Earth Alive Class 5 Chapter 2 Earth Hemisphere
if you are looking for Class 5 Earth Alive Chapter 2 Earth Hemisphere solutions then you are at the right place. Here we are providing solutions as well as additional QA / Important Notes.
Write whether the statements are true or false.
- The Tropic of Capricorn passes through 23°N.
- The longitudes are farthest apart at the poles.
- The Earth takes four minutes to rotate one degree.
- Parallels help us in calculating time of a place.
Solution
False. The Tropic of Capricorn passes through 23.5°S, not 23°N.
False. The longitudes are farthest apart at the equator, not at the poles.
True.
False. Longitudes, not parallels, help us in calculating the time of a place.
Answer the questions in brief.
Q: Write about the numbering system of the parallels and meridians.
The numbering system of parallels starts with 0° at the equator and increases towards the poles. Parallels are numbered from 0° to 90°, with N for North and S for South appended to the numbers. Meridians are numbered starting from 0° at the prime meridian, with E for East and W for West appended to the numbers.
Q: Write about the distinct features of the parallels.
Parallels are circles drawn on the Earth’s surface running east to west. They decrease in size as one moves away from the equator towards the poles. Parallels are equidistant from each other, except at the poles where they converge to points. They never intersect or touch each other.
Q: Write about the distinct features of the meridians.
Meridians run from north to south and are farthest apart at the equator, gradually converging towards the poles. There are 360 meridians in total. They intersect at the poles and are used to determine a location’s east-west position on Earth.
Q: How do we calculate time with the help of meridians?
Time is calculated with the help of meridians by dividing the Earth’s circumference (360°) by 24 hours, resulting in each hour corresponding to 15 degrees of longitude. Each degree of longitude corresponds to a time difference of approximately four minutes. So, by knowing the longitude of a place, one can calculate its local time.
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.
