The Universe Test 2024

One way to compare the objects in space is by their relative sizes. Which of the following correctly lists the objects in space in order from largest to smallest?

• universe, galaxy, star, planet
• universe, galaxy, planet, star
• galaxy, universe, star, planet
• galaxy universe, planet, star

What is the term for the total of all space, matter, and energy that exist?

• the stars
• the galaxy
• the universe
• the solar system

Which of the following terms are used to describe several planets orbiting a star?

• a galaxy
• the universe
• a solar system
• a constellation

The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Why do the sun and moon appear to be the same size when viewed from Earth?

• The moon is much hotter than the sun.
• The moon is much denser than the sun.
• The moon is much brighter than the sun.
• The moon is much closer to Earth than the sun.

Earth's sun and the objects that orbit it are part of a larger group if gas, dust, stars, and other space objects called the Milky Way. What is the Milky Way?

• a constellation
• a spiral galaxy
• a solar system
• a irregular galaxy

Galaxies that appear as splotchy, shaped blobs.

• spiral
• irregular
• elliptical
• nebula

Galaxies that appear as circular or egg shaped.

• irregular
• spiral
• eliptical
• nebula

Type of planets that have thick, gaseous atmospheres with small rocky cores and ring systems of ice, rock, and dust are

• terrestrial
• nebulae
• Mercury
• gas giants

Where do stars form?

• in a planet's core
• in a nebula
• on astroids
• in sun spots in the surface of the sun

What are 3 main things needed to create stars?

• light, dust, gas
• ice, gas, gravity
• gravity, gas, dust