Space and Technology

The Big Bang theory of the formation and expansion of the universe is supported by the observed ____.

• blue-violet shift

• red shift

• "big crunch"

• shorter light waves

Tags

NGSS.HS-ESS1-2

From the cosmic background radiation, scientists can infer that, just after the big bang, the universe must have been

• very small

• hot

• the same average temperature as it is today

• cooler than it is today

Tags

NGSS.HS-ESS1-2

A red shift in the spectrum of the light from an object indicates the object is moving ____ you.

• away from

• toward

• at a right angle from

• none of the above

Tags

NGSS.HS-ESS1-2

What is likely to happen to the universe in the future? It will

• contract

• remain the same size

• expand forever

• expand and then contract

Evidence that the universe is expanding is best supported by the observation that the wavelengths of light from distant galaxies are shifted toward the

• red end of the spectrum because they are shortened.

• red end of the spectrum because they are lengthened.

• blue end of the spectrum because they are shortened.

• blue end of the spectrum because they are lengthened.

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

The force that tends to pull together the matter in stars is

• gravity

• nuclear fusion

• dark energy

• dark matter

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A star begins as a ____, a large cloud of gas and dust

• nedula

• giant

• dwarf

• black hole

Our Sun is NOT ____.

• a part of a binary system

• a main sequence star

• in a galaxy

• a medium hot star

The process by which nuclei having low masses are united to form nuclei with larger masses is ____.

• a chain reaction

• a chemical reaction

• nuclear fission

• nuclear fusion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Which of the following elements is most likely to be produced during a nuclear fusion reaction in the Sun?

• Helium-4

• Hydrogen-1

• Uranium-235

• Uranium-238

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1