Study Guide C2 L2&3 Solar System, Stars, Galaxies & the Universe

Stars appear to twinkle as particles in the atmosphere move, causing the star's light to change _________.

• direction

• energy levels

• elevation

Tags

NGSS.MS-PS4-2

The Milky Way is part of a cluster of galaxies called the ________>

• Regional Group

• Solar Group

• Local Group

The coolest stars are _______ in color, the hottest stars are ______ in color.

• red, blue

• blue, red

• pink, purple

The three types of galaxies are elliptical, irregular, and _______.

• spherical

• globular

• spiral

Stars are composed of _______ gas.

• hydrogen

• silicon

• nitrogen

Tags

NGSS.MS-PS1-1

The star nearest the sun is _________.

• Andromeda

• Aldebaran

• Proxima Centauri

Which planet takes the longest to orbit the Sun?

• Earth

• Neptune

• Mercury

Tags

NGSS.MS-ESS1-1

Which planet is the hottest planet in the solar system?

• Venus

• Earth

• Neptune

The inner planets are ____, _____, ____, and ____.

• Neptune, Jupiter, Saturn and Uranus

• Mercury, Venus, Earth, and Mars

• Venus, Earth, Mars, and Pluto

Tags

NGSS.MS-ESS1-3

The _____ theory states that the universe began from one point and has been expanding and cooling ever since.

• Scientific

• Law of Motion

• Big Bang

Tags

NGSS.HS-ESS1-2