State True or False:
1. Movement requires energy which can be provided internally or externally
2. A year is measured as the time taken by the earth to complete one revolution around the sun
3. Candle clocks and sand clocks are time measuring devices used in recent times.
4. Sand dock is also called a sundial
5. The gap between two consecutive noons is called an hour
6. 365 solar days - 1 year
Answers
1)false
2) true
365 days
Well, 365 days is about how long it takes for Earth to orbit all the way around the Sun one time.
3)false
Candle clock and sand glass were used to measure time in ancient time but in modern time, time is measured by stop watch and digital clock.
4)false
Sundial, the earliest type of timekeeping device, which indicates the time of day by the position of the shadow of some object exposed to the sun's rays. As the day progresses, the sun moves across the sky, causing the shadow of the object to move and indicating the passage of time.
5)false
Mean solar day is the time interval between two successive noon when sun passes through zenith point (meridian). Sidereal day is the time interval between two successive transit of a distant star through the zenith point (meridian).
6)false
The solar year (365 days 5 hours 48 minutes 46 seconds), also called tropical year, or year of the seasons, is the time between two successive occurrences of the vernal equinox (the moment when the Sun apparently crosses the celestial equator moving north).
Answer:
true
true
true
false
false
false