Unit 2 Assessment - The Strange Power of Volcanoes

What is the main idea of paragraph 1?

• A volcano was mistaken for something else.

• A volcano created hot melted rock and ash.

• A volcano erupted for three years.

• A volcano formed an island in the sea.

Read this sentence from paragraph 1: "Hot melted rock, called lava, was shooting up to the water’s surface from below." What is the meaning of surface as it is used in this sentence?

• the floor of the ocean

• the middle part of something

• the ocean’s waves

• the top part of something

What details in paragraph 2 support the idea that volcanoes form all over the world? Use two details from the text in your response.

Read this sentence from paragraph 2. They also give us a peek into what goes on below Earth’s surface. What is the meaning of peek as it used in the sentence?

• big hole

• hot rock

• quick look

• small crack

Which statement about volcanoes is NOT true?

• All volcanoes have a chamber filled with magma.

• The eruption of a volcano always produces a gas cloud.

• All volcanoes have a vent that lets smoke, ash, and lava out.

• The gases in a volcano always cause pressure to build up.

According to the author, in what way is lava like honey (paragraph 5)?

• Lava can stick to things.

• Lava can take a while to form.

• Lava can have the same color.

• Lava can flow in the same way.

According to paragraph 6, what effect can volcanoes have on the weather?

• They can make the oceans colder.

• They can make the winters hotter.

• They can make the summers colder.

• They can make the sunlight hotter.

Reread paragraph 6. Then underline two sentences that best support the answer to Part A.

According to the author’s point of view, what makes volcanoes mostly the same?

• the places where they form

• how they work on the inside

• their effect on the weather

• how they look on the outside

Choose two words from the word bank to complete the paragraph about how volcanoes work. Word bank: vent, magma, ash cloud Hot, liquid rock in a _______________________ chamber makes different gases. The gases push up through a pipe in the volcano’s center. The gases and lava come out of a _______________________ in the Earth’s surface.