UNIVERSE
SOLAR SYSTEM FORMATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Just because the solar wind does not affect these planets
|
|
|
Because they less dense
|
|
|
Because the solar wind does not affect these planets AND their own gravity is strong enough
|
|
|
Just because their own gravity is strong enough
|
Detailed explanation-1: -The solar wind swept away lighter elements, such as hydrogen and helium, from the closer regions, leaving only heavy, rocky materials to create terrestrial worlds. But farther away, the solar winds had less impact on lighter elements, allowing them to coalesce into gas giants.
Detailed explanation-2: -The terrestrial planets, as well as the larger moons and asteroids, have spherical layers that were created by melting and differentiation. Heavier elements sank to the center, forming iron-rich cores. Lighter materials were buoyed upward to form the outer rocky layers.
Detailed explanation-3: -The effects of solar radiation have boiled off many of the lighter elements such as hydrogen and helium, from the inner protoplanets. These planets consist therefore primarily of solid material and thus have been termed terrestrial planets.
Detailed explanation-4: -The planets nearest to the star tend to be rockier because the star’s wind blows away their gases and because they are made of heavier materials attracted by the star’s gravity.