1. What is day ?
2. Use all the following terms in a sentence : meridian, solar day, period, rotation.
3. Lisy three standard times in Australia.
4. How can the sun be used to measure the time taken for one year to pass ?
5. What is the meridain and hwo does it relate to a.m. and p.m. ?
1. A day is defined as the time it takes for the Earth to complete one rotation on its axis, approximately 24 hours.
2. The meridian is an imaginary line that runs from the North Pole to the South Pole, and a solar day is the period of time between two successive passages of the Sun across the meridian. The rotation of the Earth causes the meridian to shift constantly.
3. The three standard times in Australia are Australian Eastern Standard Time (AEST), Australian Central Standard Time (ACST), and Australian Western Standard Time (AWST).
4. The sun can be used to measure the time taken for one year to pass by observing its position in the sky throughout the year. During the solstices, when the sun is at its highest or lowest point in the sky, the time can be marked to determine the duration of one year.
5. The meridian refers to the imaginary line of longitude that runs from the North Pole to the South Pole and passes through a specific location. The meridian does not directly relate to a.m. or p.m., as those are conventions used to denote time on a 12-hour clock system rather than specific positions on the Earth.