Sonar quiz

When was sonar invented

• 1917

• 1932

• 1913

• 1927

What is sonar used for

• To detect fish and any other living things

• To detect the distance and direction of under water objects

• To catch fish and other Living things

• To detect distance of objects underwater

Why doesn’t sonar work in the air

• Air is less dense than water

• Air is more dense than water

• Air does not carry sound waves as fast as water

• A and C

What measures the time difference between the sound and its echo

• Hearing aid

• Sonar device

• Solar plant

• Satellite

When a sounds hits a surface it

• Reflected

• Echoed

• Lost

• Stuck

What does sonar not measure

• Distance

• Pressure

• Direction

• Speed

Sonar evaluation

• Radar

• Microbiology

• Music

• Fishing

Some radar uses

• Vaccine

• Cave exploration

• Photographs

• Astronomy

What animals use sonar

• Dolphins

• Sharks

• Bats

• Salmon

What are the key elements in sonar

• Send echo

• Retriever

• Sound source

• TelePathic