P1f Wireless Signals
- Specification
- Lesson Plans
- Questions
- Resources
- Extras
Describe how radiation used for communication can be reflected.
Recognise that wireless technology uses electromagnetic radiation for communication.
State that wireless technology can have advantages:
- available 24 hours a day;
- no wiring needed;
- portable and convenient.
Recognise that some radio signals are better quality than others.
Show that the quality of digital radio reception is superior to analogue reception.
Describe how radiation used for communication can be refracted.
Recognise common uses of wireless technology.
- Radio;
- mobile phones;
- laptop computers.
Recognise that radio stations with similar transmission frequencies often interfere.
Explain how long-distance communication depends on the reflection of waves from the Ionosphere or by being received and re-transmitted from satellites.
Explain how the refraction and diffraction of radiation can affect communications:
- refraction at the interfaces of different layers of Earth’s atmosphere;
- diffraction by transmission dishes results in signal loss.