Unit 5: #1 Big Bang and Hubble's law

Which statement identifies what most astronomers believe about the beginning of the universe?

• The universe has always been. There was no beginning.

• The universe began at a specific time and has been evolving ever since.

• The universe began as a cold, empty region in space.

• The universe began from an explosion of a star.

The Big Bang theory provides an explanation for how the universe began. Which statement best describes how the Universe began? Select all statements that apply.

• The Universe is 14 Billion years old.

• The Universe formed in an explosion of energy and matter.

• All of the energy and matter were contained in a tiny location called the primordial atom.

• The Universe never began, it has always existed.

Which scientist observed galaxies in a telescope and measured the light coming for the galaxies? There is a telescope and a law named for this individual.

• Albert Einstein

• Isaac Newton

• Edward Hubble

• Marie Curie

Our universe is made of galaxies of stars. Edwin Hubble observed that most galaxies are moving away from us. Which galaxies are observed to be moving away the fastest? This relationship is called Hubble's Law

• The close galaxies move away the fastest.

• The far galaxies move away the fastest.

• All galaxies move at the same rate.

• None of the galaxies are moving.

What force holds stars, dust and gas in space together?

• Friction

• Electrostatic Charges

• Gravity

• Solar Wind