1. What is the primary use of SONAR technology?
a) To detect underwater objects
b) To communicate with submarines
c) To measure ocean temperatures
d) To track marine life
2. How does SONAR technology work?
a) By sending out sound waves and measuring their reflection
b) By using radar waves
c) By using infrared radiation
d) By using ultraviolet radiation
3. What is the typical frequency range of SONAR sound waves?
a) 10 to 15 kHz
b) 100 to 150 kHz
c) 1 to 5 MHz
d) 20 to 50 kHz
4. What is the typical range of a SONAR system?
a) 10 meters
b) 100 meters
c) 1 kilometer
d) 10 kilometers
5. What is the primary advantage of SONAR over other underwater detection methods?
a) It can detect objects in complete darkness
b) It can detect objects at greater depths
c) It can detect objects at faster speeds
d) It can detect objects at greater ranges
6. What type of SONAR system is typically used for navigation?
a) Active SONAR
b) Passive SONAR
c) High-frequency SONAR
d) Low-frequency SONAR
7. What type of SONAR system is typically used for military surveillance?
a) Active SONAR
b) Passive SONAR
c) High-frequency SONAR
d) Low-frequency SONAR
8. What is the primary drawback of SONAR technology?
a) It can only detect objects in its line of sight
b) It can only detect objects at short ranges
c) It can be affected by water temperature and salinity
d) It can be affected by underwater noise
9. What is the difference between active and passive SONAR?
a) Active SONAR sends out sound waves, while passive SONAR listens for sound waves
b) Active SONAR uses radar waves, while passive SONAR uses infrared radiation
c) Active SONAR uses ultraviolet radiation, while passive SONAR uses sound waves
d) Active SONAR uses infrared radiation, while passive SONAR uses radar waves
10. What is the primary application of SONAR in marine biology?
a) To track the movements of marine mammals
b) To measure ocean temperatures
c) To detect underwater objects
d) To communicate with submarines
Answers:
- a
- a
- d
- d
- a
- a
- b
- d
- a
- a