We can say that cosmic rays
A) have no charge.
B) are mostly electrons.
C) fall to the ground without interacting with anything in the Earth's atmosphere.
D) were created by humans as a source of high-energy particles.
E) are particles that fall on Earth from outer space.

Question

Quizplus · Accepted Answer

Cosmic rays are particles that originate from sources outside the earth's atmosphere and hit the earth's surface. They are mostly protons with smaller amounts of other atomic nuclei, electrons, and positrons. They are not created by humans but are constantly bombarding the earth from all directions.

We Can Say That Cosmic Rays