Stars

What are the 5 properties of stars?

• Mass, size, distance, color, and dimension.

• Mass, size, brightness, temperature, and color.

• Size, dimension, distance, color, and temperature.

• Distance, brightness, color, mass, and size.

Is the following sentence true or false? The final stages of a star's life depend on it's mass.

• True

• False

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Which definition best explains Hubble's Law?

• As a star moves toward Earth, the lines in it's spectrum undergo a blue shift.

• The most distant galaxies that can be seen from Earth are moving away at more than 90% of the speed of light.

• The redshifts in the spectra of distant galaxies are proportional to their distance.

• As a star or galaxy circles the Earth. the lines appear to get bigger.

Tags

NGSS.HS-ESS1-2

Circle the letter of the sentences that gives the meaning of the observed red shift in the spectra of galaxies.

• The universe is contracting.

• The universe started with a loud noise.

• The universe is expanding.

• The universe will never change.

Tags

NGSS.HS-ESS1-2

Elements heavier than hydrogen and helium are formed through the process of nucleosynthesis which takes place-

• Around the edges of a black hole.

• During a supernova explosion.

• Every time a new star s formed.

• When a larger star becomes a white dwarf.

Tags

NGSS.HS-ESS1-3

Balanced outward pressure and inward gravity of a star's life is called.

• Supernova

• Nucleosynthesis

• Black hole

• Main sequence stage

Which statement about the elements hydrogen and helium are true and help support the Big Bang Theory?

• The relative proportions of these two elements are 75% hydrogen and 24.5% helium.

• Hydrogen and Helium are the first two elements that appear on the periodic table of elements.

• Hydrogen and Helium are the primary elements in the fusion that takes place within our sun.

• Hydrogen has fewer subatomic particles and is lighter than Helium.

Tags

NGSS.HS-ESS1-2

Which of the following describes the responsibility Main sequence star's have on helping to form many elements?

• Reactive molecules combine with oxygen in a combustion reaction.

• Isotopes of hydrogen fuse to form helium. releasing energy and neutrons.

• Energy is consumed to break heavy elements into hydrogen and helium.

• Subatomic particles are drown together by gravity, producing radioactive decay.

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

A high mass star's core temperatures are high enough to fuse to which element before it dies?

• Carbon

• Helium

• Oxygen

• Iron

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

True or False. The hottest temperatures are at the core or nucleus of stars, and the temperatures get cooler as the energy moves outward?

• True

• False

Tags

NGSS.HS-ESS1-1