Exit Ticket: Hess' Model

What technological advancement during World War II allowed for more detailed mapping of the ocean floor?

• Radar

• Sonar

• Satellite imaging

• Submarine exploration

Who was the geologist that used sonar data to develop the hypothesis of sea floor spreading?

• Charles Darwin

• Alfred Wegener

• Harry Hammond Hess

• Marie Tharp

What is the primary method used to determine the distance to the ocean floor using sonar?

• Measuring the frequency of the sound wave

• Timing the echo of the sound wave

• Calculating the amplitude of the sound wave

• Analyzing the wavelength of the sound wave

How does sonar technology help in mapping the ocean floor?

• By capturing images of the ocean floor

• By measuring the temperature of the ocean water

• By sending sound waves that bounce off the ocean floor

• By detecting magnetic fields

If a sonar ping takes 3 seconds to return, what is the depth of the ocean floor?

• 2250 meters

• 3000 meters

• 4500 meters

• 1500 meters

What is the formula used to calculate the distance to the ocean floor using sonar data?

• Distance = Time × Speed of sound

• Distance = Time + Speed of sound

What hypothesis did Harry Hammond Hess develop using sonar data?

• Plate tectonics

• Continental drift

• Sea floor spreading

• Ocean current circulation

What is the purpose of using sonar in ocean exploration?

• To measure the salinity of ocean water

• To map the ocean floor

• To track marine life

• To monitor ocean currents

Where is the Challenger Deep located?

• On top of Earth's highest mountain

• In the Atlantic Ocean

• In the Mariana Trench

• Near Micronesia