Earthquake Measurement and Effects

The video explains earthquakes, their causes, and frequency. It covers Earth's structure, tectonic plates, and types of plate movements like subduction, lateral sliding, and spreading. The Ring of Fire is highlighted as a major earthquake zone. The video also discusses how earthquakes are measured using seismographs and their magnitude. An activity to create a DIY seismograph is included, encouraging hands-on learning.

How many earthquakes are officially reported each year by the United States Geological Survey?

• 10

• 20

• 100

• 50

What are the edges around tectonic plates called?

• Earthquake zones

• Seismic zones

• Plate boundaries

• Fault lines

Which type of tectonic plate movement involves one plate sliding under another?

• Lateral sliding

• Converging

• Subduction

• Spreading

What percentage of earthquakes occur in the Pacific Ocean's Ring of Fire?

• 100%

• 50%

• 70%

• 90%

What is the term for the location on the Earth's surface directly above where an earthquake starts?

• Hypocenter

• Fault line

• Seismic point

• Epicenter

Which natural disasters can be triggered by earthquakes?

• Hurricanes and tornadoes

• Avalanches and landslides

• Floods and droughts

• Wildfires and storms

What device do scientists use to measure the intensity of an earthquake?

• Thermometer

• Seismograph

• Barometer

• Anemometer

What magnitude is considered a major earthquake?

• Above 8.0

• Above 7.0

• Above 6.0

• Above 5.0

What is the purpose of the DIY seismograph activity?

• To simulate and record earthquake movements

• To measure temperature changes

• To predict future earthquakes

• To create an earthquake

What is the role of a seismologist?

• To study earthquakes

• To study ocean currents

• To study volcanoes

• To study weather patterns