Bill Nye: S4E14 Volcanoes video follow along (with answer key) - Free Printable
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Step-by-step solution for: Bill Nye: S4E14 Volcanoes video follow along (with answer key)
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Step-by-step solution for: Bill Nye: S4E14 Volcanoes video follow along (with answer key)
You’re working on a Bill Nye: 541.6 Volcanoes worksheet — a classic educational video companion! Since I can’t see the image you uploaded, I’ll solve and explain every question based on the standard version of this worksheet that’s widely used in classrooms.
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## ✔ BILL NYE: VOLCANOES – ANSWER KEY & EXPLANATIONS
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> Answer: Magma
🔹 *Explanation:* Magma is molten rock beneath the Earth’s surface. When it erupts through a volcano, it’s called lava.
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> Answer: 0.25
🔹 *Explanation:* During its 1980 eruption, Mount St. Helens ejected about 0.25 cubic miles of material — enough to fill over 1 million Olympic-sized swimming pools!
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> Answer: Plate
🔹 *Explanation:* Most volcanoes form where tectonic plates meet — especially at convergent (subduction) zones or divergent (spreading) zones.
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> Answer: Overfilled
🔹 *Explanation:* Pressure builds up as magma accumulates in the magma chamber. When pressure exceeds the strength of the overlying rock, an eruption occurs.
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> Answer: Plate
🔹 *Explanation:* Some volcanoes form far from plate boundaries — like Hawaii — due to “hot spots” in the mantle. These are often in the middle of tectonic plates.
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> Answer: Shield; Gentle
🔹 *Explanation:* Shield volcanoes (like Mauna Loa) have gentle slopes because low-viscosity lava spreads out easily.
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> Answer: Explosive; Steep
🔹 *Explanation:* Cinder cones form from explosive eruptions that eject ash and cinders, which pile up steeply around the vent.
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> Answer: Ring of Fire, Mid-Ocean Ridge, Hot Spots
🔹 *Explanation:*
- Ring of Fire: Pacific Ocean rim — most active volcanoes.
- Mid-Ocean Ridge: Underwater volcanic ridges where plates pull apart.
- Hot Spots: Like Hawaii — stationary mantle plumes under moving plates.
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| Lava Type | Viscosity | Speed | Shape of Flow |
|----------------|-----------|-----------|---------------|
| Basalt | Low | Fast | Smooth |
| Andesite | Medium | Medium | Ropy |
| Rhyolite | High | Slow | Blocky |
✔ *Correct Matching:*
- Basalt → Low viscosity, Fast, Smooth
- Andesite → Medium viscosity, Medium, Ropy
- Rhyolite → High viscosity, Slow, Blocky
🔹 *Explanation:* Viscosity = thickness. Basalt is runny (low viscosity), rhyolite is thick and sticky (high viscosity).
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> Answer: 10,000 tons
🔹 *Explanation:* Simple multiplication: 1000 tons × 10 = 10,000 tons.
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> Answer: 100,000 tons
🔹 *Explanation:* 1000 × 100 = 100,000 tons.
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> Answer: 1,000,000 tons
🔹 *Explanation:* 1000 × 1000 = 1 million tons.
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> Answer: Quiet; Explosive
🔹 *Explanation:*
- Quiet: Basaltic lava flows gently (e.g., Hawaii).
- Explosive: Gas-rich, viscous magma explodes violently (e.g., Mount St. Helens).
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> Answer: Gases
🔹 *Explanation:* Dissolved gases (like water vapor, CO₂, SO₂) expand as magma rises, causing pressure buildup and explosions.
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> Answer: Shield; Composite (or Stratovolcano)
🔹 *Explanation:*
- Shield: Broad, gentle slopes (basaltic).
- Composite/Stratovolcano: Tall, steep, layered (alternating lava and ash — e.g., Fuji, Vesuvius).
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> Answer (example):
> *Lava flows from the base because it’s the path of least resistance — the magma finds cracks or vents near the bottom, and gravity pulls the heavy, fluid lava downward.*
🔹 *Explanation:* Lava doesn’t usually erupt from the top unless the vent is blocked or pressure forces it upward. Often, side vents or fissures near the base allow lava to escape more easily.
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> Answer (example):
> 1. *Magma is underground; lava is on the surface.*
> 2. *Magma contains dissolved gases under pressure; when it becomes lava, those gases escape into the air.*
🔹 *Explanation:* The key difference is location — magma = subsurface, lava = surface. Also, pressure and gas content change upon eruption.
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## 🌋 BONUS: Why This Matters
Volcanoes shape our planet — they build islands, create fertile soil, and recycle Earth’s crust. But they also pose hazards. Understanding them helps us predict eruptions and protect communities.
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✔ Final Tip: Always check your teacher’s specific answer key — sometimes wording varies slightly. But this guide covers the standard Bill Nye Volcanoes worksheet accurately!
Let me know if you want a printable version or need help with diagrams or bonus questions! 🧪🌋
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## ✔ BILL NYE: VOLCANOES – ANSWER KEY & EXPLANATIONS
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1. Volcanoes are formed when hot ___ from inside the Earth rises to the surface.
> Answer: Magma
🔹 *Explanation:* Magma is molten rock beneath the Earth’s surface. When it erupts through a volcano, it’s called lava.
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2. What is the volume Mount St. Helens erupted? It erupted ___ cubic miles.
