Sonar and Echolocation

What does the acronym SONAR stand for?

• Sound Navigation and Ranging

• Sound Observation and Ranging

• Sound Navigation and Reflection

• Sound Observation and Reflection

Tags

NGSS.MS-PS4-2

Which organisms have evolved echolocation to navigate and find prey?

• Bats and dolphins

• Whales and dolphins

• Bats and whales

• Bats, whales, and dolphins

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

How do bats and dolphins use echolocation to determine the distance of an object?

• By analyzing the time it takes for sound waves to bounce back

• By analyzing the intensity of sound waves

• By analyzing the frequency of sound waves

• By analyzing the direction of sound waves

Tags

NGSS.MS-PS4-2

What is the purpose of active sonar arrays?

• To generate their own sound waves

• To listen for the sound of enemy submarines

• To passively detect underwater obstacles

• To calculate the depth of the water

Tags

NGSS.MS-PS4-2

How does active sonar calculate the distance to an object?

• By measuring the time it takes for sound waves to travel and bounce back

• By analyzing the intensity of sound waves

• By analyzing the frequency of sound waves

• By analyzing the direction of sound waves

What is the average velocity of sound in average seawater?

• 5,000 ft/sec

• 2,500 ft/sec

• 10,000 ft/sec

• 1,000 ft/sec

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is the purpose of sounding data in sonar technology?

• To identify the contour of the seafloor, whales, schools of fish, and submarines

• To calculate the speed of sound in water

• To determine the temperature and salinity of the water

• To analyze the density of the water

Tags

NGSS.MS-PS4-2

How has sonar technology been used beyond military applications?

• To increase our understanding of the world's oceans

• To detect underwater obstacles for small motorboats

• To find large schools of fish for commercial fishermen

• To launch nuclear warheads from submarines

Tags

NGSS.MS-PS4-2

What evidence did Alfred Wegner use to support his continental drift theory?

• Alfred Wegner used the fit of the continents, distribution of fossils and rock formations, and ancient climate indicators as evidence for his continental drift theory.

• Alfred Wegner used the alignment of the stars, the study of volcanoes, and the analysis of ocean salinity as evidence for his continental drift theory.

• Alfred Wegner used the discovery of new continents, the study of earthquakes, and the analysis of ocean currents as evidence for his continental drift theory.

• Alfred Wegner used the movement of tectonic plates, the rotation of the Earth, and the position of the Moon as evidence for his continental drift theory.

Tags

NGSS.MS-ESS2-3

How did Harry Hess's work with SONAR contribute to our knowledge of the ocean floor?

• By providing detailed maps and images of the seafloor topography and revealing the process of seafloor spreading at the mid-ocean ridges.

• By demonstrating that the ocean floor is completely flat and featureless.

• By proving that the ocean floor is made of solid rock.

• By discovering new species of marine life on the ocean floor.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1