Question

which statement describes how the van allen belts are formed?
when low - energy particles from the sun bounce off earths magnetic field
when high - energy particles from the sun bounce off earths magnetic field
when low - energy particles from the sun are trapped by earths magnetic field
when high - energy particles from the sun are trapped by earths magnetic field

Explanation:

The Van Allen belts are two regions of trapped high-energy charged particles (mostly electrons and protons) from the Sun, held in place by Earth's magnetic field. Low-energy particles are not trapped in this way, and the particles are not simply bouncing off the field but are confined within it.

Answer:

when high-energy particles from the Sun are trapped by Earth's magnetic field