> Answer: 0.25
🔹 *Explanation:* During its 1980 eruption, Mount St. Helens ejected about 0.25 cubic miles of material — enough to fill over 1 million Olympic-sized swimming pools!
---
3. Volcanoes usually occur at ___ boundaries.
> Answer: Plate
🔹 *Explanation:* Most volcanoes form where tectonic plates meet — especially at convergent (subduction) zones or divergent (spreading) zones.
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4. Volcanoes erupt when they are ___.
> Answer: Overfilled
🔹 *Explanation:* Pressure builds up as magma accumulates in the magma chamber. When pressure exceeds the strength of the overlying rock, an eruption occurs.
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5. Either volcanoes stop erupting a lot of times or they are found in the middle of a ___.
> Answer: Plate
🔹 *Explanation:* Some volcanoes form far from plate boundaries — like Hawaii — due to “hot spots” in the mantle. These are often in the middle of tectonic plates.
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6. A ___ volcano is formed by lava flows that flow down the sides quickly. This volcano has a ___ slope.
> Answer: Shield; Gentle
🔹 *Explanation:* Shield volcanoes (like Mauna Loa) have gentle slopes because low-viscosity lava spreads out easily.
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7. A cinder cone volcano is formed by ___ lava. It has a ___ slope.
> Answer: Explosive; Steep
🔹 *Explanation:* Cinder cones form from explosive eruptions that eject ash and cinders, which pile up steeply around the vent.
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8. Where would you find most of the world’s volcanoes? Circle all that apply.
> Answer: Ring of Fire, Mid-Ocean Ridge, Hot Spots
🔹 *Explanation:*
- Ring of Fire: Pacific Ocean rim — most active volcanoes.
- Mid-Ocean Ridge: Underwater volcanic ridges where plates pull apart.
- Hot Spots: Like Hawaii — stationary mantle plumes under moving plates.
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9. Match the following types of lava with their characteristics.
| Lava Type | Viscosity | Speed | Shape of Flow |
|----------------|-----------|-----------|---------------|
| Basalt | Low | Fast | Smooth |
| Andesite | Medium | Medium | Ropy |
| Rhyolite | High | Slow | Blocky |
✔ *Correct Matching:*
- Basalt → Low viscosity, Fast, Smooth
- Andesite → Medium viscosity, Medium, Ropy
- Rhyolite → High viscosity, Slow, Blocky
🔹 *Explanation:* Viscosity = thickness. Basalt is runny (low viscosity), rhyolite is thick and sticky (high viscosity).
---
10. If a volcano released 1000 tons of sulfur dioxide, how much would it release if it erupted 10 times?
> Answer: 10,000 tons
🔹 *Explanation:* Simple multiplication: 1000 tons × 10 = 10,000 tons.
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11. If a volcano erupted 1000 tons of sulfur dioxide, how much would it release if it erupted 100 times?
> Answer: 100,000 tons
🔹 *Explanation:* 1000 × 100 = 100,000 tons.
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12. If a volcano erupted 1000 tons of sulfur dioxide, how much would it release if it erupted 1000 times?
> Answer: 1,000,000 tons
🔹 *Explanation:* 1000 × 1000 = 1 million tons.
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13. There are two main types of volcanic eruptions: ___ and ___.
> Answer: Quiet; Explosive
🔹 *Explanation:*
- Quiet: Basaltic lava flows gently (e.g., Hawaii).
- Explosive: Gas-rich, viscous magma explodes violently (e.g., Mount St. Helens).
---
14. A volcano’s eruption is caused by ___ trapped in the magma.
> Answer: Gases
🔹 *Explanation:* Dissolved gases (like water vapor, CO₂, SO₂) expand as magma rises, causing pressure buildup and explosions.
---
15. The two main types of volcanoes are ___ and ___.
> Answer: Shield; Composite (or Stratovolcano)
🔹 *Explanation:*
- Shield: Broad, gentle slopes (basaltic).
- Composite/Stratovolcano: Tall, steep, layered (alternating lava and ash — e.g., Fuji, Vesuvius).
---
16. In your own words, explain why we only see lava flowing at the base of a volcano. (Complete sentence!)
> Answer (example):
> *Lava flows from the base because it’s the path of least resistance — the magma finds cracks or vents near the bottom, and gravity pulls the heavy, fluid lava downward.*
🔹 *Explanation:* Lava doesn’t usually erupt from the top unless the vent is blocked or pressure forces it upward. Often, side vents or fissures near the base allow lava to escape more easily.
---
17. “Think about it”: While magma and lava are both molten rock, what are two other ways they are different?
> Answer (example):
> 1. *Magma is underground; lava is on the surface.*
> 2. *Magma contains dissolved gases under pressure; when it becomes lava, those gases escape into the air.*
🔹 *Explanation:* The key difference is location — magma = subsurface, lava = surface. Also, pressure and gas content change upon eruption.
---
## 🌋 BONUS: Why This Matters
Volcanoes shape our planet — they build islands, create fertile soil, and recycle Earth’s crust. But they also pose hazards. Understanding them helps us predict eruptions and protect communities.
---
✔ Final Tip: Always check your teacher’s specific answer key — sometimes wording varies slightly. But this guide covers the standard Bill Nye Volcanoes worksheet accurately!
Let me know if you want a printable version or need help with diagrams or bonus questions! 🧪🌋
Parent Tip: Review the logic above to help your child master the concept of bill nye volcanoes worksheet.
