Grade 9 REVIEW

When volcanoes eject lava, the eruption will be mainly _____.

• hard

• loud

• quiet

• violent

People were informed through broadcast that a volcano eruption might occur within the coming week. What should residents of dangerous locations do?

• Wait for the next bulletin

• Follow orders to evacuate

• Cover the roof with wet sacks

• Reinforce the roof of their houses

Volcanism does NOT frequently happen:

• at the hotspots

• along the seafloor spreading centers

• convergent boundary where two continental plates collide

• along subduction boundaries where continental and oceanic plates collide

Violent eruptions caused by the introduction of water into superheated magma is called _____.

• lava flow

• caldera collapse

• phreatic eruption

• hotspot volcanism

How does climate change as altitude increases?

• The closer you get to the equator, the hotter it gets.

• The higher you go above sea level, the colder it gets.

• The further you get from the equator, the colder it gets.

• The process by which heat from the sun is trapped near Earth's surface.

The fluid lava flows that make up these volcanoes build up over time in all directions, covering vast distances, and creating domes with wide bases and gentle slopes are known as _____.

• dormant

• cinder cones

• composite

• shield

A group of visible stars that form a pattern as viewed from Earth is called _____.

• stars

• planets

• patterns

• constellations

In some eruptions, mudflows are forced over the _____.

• core

• mantle

• earth’s surface

• ocean bed

Which of the following is TRUE about cinder cones?

• Single eruption of cinders made of basalt.

• Multiple eruptions of cinders made of fluid basalt.

• Single eruption of cinders made of viscous granitic-type lava.

• Multiple eruptions of cinders made of viscous granitic-type lava.

When a volcano shows no signs of life and exhibits evidence of long-term erosion, it would be classified as a:

• active

• dormant

• extinct

• quiescent