Test: Time and Timetables - Year 4 MCQ

A leap year is defined as a year that contains 366 days instead of the usual 365. This extra day is added to February, making it 29 days long instead of 28. Leap years are necessary for keeping our calendar in alignment with the Earth's revolutions around the sun, ensuring that seasons occur at the correct times.

To convert 6:50 p.m. into 24-hour format, you add 12 to the hour component (6 + 12 = 18), resulting in 18:50. This conversion helps in contexts where a 24-hour time notation is preferred, such as in timetables and certain professional settings.

The Ancient Egyptians used shadow clocks to measure time, relying on the position of shadows cast by the sun. This method allowed them to track time during the day, contributing to early timekeeping practices that influenced modern systems.

The time “ten to seven in the evening” means ten minutes to 7:00 p.m., or 6:50 p.m. In 24-hour format, 6:50 p.m. is converted by adding 12 to the hour (6 + 12 = 18), resulting in 18:50. This conversion is essential for understanding schedules in international or professional contexts.

A digital clock displays time directly using numerical digits, while an analogue clock uses hour and minute hands on a circular dial to indicate time. This fundamental difference in display method helps users understand time at a glance, with digital clocks often providing more precise readings, especially in the 24-hour format.

One minute contains 60 seconds, as a second is defined as 1/60 of a minute. This fundamental unit of time is crucial for precise timekeeping, such as calculating short time intervals or understanding clock mechanics.

Students learn to calculate time intervals by adding the time taken between each stop and subtracting the start time from the end time. This practical skill is vital for navigating schedules and understanding travel durations effectively, ensuring efficient time management.

The total travel time from Anbury to Corbury via Babury is calculated by adding the durations of each segment: Anbury (09:09) to Babury (09:24) takes 15 minutes, and Babury (09:24) to Corbury (09:45) takes 21 minutes. Thus, 15 + 21 = 36 minutes. Alternatively, subtracting the departure time (09:09) from the arrival time (09:45) confirms a 36-minute duration.

The correct conversion of 8:35 p.m. to 24-hour time is 20:35. To convert from p.m. to the 24-hour format, you add 12 to the hour component (8 + 12 = 20), making it easier to read schedules that utilize the 24-hour system.

The duration of a journey is calculated by subtracting the departure time from the arrival time. For example, if a bus departs at 09:00 and arrives at 09:30, the journey duration is 30 minutes. This calculation is essential for planning and ensuring punctuality for events, such as catching a train or bus.