Dark Energy, Cosmology part 2

How old is the Universe?

• 13.82 million years

• 82.13 million years

• 13.82 billion years

• 82.13 billion years

Tags

NGSS.HS-ESS1-2

In the past, the entire Universe was a single, infinitely dense point that astronomers call ___

• iota

• the singularity

• the cosmic dot

• the inflection point

Tags

NGSS.HS-ESS1-2

On large scales, all the galaxies we see are moving away from each other as space ___

• curves around them

• remains static

• contracts between them

• expands between them

Tags

NGSS.HS-ESS1-2

On small scales, the expansion of the Universe is small enough that gravity ___

• is influenced by it

• is negligable

• can overcome it

• cannot overcome it

Tags

NGSS.HS-PS2-1

Type 1A supernovae occur when the mass of the white dwarf gets to about ___

• 0.14 times the mass of the Sun

• 1.4 times the mass of the Sun

• 14 times the mass of the Sun

• 140 times the mass of the Sun

Tags

NGSS.HS-ESS1-3

Astrophysical objects whose intrinsic brightness (luminosity) is known are called ___

• defined torches

• accepted emitters

• standard candles

• regulation lamps

In the 1990s, astronomers studying distant supernovae found that the expansion of the universe was ___

• indeterminable

• constant

• decelerating

• accelerating

Tags

NGSS.HS-ESS1-2

Measurements have shown that the expansion of the universe is like tossing a rock in the air and having it ___

• fall back down into your hand

• slow down only slightly

• hover in mid-air

• shoot upwards faster and faster

Tags

NGSS.HS-PS2-1

The Universe is expanding, and that expansion is ___

• getting faster every day

• getting slower every day

• randomly changing

• constant

Tags

NGSS.HS-ESS1-2

The unknown force or energy which tends to accelerate the expansion of the universe is called ___

• the faint force

• dark energy

• the shadow force

• black energy