Time is a fundamental concept in the field of science and is used to measure the duration and sequence of events. It is a continuous progression of existence and is often measured in units such as seconds, minutes, hours, days, and years.
Units of Time
There are various units of time that are commonly used for measurement:
Second (s) - The basic unit of time, often defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.
Month - The duration of time in the Gregorian calendar, ranging from 28 to 31 days.
Year - The time it takes for the Earth to complete one orbit around the sun, approximately 365.25 days.
Measuring Time
Time can be measured using various instruments and devices, such as clocks, watches, and timers. These instruments are designed to accurately track the passage of time and are used in everyday life as well as in scientific experiments and observations.
From Molecules to Organisms: Structures and Processes
Students who demonstrate understanding can:
Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms.