Question

Below is a diagram of the Sun. Bettina wants to place a circular arrow in one layer of the diagram to illustrate how energy is transferred in that layer.

In which layer should Bettina draw the arrow?

W
X
Y
Z

Answer 1

The correct answer is Option A, W

Step-by-step explanation:

The figure represents the three parts of the sun.

Z – it is the inner most part and thus it represents the core

Y – It lies between the core and the outermost layer and is known as radiative zone. All radioactive processes take place in this zone

W – This is the outermost layer and is known as the convection zone where continuous transfer of heat takes place from the radiative zone which is further radiated to other planets in the solar system. Thus it can be said that energy is transferred in the convection zone.

Answer 2

The answer is; W

This layer of the earth is the mantle. It is fluid because the rocks in the region have plasticity. The rocks in the region are heated from below by the core. The hotter bottom layers of the mantle begin to rise while the cooler upper layers sink to the bottom. These convection currents are responsible for the tectonic plate movement of the earth’s crust.