Unit 3: Astronomy Review

What most likely developed first after the Big Bang due to gravitational attraction?

• a planet

• a comet

• a moon

• a star

Tags

NGSS.HS-ESS1-2

How did Cosmic Microwave Background (CMB) contribute to the big bang theory?

• CMB confirmed how matter expanded during the big bang.

• CMB was the magnetic field that was created during the big bang.

• Microwaves ALWAYS refer to thermal energy.

• CMB represented trails from moving matter that began with the big bang.

Tags

NGSS.HS-ESS1-2

According to the Big Bang Theory, which element formed first?

• carbon dioxide

• hydrogen

• oxygen

• nitrogen

Tags

NGSS.HS-ESS1-2

According to the Big Bang Theory, how is the universe changing?

• it is contracting

• it is expanding

• only the rim is expanding

• only the center is contracting

Tags

NGSS.HS-ESS1-2

Scientists observed the absorption spectra of distant galaxies and found they are moving away from Earth. What did they observe?

• a (red) shift toward longer wavelengths of light

• a (blue) shift toward shorter wavelengths of light

• the absence of wavelengths in the visible light range

• the compression of wavelengths in the visible light range

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

Scientists found that deuterium levels in Kuiper Belt comets are similar to Earth's oceans. This supports which theory?

• Earth's gravity affects deuterium decay like microgravity

• Comets formed from deuterium-based water stripped from early Earth

• Earth's ocean water came from Kuiper Belt comet impacts

• Kuiper Belt and Earth's oceans have similar evaporation rates

Tags

NGSS.HS-ESS1-6

What elements make up most of the mass of the planets outside the frost line?

• iron and nickel

• carbon and oxygen

• nitrogen and sulfur

• hydrogen and helium

Tags

NGSS.HS-PS1-1

Which information best helps determine if an object is a comet, an asteroid, or a meteoroid?

• the object's diameter

• the object's composition

• the shape of the object's orbit

• the speed at which the object travels

How are the elements that are heavier than helium but lighter than or equal to iron produced?

• Elements heavier than helium but lighter than or equal to iron were already in existence before the Big Bang.

• Elements heavier than helium but lighter than or equal to iron are produced when massive stars reach supernova stage and explode.

• All of the elements were produced during the initial collision of plasma particles before the stars existed.

• Elements heavier than helium but lighter than or equal to iron are produced by nuclear fusion within stars.

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

What is one difference between comets and the Moon?

• The Moon has a core of ice, while comet cores are solid rock.

• Comets have large orbits around the Sun, while the Moon orbits Earth.

• The Moon reflects light from the Sun, while comets generate their own light.

• Comets collect debris as they travel in space, while the Moon gives off meteoroids.