Universe

The explosion that sent the universe flying out is called _____.

• The Big Bang

• The Milky Way

• The Solar System

• The Sun

Tags

NGSS.HS-ESS1-2

Since the Big Bang, and even today, the universe is still _____.

• Expanding

• Shrinking

• Cooking

• Spinning

Tags

NGSS.HS-ESS1-2

Most scientists believe the Big Bang Theory explains which of the following questions?

• How our planets and moons formed

• How our universe began

• How the sun turns hydrogen into helium

• How fast light travels through space

Tags

NGSS.HS-ESS1-2

Which statement is true?

• The galaxies are moving toward us.

• The galaxies are moving away from us.

• The universe remains static or unchanged in motion.

• None of the above

Tags

NGSS.HS-ESS1-2

All matter and space is called:

• Galaxy

• Solar system

• Universe

• Elements and compounds

Tags

NGSS.HS-ESS1-2

How many galaxies are estimated to be in the universe?

• 1

• 1,000

• 1 million

• Over 1 billion

Which area of Physical Science studies the nature of the universe?

• Chemistry

• Physics

• Biology

• Astronomy

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

NGSS.HS-ESS1-4

What is the name of the most widely accepted scientific theory of how the Universe formed?

• Steady State

• Big Bang

• Heliocentric

• Geocentric

Tags

NGSS.HS-ESS1-2

Which galaxy is the largest in the local group?

• Milky Way

• Andromeda

• Triangulum

• Le Gentil

Tags

NGSS.MS-ESS1-2

Hey there, space explorers Aiden, Mia, and Luna! Ready for a cosmic challenge? Can you guess how many galaxies twinkle in the vast expanse of the observable universe?

• 2 million

• 200 million

• 2 billion

• 2 trillion

Answer explanation

The correct answer is 2 trillion because there are approximately 100 billion galaxies in the observable universe, and each galaxy contains hundreds of billions of stars.