12-5 Origins of the Universe

What is the big bang theory?

• A theory that states that the universe started in a large mass and then imploded to form everything.

• A theory that states that the universe was there, will be and is there. Is homogeneous and isotropic.

• A theory that states that the universe is slowly coming back to a center.

• A theory that states that the universe started in a small mass and then expanded, the expansion cooled down the temperature and that resulted in the formation of matter, energy, space and time.

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NGSS.HS-ESS1-2

The red-shift in the spectral lines of light, reaching us from other galaxies implies that these galaxies ____________.

• Are moving closer to one another

• Are moving farther apart from one another

• Are in rapid rotation

• Redshift doesn´t exist

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NGSS.HS-ESS1-2

The term big bang refers to _______________.

• The origin of the universe

• The ultimate fate of the universe

• A supernova explosion

• The formation of a quasar

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NGSS.HS-ESS1-2

If a star and the earth are moving away from each other, the star's light appears redder → Blue shift

• True

• False

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NGSS.HS-ESS1-2

NGSS.HS-PS4-3

What is unit of length equal to the distance that light travels through space in one year.

• light year

• speed of light

• galaxy

• solar mass

Tags

NGSS.MS-ESS1-3

According to the big bang theory, the universe began as an explosion and is still expanding. This theory is supported by observations that the stellar spectra of distant galaxies show a - (hint: which one is moving away?)

• a shift toward the red end of the spectrum

• a shift toward the blue end of the spectrum

• a shift toward the yellow end of the spectrum

• a shift toward the white end of the spectrum

Tags

NGSS.HS-ESS1-2

In which list are celestial features correctly shown in order of increasing size?

• solar system -- galaxy -- planet -- universe

• galaxy -- solar system -- universe -- planet

• universe -- galaxy -- solar system -- planet

• planet -- solar system -- galaxy -- universe

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NGSS.MS-ESS1-3

As part of the Big Bang Theory of the formation of the universe, scientists believe that over time, the universe is continually changing in what characteristic?

• From more dense to less dense

• From rotating to stationary

• From cooler to hotter

• From very large to very small

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NGSS.HS-ESS1-2

All the stars we observe from Earth emit light that is shifted, to varying degrees, to longer wavelengths. This evidence is used to support the Big Bang Theory because it shows that stars we observe -

• are all older than our Sun.

• are made up of helium gas.

• use nuclear fusion to make light.

• are moving away from us.

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NGSS.HS-ESS1-2

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