Doppler Effect (Grade 12 NSC Matric Physical Sciences): Flashcards
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Doppler effect definition
Doppler effect definition
Change in frequency due to relative motion of source & observer
Wave property changed by Doppler effect
Wave property changed by Doppler effect
Frequency (or pitch)
Types of waves Doppler effect applies to
Types of waves Doppler effect applies to
All types (sound & electromagnetic waves)
Pitch when emergency vehicle approaches
Pitch when emergency vehicle approaches
Higher pitch
Pitch when emergency vehicle moves away
Pitch when emergency vehicle moves away
Lower pitch
Wave behaviour when source & observer get closer
Wave behaviour when source & observer get closer
Waves are compressed
Wave behaviour when source & observer move apart
Wave behaviour when source & observer move apart
Waves are stretched out
Frequency when source & observer approach
Frequency when source & observer approach
Higher frequency
Frequency when source & observer separate
Frequency when source & observer separate
Lower frequency
Key requirement for Doppler effect
Key requirement for Doppler effect
Relative motion between source & observer