asthenosphere and mesosphere. The outermost rigid layer of the earth is called lithosphere.

3. Strong deep earthquakes and volcanism occurs in the convergent boundaries. Here, the plates collide with one another and the heavier plates subsides down the lighter one, creating earthquakes and explosive volcanism.

4. Plates slide past each other in transform boundaries. The plates are separated by a transform plate.

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