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What is a scientific theory?

• A well tested explanation for why something happens

• A mathematical explanation for how something happens

• A random guess or hypothesis

• A collection of evidence that proves something to be true.

Which of the following is NOT evidence for the Big Bang Theory?

• cosmic microwave background

• the universe is shrinking

• red-shift/ the universe is expanding

• the abundance of heavy elements

Tags

NGSS.HS-ESS1-2

Why are the gas giants farther from the sun than the terrestrial planets?

• Close to the sun it is too hot for the gasses to condense

• The outer planets have a higher specific gravity

• The gas giants formed in a different solar system

• The inner planets are not large enough to hold on to gasses

What is the relationship between the size and luminosity of a star ?

• As size increases, luminosity decreases

• As size increases, luminosity increases

• There is no relationship

The Big Bang Theory suggests that our universe formed as the result of a huge explosion that sent all existing matter flying outward from a single point. The Big Bang Theory is supported by which of these observations?

• All matter in the universe is composed of the same atoms.

• All galaxies appear to be moving away from all other galaxies.

• All stars in the universe are approximately the same age.

• The universe is relatively the same temperature in all locations.

Tags

NGSS.HS-ESS1-2

What is happening to the Universe to this day?

• The universe is getting smaller and hotter.

• The universe is staying the same.

• The universe is getting cooler and bigger.

Tags

NGSS.HS-ESS1-2

The Big Bang Theory suggests that our universe originated hot long ago?

• 10 - 20 billion years ago

• 10 - 20 million years ago

• 10 - 20 thousand years ago

• 10 - 20 centuries ago

Tags

NGSS.HS-ESS1-2

Cosmic Microwave Background Radiation (CMBR) is the term used to describe the residual microwave radiation observed everywhere in the universe that seems to have no single source. The observation of CMBR is used as evidence of The Big Bang Theory because it is believed to be -

• The result of collisions between neighboring galaxies.

• Particles of dust that have absorbed radioactivity.

• Radiation left over from the rapid expansion of matter.

• Light energy emitted from the source of The Big Bang.

Tags

NGSS.HS-ESS1-2

The universe includes:

• all the matter known to exist

• all the space that exists

• nearly 200 billion galaxies

• all of the above

Which of the following lists the astronomical structures from smallest to largest?

• planetary system, galaxy, universe, planet

• planet, planetary system, galaxy, universe

• universe, planet, galaxy, planetary system

• galaxy, universe, planetary system, planet