Question

Which of the following statements is true? a. Earth's atmosphere protects the planet from meteors. b. Apparent magnitude is a measure of a star's actual brightness. c. Comet tails always point toward the sun. d. Most asteroids are made of frozen gas

Answer 1

The true statement is that the Earth's atmosphere protects the planet from meteors, causing many to burn up before reaching the surface.

Step-by-step explanation:

The statement that is true is: a. Earth's atmosphere protects the planet from meteors. The Earth's atmosphere acts as a shield against many smaller meteors in Astrophysics , causing them to burn up before they reach the Earth's surface. The apparent magnitude of a star is not a measure of its actual brightness but rather its brightness as observed from Earth. Comet tails, however, do not always point towards the sun; they are affected by solar winds and thus often point away from the sun. Most asteroids are made up of rock and metal, not frozen gas.

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