Earth Alive Class 5 Chapter 2 Earth Hemisphere

Q: What purpose do time zones serve?

Time zones serve the purpose of maintaining a uniform standard time within a specific region. They help synchronize timekeeping across different areas, making it easier for people to coordinate activities, such as travel, commerce, and communication, across different regions of the world.

 

Earth Alive Class 5 Chapter 2 Earth Hemisphere Additional Que Ans

 

Q: What is the equator and what does it divide?

A: The equator is an imaginary line halfway between the North Pole and the South Pole. It divides the Earth into two equal halves known as the Northern Hemisphere and the Southern Hemisphere.

 

Q: What are latitudes or parallels, and how do they run?

A: Latitudes or parallels are imaginary lines drawn parallel to the equator, running from east to west across the Earth’s surface.

 

Q: What are longitudes or meridians, and how do they run?

A: Longitudes or meridians are imaginary lines that run from north to south across the Earth’s surface, meeting at the poles.

 

Q: How do latitudes and longitudes help locate places on Earth?

A: Latitudes and longitudes intersect at right angles (90°), and the point of intersection helps us locate a specific place on Earth. For example, if a place is at 15° N latitude and 73° E longitude, it means it’s located exactly at the point where these lines intersect.

 

Q: How do longitudes help calculate time?

A: Longitudes help calculate time because each degree of longitude corresponds to a time difference of approximately four minutes. By knowing the longitude of a place, one can calculate its local time.

 

Q: What is a time zone, and why are they used?

A: A time zone is a region that follows a uniform standard time to facilitate various activities such as political, commercial, and legal matters. Time zones help ensure consistency in timekeeping across different regions, especially considering the Earth’s rotation and differing local times.