Question

The cloud of interstellar dust and gas that forms a star is known as a

A. protostar.
B. white dwarf.
C. red giant.
D. nebula.
User:
15. With an average surface temperature of about 737 K, _______ is the hottest planet.
A. Mars
B. Mercury
C. Earth
D. Venus

Answer 1

     The cloud of interstellar dust and gas that forms a star is known as a nebula. With an average surface temperature of about 737K, venus is the hottest planet. Hope this helps, and sorry your question didn't get answered in time.

Answer 2

Correct answer choice for question 1 is:

D) Nebula.

Step-by-step explanation:

A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized vapors. Basically, the nebula was a sign for any distributed enormous object, including galaxies behind the Milky Way. Most nebulae are of a large size, some are numbers of light years in diameter. A nebula that is almost visible to the human eye from Earth would appear larger, but no flashing, from close by. The Orion Nebula, the glowing nebula in the sky that controls a region twice the diameter of the full Moon, can be observed with the naked eye but was dropped by early scientists.

Correct answer choice for question 2 is :

D) Venus

Step-by-step explanation:

Venus is the second planet from the Sun, revolving it every 224.7 Earth days. It has the largest revolution time of any planet in the Solar System and turns in the different direction to most other planets. It does not have any real satellites. It is the second glowing natural object in the night sky after the Moon, leading an obvious magnitude of 4.6 bright quite to throw shadows at night and, unusually, obvious to the naked eye in full daylight.