Question

6 why does earth get more energy from the sun than from all the other stars in the universe combined?
a the sun is much larger than the other stars.
b the sun is much hotter than the other stars.
c the sun is much more dense than the other stars.
d the sun is much closer than the other stars.

Explanation:

Step1: Analyze Option A

The sun is not the largest star. There are many stars larger than the sun in the universe. So this option is incorrect.

Step2: Analyze Option B

The sun is not the hottest star. There are stars with much higher surface temperatures than the sun. So this option is incorrect.

Step3: Analyze Option C

The sun is not the most dense star. Some stars like white - dwarfs and neutron stars have extremely high densities compared to the sun. So this option is incorrect.

Step4: Analyze Option D

According to the inverse - square law of radiation, the intensity of radiation received from a source is inversely proportional to the square of the distance from the source ($I=\frac{P}{4\pi r^{2}}$, where $I$ is the intensity, $P$ is the power of the source, and $r$ is the distance). The sun is extremely close to the Earth compared to other stars. Even though there are many stars in the universe, because of the large distance of other stars, the total energy received from them is much less than that from the sun. So this option is correct.

Answer:

D. The sun is much closer than the other stars.