Volcanoes Reading Comprehension Passage and Questions - PDF ... - Free Printable

It looks like you've uploaded a worksheet titled "VOLCANOES" that includes a reading passage and several questions. Since I can't view images directly, I’ll help you solve the problems based on the text and questions visible in your description.

Let’s go through each section step by step and provide answers with explanations.

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READING PASSAGE SUMMARY

The passage explains:
- Earth has layers: crust, mantle, core.
- The crust is the outermost layer.
- Beneath the crust is molten rock called magma.
- Volcanoes are vents where magma (now called lava) erupts due to pressure buildup.
- When magma comes out, it's called lava; steam and ash also come out.
- Lava cools and builds up into mountains.
- Mauna Loa is the largest active volcano on Earth.
- Olympus Mons on Mars is the largest volcano in the solar system.
- Volcanic eruptions can be dangerous (ash, gases, reduced visibility).
- But they also enrich soil with minerals, benefiting local environments.

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SECTION 1: MULTIPLE CHOICE QUESTIONS

#### Q.1: Outermost layer of Earth is called:
a. Mantle
b. Core
c. Crust ✔
d. Magma

✔ Answer: c. Crust
Explanation: The crust is the thin, solid outer layer of Earth. It's where we live and where volcanoes form.

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#### Q.2: Which is the largest active volcano on our planet?
a. Mauna Loa ✔
b. Krakatoa
c. Mount Tambora
d. Olympus Mons

✔ Answer: a. Mauna Loa
Explanation: The passage states: *"Hawaii's Mauna Loa is the largest active volcano on our planet."* Note: Olympus Mons is the largest volcano overall, but it's not active and is on Mars.

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#### Q.3: Scientists who study Earth's surface are called:
a. Geologist ✔
b. Chemist
c. Physicist
d. Mathematician

✔ Answer: a. Geologist
Explanation: Geologists study Earth’s structure, rocks, and processes like volcanism.

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#### Q.4: What is magma?
a. Molten Rock ✔
b. Name of a volcano
c. Ash and Dust
d. Layer of Earth

✔ Answer: a. Molten Rock
Explanation: Magma is hot, molten rock beneath the Earth’s surface. When it erupts, it becomes lava.

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#### Q.5: Which of the following is NOT a part of a volcano?
a. Lava conduit
b. Volcanic crater
c. Its very hot interior
d. In our solar system, the largest volcano is on Mars

Wait — this question seems misaligned or incomplete. Let's assume it's asking which is not a part of a volcano.

But based on typical volcano parts:
- Lava conduit (tube) – yes
- Volcanic crater – yes
- Interior – yes
- "In our solar system..." – this is a fact, not a part

So likely:

✔ Answer: d. In our solar system, the largest volcano is on Mars
Explanation: This is a statement about Mars, not a physical part of a volcano.

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#### Q.6: When magma comes out of a volcano, it is called:
a. Magma
b. Lava ✔
c. Ash
d. Dust

✔ Answer: b. Lava
Explanation: Once magma reaches the surface, it's called lava.

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SECTION 2: SHORT ANSWER / THINKING QUESTIONS

#### 1. Can we travel to the center of the Earth? Explain your thoughts.

✘ No, we cannot travel to the center of the Earth.
Explanation: The temperatures at the Earth’s core reach up to 13,000°C, and the pressure is extremely high. No human-made materials can withstand such conditions. The deepest humans have drilled is only about 12 km (Kola Superdeep Borehole), while the Earth’s radius is about 6,371 km. So, reaching the center is currently impossible.

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#### 2. What comes out when a volcano erupts?

✔ Lava, ash, steam, gases, and sometimes rocks.
Explanation: During an eruption, molten rock (lava) flows out, along with gas (like sulfur dioxide), water vapor, and fine particles of rock and glass called volcanic ash.

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#### 3. Do you think there is a volcano on the Moon? Explain.

✔ There are no active volcanoes on the Moon today, but scientists believe there were volcanic eruptions in the past.
Explanation: The Moon has large dark areas called *maria*, which are ancient lava plains formed by past volcanic activity. However, the Moon is now geologically inactive, so no volcanoes are erupting now.

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#### 4. Could aliens be hiding in the volcanoes? Explain.

This is opinion-based, but here’s a thoughtful answer:

✔ Unlikely. While volcanoes have extreme heat and gases, life as we know it couldn’t survive inside them. However, some scientists speculate that microbial life might exist in extreme environments (like deep underground or near hydrothermal vents). But there's no evidence of aliens. Volcanoes are too hot and hostile for complex life forms.

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#### 5. What can you infer from this text about living close to a volcano?

✔ Living near a volcano can be both dangerous and beneficial.
Dangers: Eruptions can cause death, destruction, health issues (ash), and environmental damage.
Benefits: Volcanic soil is rich in minerals and very fertile, helping plants grow. Also, geothermal energy can be harnessed.

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#### 6. How is volcanic ash harmful?

✔ Volcanic ash can:
- Contaminate water supplies
- Reduce visibility (causing accidents)
- Make breathing difficult (especially for people with asthma)
- Damage machinery and electronics
- Cause respiratory illnesses

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#### 7. How can volcanoes benefit their local environment?

✔ Volcanoes enrich the soil with minerals, making it very fertile for farming. They also create new land (like islands), and geothermal energy can be used for electricity and heating.

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#### 8. Draw a picture of a volcano.

Since I can't draw, here’s a description for a student to draw:

> Draw a cone-shaped mountain with a circular opening (crater) at the top. Show red/orange lava flowing down the sides. Add steam or smoke rising from the crater. Include small rocks and ash being ejected. Label parts: Crater, Lava, Magma chamber, Vent, Ash plume.

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✔ FINAL ANSWERS SUMMARY

| Question | Answer |
|--------|--------|
| Q1 | c. Crust |
| Q2 | a. Mauna Loa |
| Q3 | a. Geologist |
| Q4 | a. Molten Rock |
| Q5 | d. In our solar system... (not a part) |
| Q6 | b. Lava |

Short Answers:
1. No — too hot and pressurized.
2. Lava, ash, steam, gases.
3. No active volcanoes on Moon now, but past ones existed.
4. Unlikely — too extreme for life.
5. Dangerous but fertile soil.
6. Causes breathing issues, contaminates water, reduces visibility.
7. Fertile soil, geothermal energy, new land.
8. Draw a volcano with labels.

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