Earthquake and Tectonic Plate Concepts

The video tutorial introduces the concept of disasters, distinguishing between human-made and natural disasters. It focuses on earthquakes, explaining their causes through tectonic plate movements and the structure of the Earth. The Richter scale is introduced as a tool to measure earthquake magnitude. The video also highlights regions prone to earthquakes and concludes with a preview of the next class.

What is a disaster?

• A planned event

• An event with unfortunate consequences

• An event with positive outcomes

• A natural phenomenon

Which of the following is a human-made disaster?

• Earthquake

• Tsunami

• Oil spill

• Hurricane

What are tectonic plates?

• Types of ocean currents

• Massive blades of rocks covering the Earth

• Parts of a volcano

• Layers of the atmosphere

What causes tectonic plates to move?

• Wind currents

• Ocean waves

• Magnetic fields

• Heat produced inside the Earth

What is the primary component of magma?

• Water

• Sand

• Melted rocks

• Ice

What happens when tectonic plates collide?

• They cause earthquakes

• They form mountains

• They stop moving

• They create new oceans

Who developed the Richter scale?

• Isaac Newton

• Albert Einstein

• Charles F. Richter

• Nikola Tesla

What does a Richter scale reading of 7 indicate?

• A minor earthquake

• No earthquake

• A moderate earthquake

• A powerful earthquake

Which of the following regions is prone to earthquakes?

• Mumbai

• Srinagar

• Chennai

• Bangalore

What is the main purpose of the Richter scale?

• To calculate ocean depth

• To measure the magnitude of earthquakes

• To assess volcanic activity

• To predict weather patterns