Volcano

What is magma?

• small rock

• plates that meet

• pieces of the earth's crust

• molten rock inside of a volcano.

What is dormant volcano?

• molten rock

• the center of a volcano

• will never erupt again

• a volcano that is sleeping, but could erupt again

Temperature _________ as you go deeper into the earth.

• increases

• decreases

• stays the same

• goes up and down depending on the layer

Once magma reaches earth’s surface it is called _________.

• lava

• rock

• silica

• molten

What type of volcano is shown in the picture?

• cinder cone

• composite volcano

• shield volcano

• silica content

Which of the following characteristics of a volcano depends on its magma emission?

• age

• size

• shape

• location

Which of the following factors associated with huge volcanic eruptions may cause the decrease in the Earth’s average temperature for a few years?

• heat

• light

• acid rain

• volcanic ash

A thick layer of volcanic ash can be heavy enough to collapse the roofs of buildings because ash ________.

• is solid.

• cannot be blown by winds

• becomes heavier as it cools

• consists of tiny fragments of rocks that becomes heavy as they pile up.

Which of the following is an inactive volcano in the Philippines?

• Urot

• Taal

• Mayo

• Kanlaon

Which type of volcanoes have broad bases and steep sides, usually have a large crater at the top and are formed by alternating layers of magma and ash?

• Caldera

• cinder cone

• shield volcano

• composite volcano