Question

Please answer fast

1. Complete the following sentences using words from the lesson.

a. ___________________ are steep-sided volcanoes that erupt a variety of lavas that are stiff or pasty and do not flow easily.

b. There are four major groups of lava rocks: ___________________, ________________________, _____________________, ____________________.

c. Volcanoes have a ___________________ at the summit formed around a vent through which lava steam, ashes, etc. are expelled.

Answer 1

a. Composite cones, or stratovolcanoes, are steep-sided volcanoes that erupt a variety of lavas that are stiff or pasty and do not flow easily.

b. There are four major groups of lava rocks: basalt, andesite, dacite, rhyolite.

c. Volcanoes have a crater at the summit formed around a vent through which lava, steam, ashes, etc. are expelled.

Answer 2

a. stratovolcano

b. Basalt, andesite, dacite, rhyolite

c. caldera