Astronomy Test Review 2019T

How big is the universe?

• 93 billion light years

• 9 billing light years

• 3 billion light years

• 930 billion light years

List the correct sequence of the Universe from smallest to largest?

• Our solar system, Universe, Milky Way Galaxy

• Our solar system, Milky Way Galaxy, Universe

• Milky Way Galaxy, Our solar system, Universe, Moon

• Moon, Sun, Saturn, Universe, Our solar system

How many galaxies, besides our own Milky Way Galaxy are there in the universe?

• 1 billion

• 10 billion

• 100 billion

• 1 million

What theory explains how the solar system formed from a cloud of gas and dust approximately 4.6 billion years ago using the evidence from meteorites, moon, and Earth rocks?

• Nebular Theory

• Interstellar Theory

• Kepler's Law

• Gravitational Pull Theory

How are Terrestrial Planets different from Jovian planets?

• Terrestrial planets are small, rocky, dense, and have a thin atmosphere.

• Terrestrial planets are large gas giants made up of gas and ice.

• Terrestrial planets are farthest from the sun

• Terrestrial planets are larger than Jovian planets

Name the Jovian planets

• Jupiter, Saturn, Neptune, Uranus, and Pluto

• Sun, Moon, Earth, Stars

• Saturn, Earth, Pluto, Venus

• Mercury, Venus, Earth, and Mars

If the Jovian planets are larger and more massive than Terrestrial planets why are they less dense?

• because they are composed of gases

• because they are composed of rocky substrates

• because they were formed near the Sun

• because they are composed mostly of metals

What evidence proves the early Earth experienced giant impacts which caused planet-wide melting?

• A melting hot molten planet allowed heavy iron metals to sink to the core

• A melting hot molten planet allowed heavy iron metals to rise to the surface

• The moon's gravitational pull allows the ocean tides to ebb and flow

• Early asteroids covered the earth by a thin layer of tiny particle silicates and gases.

Name the process in which dust ad gas collide into larger bodies and are attracted by gravity to form stars, planets, and moons.

• Accretion

• Albedo

• Radiation

• Protostar

What is parallax?

• It is used to measure the distances to stars. The parallax angles of distant stars are too small to measure.

• It is used to measure the distance the weight of stars.

• Also known as the southern lights, this is an atmospheric phenomenon that displays a diffuse glow in the sky in the southern hemisphere.

• A unit of measure equal to the average distance between the Earth and the Sun, approximately 93 million miles.