Please review and study chapters 18-21. Your final exam is on Friday February 6.
List of short answer questions:
- Give two examples of how ultrasonic waves are used in health care.
- Identify one source of DC power and one source of AC power.
- Identify one way to increase the strength of an electromagnet.
- What is the difference between the methods of producing AM and FM signals?
Math questions:
- A sound wave bounces off a submarine after traveling for 6.2 s in 25 °C salt water. The speed of sound = 1531 m/s. How far away is the submarine?
- Find the current in a circuit with a resistance of 3.6 Ω that is powered by an 8.9 V battery.
- What is the wavelength of a 4.56 MHz radio wave?
List of essay questions:
- Describe how God has designed various animals to use echolocation. How have humans imitated this design in their own technology?
- Name and describe three devices that prevent circuits from overheating or drawing too much current. How do these devices fulfill the Creation Mandate?
- Name three applications of electromagnets.
- How are antennas used in the transmission of radio signals?
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