Grey-headed albatrosses have a roughly 7-feet wide wingspan. They are known to migrate across several oceans. Class 7

Grey-headed albatrosses have a roughly 7-feet wide wingspan. They are known to migrate across several oceans. Class 7

Question 1.

Grey-headed albatrosses have a roughly 7-feet wide wingspan. They are known to migrate across several oceans. Albatrosses can cover about 900 - 1000 km in a day. One of the longest single trips recorded is about 12,000 km. How many days would such a trip take to cross the Pacific Ocean approximately?

Solution:

Width of Pacific Ocean is about 19300 km. So, with 1000 km per day, it will take about [latex]\frac{19300}{1000}[/latex] = nearly 19 days to cross Pacific Ocean.

Question 2.

A bar-tailed godwit holds the record for the longest recorded nonstop flight. It travelled 13,560 km from Alaska to Australia without stopping. Its journey started on 13 October 2022 and continued for about 11.days. Find out the approximate distance it covered every day. Find out the approximate distance it covered every hour. Class 7

Solution:

Distance covered in 1 day

= [latex]\frac{13560}{11}[/latex] =km

So, distance covered per hour

= [latex]\frac{13560}{11 \times 24}[/latex] km

= 51 km approximately

Question 3.

Bald eagles are known to fly as high as 4500 - 6000 m above the ground level. Mount Everest is about 8850 m high. Aeroplanes can fly as high as 10,000 - 12,800 m. How many times bigger are these heights compared to Somu’s building? Class 7

Solution:

Somu’s building is nearly of 45 m.

So, height of Bald eagles

= [latex]\frac{60000}{45}[/latex] = [latex]\frac{4000}{3}[/latex]

= nearly 1300 times.

Height of Mount Everest

= [latex]\frac{8850}{45}[/latex] = [latex]\frac{590}{3}[/latex]

= nearly 200 times

Height of aeroplane

= [latex]\frac{12800}{45}[/latex] = [latex]\frac{2560}{9}[/latex]

= nearly 284 times