1. Which statement correctly describes most cinder cone volcanoes?

a. They often take thousands of years to form.

b. They have a single, symmetrical cone at the top.

c. They are one of the tallest types of volcanoes.

d. They emit lava that slowly spreads before cooling.

2. Which of these is a feature of most shield volcanoes?

a. violent eruptions

b. broad base

c. steep sides

d. thick lava

3. Which of these are features of most stratovolcanoes?

a. steep sides near the base with sudden, violent eruptions

b. gentle slope near the base with somewhat quiet eruptions

c. gentle slope near the top with thin, quickly flowing lava

d. steep sides near the top with thick, slow-moving lava

1 a

2 d

3c

1. b. They have a single, symmetrical cone at the top, 2. b. broad base, 3. a. steep sides near the base with sudden, violent eruptions.

Explanation:

The cinder cone is the simplest type of volcano made from the particles and blobs of conglomerate lava ejected from a single vent. The gas is blown violently into the air, and the falling cinders form a cone around the volcano. A shield volcano eruption od mainly composed of basaltic magma, they have a low viscosity and erupts in a relatively gentle stream. Thus do not oppose a serious threat to society. A stratovolcano is also called a composite volcano that is made up of many layers of pumice, tephra, and ash. They form highly viscous lava with steep-sided slopes.