Question

question 4 of 25
a star produces energy by:
a. rotating quickly on its axis.
b. reflecting energy from nearby stars.
c. absorbing and releasing the matter of other stars.
d. creating helium from hydrogen in its core.

Explanation:

Stars generate energy through nuclear fusion. In their cores, hydrogen atoms fuse to form helium. This process releases a large amount of energy. Rotating (A) doesn't produce energy for stars. Stars don't reflect energy from nearby stars (B) to produce their own energy. Absorbing and releasing matter of other stars (C) is not the energy - production mechanism.

Answer:

D. creating helium from hydrogen in its core.