Signal — Science definition
Changing physical pattern used to carry information.
Where it is taught
- Waves, Information & a Speaker System — Waves, Sound & Light, Physical Science: Matter, Forces & Energy, Grade 8
In use
A signal is a changing physical pattern used to carry information.
Waves, Information & a Speaker System
Questions using signal
Problem 1
Answer and explanation
Changes between sample times and finer level differences are lost. Faster sampling improves temporal coverage but does not add more allowed amplitude levels; the encoding and reconstruction also matter.
Separate sampling times from quantized levels.
State which omitted detail each proposed change addresses.
Changes between sample times and finer level differences are lost. Faster sampling improves temporal coverage but does not add more allowed amplitude levels; the encoding and reconstruction also matter.
Response criteria
- Use the named labels, directions or supplied quantities accurately.
- Connect the visual evidence to the scientific mechanism or calculation.
- State the relevant model conditions or limitation.
Problem 2
Answer and explanation
Changes between sample times and finer level differences are lost. Faster sampling improves temporal coverage but does not add more allowed amplitude levels; the encoding and reconstruction also matter.
Separate sampling times from quantized levels.
State which omitted detail each proposed change addresses.
Changes between sample times and finer level differences are lost. Faster sampling improves temporal coverage but does not add more allowed amplitude levels; the encoding and reconstruction also matter.
Response criteria
- Use the named labels, directions or supplied quantities accurately.
- Connect the visual evidence to the scientific mechanism or calculation.
- State the relevant model conditions or limitation.