8.8A Components of the Universe - Progress

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

• an asteroid.

• a nebula.

• a galaxy.

• a moon.

Tags

NGSS.MS-ESS1-2

Stars are made mostly of which two elements?

• Selenium and sodium

• Astatine and arsenic

• Chlorine and cesium

• Hydrogen and helium

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

A large celestial body made of gases that emits light due to nuclear reactions is called -

• a galaxy.

• a nebula.

• a comet.

• a star.

An interstellar cloud of dust and gases that serves as a location for the formation of new stars is -

• a meteor.

• a planet.

• a galaxy.

• a nebula.

Galaxies are classified into all of the following types by their shapes EXCEPT -

• spiral.

• elliptical.

• lenticular.

• crescent.

The Hertzsprung-Russell diagram is provided, which is used for classifying stars based on the relationship between their brightness and their temperature and color. Regulus belongs in which of the following classifications?

• Super Giants

• Giants

• Main Sequence Stars

• White Dwarfs

Tags

NGSS.HS-ESS1-3

Which of the following is an accurate description of the relationship between components of the universe?

• Stars always contain galaxies.

• Galaxies contain many stars.

• Stars contain several nebulae.

• Nebulae contain many galaxies.

Tags

NGSS.MS-ESS1-2

A characteristic of a nebula is that it -

• is at the center of the solar system.

• is a region where stars are born.

• forms halfway through a star’s life cycle.

• has the coolest temperature in space.