Question

1. Why does only 51% of the insolation
reach the Earth's surface?

2. Why are the slanting rays less effective than the vertical rays in hating the atmosphere?

Answer 1

Answer:

1. Only 51% of sun's insolation reaches the earth's surface because:

• When the sun's insolation comes towards the earth, 35% of the insolation is reflected back into space.

• 14% is absorb by the Earth's atmosphere.

2. Slanting rays are less effective in heating as compared to vertical rays because:

• Slanting rays cover a lot of earth's surface, not producing any effective insolation.

• Vertical rays heat up a small area and concentrate the insolation towards it, heating the surface.

Hope this helps you.