1. Frequency and Period EventPeriod (T = 1 / f)Frequency (f = 1 / T) Sunrise______ years365 per year Full Moon28 days______ per day Clock Chimes______ hours4 per hour Hummingbird Flapping0.02 seconds______ per second Breath______ minutes12 per minute Christmas365 days______ per day Class Period______ minutes0.02222 per minute PERIOD = Time for one complete cycle FREQUENCY = Number of cycles per unit of time

2. Frequency and Period EventPeriod (T = 1 / f)Frequency (f = 1 / T) Sunrise0.00274 years365 per year Full Moon28 days0.0357 per day Clock Chimes0.25 hours4 per hour Hummingbird Flapping0.02 seconds50 per second Breath0.0833 minutes12 per minute Christmas365 days0.00274 per day Class Period45 minutes0.02222 per minute PERIOD = Time for one complete cycle FREQUENCY = Number of cycles per unit of time

4. Frequency and Period EventPeriod (T = 1 / f)Frequency (f = 1 / T) Sunrise 1 day______ per day ______ years365 per year Period ______ months1 per month 28 days______ per day Clock Chimes 0.25 hours______ per hour ______ minutes0.0667 per minute Heartbeat ______ seconds1 per second 0.0166 minutes______ per minute Hummingbird Flapping ______ sec50 per sec 0.000333 minutes______ per minute PERIOD = Time between or duration of occurrences FREQUENCY = Number of occurrences per unit of time

5. Frequency and Period EventPeriod (T = 1 / f)Frequency (f = 1 / T) Sunrise 1 day1 per day 0.0027 years365 per year Period 1 months1 per month 28 days0.036 per day Clock Chimes 0.25 hours4 per hour 15 minutes0.0667 per minute Heartbeat 1 seconds1 per second 0.0166 minutes60 per minute Hummingbird Flapping 0.02 sec50 per sec 0.000333 minutes3003 per minute PERIOD = Time between or duration of occurrences FREQUENCY = Number of occurrences per unit of time