A system of stars, gas, dust, and dark matter bound together by gravity is called -

• an asteroid

• a moon

• a galaxy

• a nebula

Tags

NGSS.MS-ESS1-2

Which of the following describes a nebula?

• A cloud of gas and dust where new stars form

• An oval-shaped cluster of densely packed stars

• An explosion at the end of a giant star’s life

• A star and all the planets that revolve around it

Elliptical, spiral, and irregular are all classifications of the overall shape of which of the following?

• stars

• galaxies

• nebulae

• comets

Tags

NGSS.MS-ESS1-2

In the diagram given, what happens as we move to the left?

• Stars Get Larger
• Stars get Colder
• Stars get hotter

Compared to the rest of the stars, our sun is considered...

• Extremely Large and Cold
• Small with a medium temperature
• Medium size with medium temperature

A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.

Why do other stars look much dimmer than the sun?

• The sun appear yellow, which is more visible than other colors.

• The sun is much closer to Earth than other stars are

• Other stars are made up of different gases than the sun is.

• As light from other stars travels through space, it gets reflected.

A _____ has gravity that is so strong that light cannot escape it.

• black hole
• black dwarf
• white dwarf
• neutron star

Tags

NGSS.HS-PS2-4

Which kind of galaxy has a large amount of gas and young stars?

• irregular galaxy
• spiral galaxy
• elliptical galaxy

Which kind of galaxy has a medium amount of gas and middle aged stars?

• irregular galaxy
• spiral galaxy
• elliptical galaxy

Which kind of galaxy has little gas and old stars?

• irregular galaxy
• spiral galaxy
• elliptical galaxy