Volcanoes

The image shows the locations of volcanoes around the world. Which statement is supported by the information in the image?

• Many volcanoes are on the eastern coast of Asia.

• Most volcanoes are in the center of continents.

• No volcanoes are found in the middle of the ocean.

• Many volcanoes are on the eastern coasts of North and South America.

Tags

NGSS.MS-ESS2-3

Which statement describes convergent boundaries?

• Rifts form

• subduction occurs

• plates push away from each other

• mid-ocean ridges mark locations

Which feature forms at a divergent boundary?

• rift valley

• island arc

• subduction zone

• collision zone

Which feature is created on the exterior of a volcano when it erupts?

• magma chamber

• crater

• hot spot

• boundary

Which event causes a volcanic eruption?

• magma turning into lava

• water being heated by magma

• explosions occurring in magma chambers

• magma cutting through older rocks

Which statement explains what happens as magma rises inside a volcano?

• gases will contract in the chamber

• the pressure of the gas will disappear

• the magmatic pressure decreases

• magma moves to other chambers

A volcano erupts, and lava flows down a mountainside. Which statement best describes the eruption?

• This is a quiet eruption caused by low viscosity magma.

• this is an explosive eruption caused by high viscosity magma

• this is a quiet eruption with lava spewing out violently

• this is an explosive eruption during which gases bubble out gently

Mount St. Helens is a volcano that erupted with great force in 1980. Which phrase best describes this eruption?

• quiet eruption

• gentle lava flow

• magma low in silica

• high viscosity magma

The image shows a volcano erupting at night in Russia. Which label best describes this image?

• explosive eruption - beware of ash!

• gases push out magma with a great force!

• volcano quietly erupts due to low viscosity magma!

• high silica content of magma results in lava reaching sea level by morning!

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

Which word identifies one stage of volcanic activity?

• dormant

• explosive

• underground

• quiet