Galaxies CFU

What is the meaning of 'unaided eyes'?

• without a telescope

• with glasses

• using binoculars

• with a microscope

What is the meaning of 'interstellar'?

• the region between stars

• a type of planet

• a kind of galaxy

• a space mission

What is a black hole?

• objects so massive, with a gravitational pull so strong that light cannot escape

• a type of star that emits bright light

• a planet with a thick atmosphere

• a comet made of ice and dust

What are neutron stars?

• small but incredibly massive objects made almost entirely of neutrons

• large, low-density clouds of hydrogen gas

• planets with extremely strong magnetic fields

• stars that are about to explode as supernovae

What are white dwarfs?

• compact star remnants with mass similar to the Sun, but size similar to Earth

• giant gas clouds that form new stars

• planets with icy surfaces and no atmosphere

• large black holes found at the center of galaxies

Tags

NGSS.HS-ESS1-3

What is a lightyear?

• the distance light travels in one Earth year, about 9.46 trillion kilometers

• the time it takes for the Earth to orbit the Sun

• the brightness of a star as seen from Earth

• the amount of energy produced by the Sun in one year

What is a galactic year?

• A galactic year is the time it takes for a star to complete one revolution around the center of its galaxy.

• A galactic year on Earth is about 225 to 250 million Earth years.

• A galactic year is approximately 1 million Earth years.
• A galactic year is the time it takes for the Earth to orbit the Sun once.

What is the name of the galaxy in which we live?

• Milky Way galaxy

• Andromeda galaxy

• Triangulum galaxy

• Whirlpool galaxy

Tags

NGSS.MS-ESS1-2

What is the name of the Milky Way’s central supermassive black hole?

• Sagittarius A*

• Andromeda X

• Cygnus X-1

• Vega Prime

Sir Isaac Newton’s famous quote, “If I have seen further, it is by standing upon the shoulders of giants” is referenced in the last section of this reading. The “giants” referenced in this quote are the scientists whose work helped Hubble “see” further in his discoveries. Who were these “giants”?

• Hawking and Tesla

• Planck and Sagan

• Curie and Levitt

• Levitt and Slipher