Formation of Solar System

Astronomers think that the solar system formed from an interstellar

• rocks

• clouds

• explosions

• debris

The density of gas in a collapsing interstellar cloud is low at first, but ____________________draws matter together until it is concentrated enough to form a star and possibly planets.

• space

• mass

• gravity

• dust

Tags

NGSS.HS-PS2-4

Where is the concentration of matter the densest as an interstellar cloud collapses?

• A

• B

• C

The Sun formed when the dense concentration of gas and dust at the center of a rotating disk reached a temperature and pressure high enough to fuse hydrogen into

• carbon

• lava

• helium

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

The solar system formed out of a ​ (a)   of gas and dust. That nebula, started forming about ​ (b)   billion years ago. As the nebula contracted, it's speed ​ (c)   . ​ (d)   started to occur, and that is the beginning of our star: the Sun.

• nebula

• 4.6

• increased

• Nuclear Fusion

• disk

• 150

Tags

HS-ESS1-B

When did the sun form?

• 4.6 billion years ago

• 2.6 billion years ago

• 46 years ago

• 5 million years ago

Tags

NGSS.HS-ESS1-1

Based on theistic evolution, when did the sun form?

• 4.6 billion years ago

• 13.7 billion years ago

• 6-10 thousand years ago

• 5 million years ago

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

The rotating disk surrounding the young Sun became our

• moon

• planet

• comet

• solar system

Tags

NGSS.MS-ESS1-2

Space objects built of solid particles that can form planets through collisions and mergers are called

• comets

• asteroids

• planetesimals

Theories of the origin of the solar system rely on direct ___________________ and data from probes.

• satellites

• observations

• stories

Tags

NGSS.HS-ESS1-6