science m1-2

12 - Volcanoes: Mountains of Fire

Title

Volcanoes: Mountains of Fire

Reading Text

A volcano is like a mountain that opens downward to a pool of molten rock below the surface of the Earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Hot liquid rock under the Earth's surface is called magma. When it comes out of the volcano, it is called lava. Volcanoes can be active, dormant, or extinct. An active volcano can erupt at any time. A dormant volcano has not erupted recently but might again. An extinct volcano will not erupt again. Many volcanoes are in the Ring of Fire, which is an area around the edge of the Pacific Ocean.

Activities

Vocabulary

Definitions:

Text: Hot liquid rock found inside the Earth.
Text: Hot liquid rock found outside on the surface.
Text: A sudden explosion of steam and lava.
Text: Sleeping or not active for a long time.
Text: Turned into liquid by very high heat.

Items:

Label: Magma
Answer: A
Label: Lava
Answer: B
Label: Eruption
Answer: C
Label: Dormant
Answer: D
Label: Molten
Answer: E

Fill In The Blanks:

Before: The hot
After: flowed slowly down the side of the mountain.
Answer: lava
Before: Deep underground,
After: waits to come to the surface.
Answer: magma
Before: The
After: was very loud and sent ash into the sky.
Answer: eruption
Before: The rock became
After: because the temperature was so high.
Answer: molten
Before: That volcano is
After: so it has not erupted for many years.
Answer: dormant

Scrambled:

Text: to be generated
Answer: Hot liquid rock is called magma.
Text: to be generated
Answer: Lava flows down the mountain.
Text: to be generated
Answer: Volcanoes can be active or dormant.
Text: to be generated
Answer: Pressure builds up under the ground.
Text: to be generated
Answer: The Ring of Fire has volcanoes.

Comprehension

Questions:

Text: A volcano opens downward to a pool of water.
Answer: false
Text: Magma is the name for rock when it is outside the Earth.
Answer: false
Text: An active volcano can erupt at any time.
Answer: true
Text: An extinct volcano will probably erupt again soon.
Answer: false
Text: Many volcanoes are located in the Ring of Fire.
Answer: true