How Galaxies/Stars are formed

What does a light year measure?

• Time

• Distance

• Speed

• Mass

What is the speed of light in miles per second?

• 186,000 miles per second

• 300,000 miles per second

• 150,000 miles per second

• 200,000 miles per second

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

How many miles does light travel in one light year?

• 5,865,696,000,000 miles

• 3,000,000,000,000 miles

• 1,000,000,000,000 miles

• 7,000,000,000,000 miles

What is a light second?

• The distance light travels in one second

• The distance light travels in one minute

• The distance light travels in one hour

• The distance light travels in one day

What event marked the beginning of the universe according to the provided material?

• The formation of the first galaxies

• The Big Bang

• The Quasar Era

• The Dark Ages

Tags

NGSS.HS-ESS1-2

Which elements formed as the universe cooled after the Big Bang?

• Carbon and Oxygen

• Nitrogen and Argon

• Hydrogen and Helium

• Iron and Nickel

Tags

NGSS.HS-ESS1-2

What happens during the first 10^{-43} seconds after the Big Bang according to the diagram?

• The universe is a seething, hot soup of electrons, quarks, and other particles.

• The cosmos goes through a superfast 'inflation,' expanding from the size of an atom to that of a grapefruit.

• Electrons combine with protons and neutrons to form atoms.

• Galaxies cluster together under gravity.

Tags

NGSS.HS-ESS1-2

At what stage do electrons combine with protons and neutrons to form atoms?

• 300,000 years

• 1 billion years

Tags

NGSS.HS-ESS1-2

Which process allows quarks to clump into protons and neutrons?

• Superfast inflation

• Cooling of the cosmos

• Formation of galaxies

• Combination of electrons with protons

Tags

NGSS.HS-ESS1-2

What is the term used to describe the observation that galaxies are moving away from us at speeds proportional to their distance?

• Newton's Law

• Kepler's Law

• Hubble's Law

• Einstein's Theory