earthquakes and volcanoes quiz grade 6

📚 Quick Study Guide

• 🌍 Earthquakes: Earthquakes are vibrations caused by the movement of tectonic plates.
• 🌊 Seismic Waves: These waves travel through the Earth and are measured by seismographs. There are P-waves (primary) and S-waves (secondary).
• 📍 Epicenter: The point on the Earth's surface directly above the earthquake's focus (where it originates).
• 🌋 Volcanoes: Volcanoes are formed when molten rock (magma) erupts onto the Earth's surface.
• 🔥 Magma vs. Lava: Magma is molten rock beneath the surface, while lava is molten rock that has erupted onto the surface.
• 🌡️ Types of Volcanoes: Shield volcanoes (broad, gently sloping), composite volcanoes (steep-sided), and cinder cone volcanoes (small, cone-shaped).
• 📏 Richter Scale: A scale used to measure the magnitude (size) of an earthquake. Each whole number increase represents a tenfold increase in amplitude.

Practice Quiz

1. Which of the following causes earthquakes?
   1. A) Changes in the weather
   2. B) Movement of tectonic plates
   3. C) Eruption of volcanoes
   4. D) Impact of asteroids
2. What is the name of the point on the Earth's surface directly above the earthquake's origin?
   1. A) Focus
   2. B) Fault line
   3. C) Epicenter
   4. D) Magma chamber
3. Which type of seismic wave is the fastest and travels through solids, liquids, and gases?
   1. A) S-wave
   2. B) Surface wave
   3. C) P-wave
   4. D) Love wave
4. What is molten rock called when it is beneath the Earth's surface?
   1. A) Lava
   2. B) Magma
   3. C) Ash
   4. D) Pumice
5. Which of the following is NOT a type of volcano?
   1. A) Shield volcano
   2. B) Composite volcano
   3. C) Cinder cone volcano
   4. D) Granite volcano
6. What tool is used to measure the magnitude of an earthquake?
   1. A) Barometer
   2. B) Thermometer
   3. C) Seismograph
   4. D) Richter scale
7. Which of the following is a characteristic of a shield volcano?
   1. A) Steep sides
   2. B) Explosive eruptions
   3. C) Broad, gently sloping sides
   4. D) Made of cinder cones