Sonar

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

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

Tags

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

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

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

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.

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

The diagram shows a research vessel using sonar to map the ocean floor.

Upon which basic behavior of sound waves does this technology depend?

• absorption

• compression

• reflection

• refraction

Tags

NGSS.MS-PS4-2

Some animals use this to navigate and hunt

• frequency

• ecolocation

• vibration