Galaxies, Stars, and Gravity

What are the three main types of galaxies?

• barred galaxies, lenticular galaxies, and dwarf galaxies

• spiral galaxies, elliptical galaxies, and irregular galaxies

• supernova galaxies, quasar galaxies, and black hole galaxies

• starburst galaxies, ring galaxies, and polar ring galaxies

Which type of galaxy is our Milky Way?

• Irregular

• Spiral

• Lenticular

• Elliptical

What is the life cycle of a star?

• Formation, main sequence, red dwarf, planetary nebula, white dwarf

• Nebula, main sequence, red giant, planetary nebula, white dwarf

• Formation, main sequence, red giant, planetary nebula, white dwarf or supernova

• Formation, main sequence, red giant, black hole, white dwarf

What is the first stage in the life cycle of a star?

• Supernova

• Black hole

• Red giant

• Protostar

Tags

NGSS.HS-ESS1-1

What happens during the main sequence stage of a star's life cycle?

• The star expands and becomes a red giant.

• The star loses mass and becomes a white dwarf.

• Nuclear fusion occurs in the star's core, releasing energy and keeping the star stable.

• The star collapses under its own gravity, forming a black hole.

Tags

NGSS.HS-ESS1-1

What is a supernova?

• A supernova is a powerful and luminous stellar explosion.

• A rare type of flower found in the Amazon rainforest

• A planet with extreme weather conditions

• A type of black hole

Tags

NGSS.HS-ESS1-3

What is the force that holds galaxies together?

• friction

• magnetism

• electromagnetism

• gravity

Tags

NGSS.HS-PS2-4

What is the force that keeps planets in orbit around the Sun?

• centrifugal force

• magnetism

• gravity

• friction

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

What is the force that causes objects to fall towards the Earth?

• Friction

• Magnetism

• Gravity

• Inertia

Tags

NGSS.HS-PS2-4

What is the law of universal gravitation?

• The law of universal gravitation states that every point mass repels every other point mass by a force acting along the line intersecting both points.

• The law of universal gravitation states that every point mass attracts every other point mass by a force acting along the line intersecting both points.

• The law of universal gravitation only applies to objects on Earth.

• The law of universal gravitation only applies to objects in space.

Tags

NGSS.HS-PS2-4