Ms. Xenos' Galaxies and Our Universe

A galaxy is made up of ...

• planets and moon that revolve around one star

• billions of stars, gas, and dust held together by gravity

• two stars that circle each other

• all of the stars in the universe

Tags

NGSS.MS-ESS1-2

Which of the following best describes the shape of an elliptical galaxy?

• irregular and chaotic

• flat with spiral arms

• perfectly circular with a bulge in the center

• oval-shaped without distinct features

Which galaxy type often contains young stars and are formed by leftover bits of colliding galaxies?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

• lenticular galaxy

Which statement is true about the distribution of galaxies in the universe?

• Elliptical galaxies are the least common type.

• Spiral galaxies are found only near the center of galaxy clusters.

• Irregular galaxies are often formed by the merging of spiral and elliptical galaxies.

• Elliptical galaxies are the most abundant type in the universe.

What is a light year commonly used to measure in astronomy?

• the brightness of stars

• the size of planets

• the distance between celestial objects

• the time it takes light to reach Earth

Choose three characteristics that describe the Milky Way galaxy. Select ALL that apply.

• contains 100,000 stars

• contains our Sun

• is a spiral galaxy

• is an elliptical galaxy

• has a rotating disk of stars

Which scientist was responsible for coining the phrase “Big Bang”?

• Fred Hoyle

• Albert Einstein

• Sir Isaac Newton

• Edward Hubble

Tags

NGSS.HS-ESS1-2

Why is the Big Bang theory considered a theory and not a hypothesis?

• because it has been proven true beyond all doubt

• because it is supported by a wide range of scientific evidence and observations

• because it was proposed by a famous scientist

• because it cannot be tested or falsified

Tags

NGSS.HS-ESS1-2

How does the abundance of hydrogen and helium in the universe support the Big Bang theory?

• These elements can only be created in the intense heat of a Big Bang.

• Hydrogen and helium prevent the formation of new stars.

• They are remnants of ancient stars that existed before the Big Bang.

• These elements are only found in galaxies far from Earth.

Tags

NGSS.HS-ESS1-2

Light emitted from a star or galaxy can be separated into a band of color called a ________________.

• redshift

• wavelength

• spectrum

• microwave

Tags

NGSS.HS-ESS1-2