Time
Time has many different units. These include-
Time lines are chronolological arrangements of events in order of first to last.
Minutes
Hours
Seconds
Days
Months
Years
Weeks
Decades
Millenia
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It does not wait for anyone
Once it is gone, it cannot be brought back.
Time only moves forward.
There are many different ways to check time.
Clocks & Watches
Calendars
Example of a timeline-
Gadgets
.Because light takes time to reach us, everything we see is in the past. The sun you can see out of the window is 8 minutes and 20 seconds old. The light from our nearest star, Proxima Centauri, is 4 years old.
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Sun and moon's positioning
Am- Before noon
Pm- After noon
Ante meridiem(am) and Post meridiem(pm)
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“Time to get up”, “Time to go to school”. Modern life is ruled by the calendar and the clock. You probably know what the time, day and month is at any moment. The first people didn’t keep track of time though. They hunted and worked during the day and slept at night. They didn’t have a calendar to track days, months and years, or a clock to track minutes and hours.
Atomic clocks
The most accurate clock ever built is the strontium clock.
The oldest known object on Earth is a 4.4-billion-year-old crystal, a zircon.
Time passes slower the faster you move.
On Mercury, a day is two years long.
When the dinosaurs were alive, there were 370 days in a year. The Earth's spin is getting slower because the moon's gravity is acting as a drag, so days are getting longer, by about 1.7 milliseconds per century.
Next week, your watch will be one second slow.