The Big Bang Theory

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

Galaxies that are REDSHIFTED are:

• actually BLUE

• really NEAR earth

• invisible or not visible

• moving AWAY from us.

Tags

NGSS.HS-ESS1-2

If something that makes light is moving AWAY from you, it spreads the wavelengths of light out. This application of the Doppler effect is known as ___.

• blue shift

• green shift

• red shift

• black shift

Tags

NGSS.HS-ESS1-2

A galaxy showing BLUE SHIFT is ___.

• very cold

• moving TOWARDS us

• dying

• about to supernova

Tags

NGSS.HS-ESS1-2

Which elements are most abundant in the visible universe?

• Hydrogen and Carbon

• Carbon and Helium

• Hydrogen and Oxygen

• Hydrogen and Helium

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 these are true.

• the universe is getting less dense

What happens to the wavelengths of energy if they are moving AWAY from a source?

• The waves stretch out and get longer.

• The waves compress and get shorter.

Tags

NGSS.HS-PS4-1

What best describes the doppler effect?

• An apparent change in frequency of a wave due to the relative motion between a wave source and an observer

• When sound changes pitch

• When light changes color

• An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer.

Tags

NGSS.HS-PS4-1

The universe is expanding.  This means that:

• Galaxies are getting bigger.
• Atoms are getting bigger.
• The universe is creating more matter.
• The amount of space between galaxies is increasing.

Tags

NGSS.HS-ESS1-2

What are the proportions of the universe's hydrogen and helium?

• 50% Hydrogen 50% Helium

• 25% Hydrogen 75% Helium

• 75% Hydrogen 25% Helium

• 40% Hydrogen 60% Helium

Tags

NGSS.HS-ESS1-2