Fall 23 Review 1st Nine Weeks

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

Which elements are most

abundant in the visible

universe?

• Helium and Carbon

• Carbon and Oxygen

• Hydrogen and Oxygen

• Hydrogen and Helium

Galaxies that are redshifted are:

• actually blue.
• really far away.
• invisible.
• moving away from us.

The universe is expanding!  This means that:

• all of the galaxies are spreading out.

• the universe must have started from a single point.

• the universe is cooling down.

• all of the choices

The Cosmic Background Radiation is:

• the remaining energy from the big bang.

• incredibly hot.

• visible to the human eye.

• only located in certain places in the universe.

The universe is ____________ years old.

• 8.13 billion
• 13.7 billion

• 1.83 billion
• 381 million

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

350,000 years after the big bang, gravity pulled all the hydrogen atoms into big balls of gas that ignited under pressure, creating the first __________.

• Stars

• Planets

• Amoebas

• Light

How does the abundance of hydrogen and helium support the Big Bang Theory.

• Hydrogen and helium are elements on the Periodic Table

• Hydrogen and helium are in the same ratio throughout the universe.

• Hydrogen and helium have many current uses today

In relation to us, most galaxies are…

• Moving toward us

• Moving away from us

• Not moving