cosmic timeline

Why is the Big Bang important in the timeline of the universe?

• It was the day Earth formed
• It started space, time, and everything in the universe
• It only created stars in our galaxy
• It happened after life began on Earth

Answer explanation

The Big Bang marks the origin of the universe, starting time, space, and all matter.

Tags

NGSS.HS-ESS1-2

What does the Big Bang lead to in the universe?

• Only the formation of humans
• Just the planets in our solar system
• The creation of stars, galaxies, and planets over time
• The extinction of dinosaurs

Answer explanation

Everything in the universe—galaxies, stars, and planets—eventually formed because of the Big Bang.

Tags

NGSS.HS-ESS1-2

When did the Big Bang happen compared to other events?

• AFTER the Moon formed

• BEFORE any stars, galaxies, or planets existed

• When humans FIRST appeared

• At the SAME time as the first life on Earth

Answer explanation

The Big Bang was the very first event, before all other cosmic developments.

Tags

NGSS.HS-ESS1-2

What does the Big Bang show us about the beginning of the universe?

• The universe had no beginning
• It started small and got smaller
• Everything began from one event long ago
• Stars and galaxies always existed

Answer explanation

The Big Bang theory explains the universe began in a single event and expanded outward.

Tags

NGSS.HS-ESS1-2

What does the timeline show about when humans appeared?

• At the start of the universe
• Before stars
• Long after most cosmic events
• At the same time as the Big Bang

Answer explanation

Humans appeared very recently compared to the 13.8 billion-year history of the universe.

Which of these formed BILLIONS of years before humans?

• Cities
• Photosynthesis
• Stars and galaxies
• Dinosaurs

Answer explanation

Stars and galaxies formed shortly after the Big Bang, billions of years before humans existed.

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

Which event shows the universe did not stay the same?

• First astronauts on the Moon
• Dinosaurs went extinct
• Formation of the Milky Way
• Humans appearing

Answer explanation

The creation of galaxies like the Milky Way reveals major cosmic changes over time.

Tags

NGSS.MS-LS4-1

What is one major change that happened in the universe over time?

• The Big Bang ending
• The universe shrinking
• Stars and galaxies forming
• Earth disappearing

Answer explanation

The formation of stars and galaxies shows how the universe evolved after the Big Bang.

Tags

NGSS.HS-ESS1-2

Why is human history small on the cosmic timeline?

• It started billions of years ago
• It's only a tiny part of universe history
• Humans were first
• It's the longest era

Answer explanation

Human history represents only a fraction of the universe’s long timeline.

What does comparing human history to the universe's history help us understand?

• Humans were the first life
• The universe formed recently
• How small our history is in time
• Earth is older than the Sun

Answer explanation

Comparing timelines shows the vast age and scale of the universe compared to human existence.

Tags

NGSS.HS-ESS3-1