8.8A - Components of the Universe - Science TX

Front

What is a black hole?

Back

A black hole is an extremely dense object with so much gravity that even light cannot escape.

Front

True or False: Bigger stars burn their fuel faster and have shorter life spans than smaller stars.

Back

True

Front

How many stars are typically found in a galaxy?

Back

Millions or billions.

Front

What is the definition of the Universe?

Back

All space and the matter that space contains.

Front

What type of galaxy is characterized by spiral arms?

Back

Spiral galaxy.

Front

What is the primary force that governs the motion of celestial bodies in the universe?

Back

Gravity.

Front

What is the life cycle of a star?

Back

A star goes through stages: nebula, main sequence, red giant, and then either a supernova or a white dwarf.

Front

What is the difference between a galaxy and a solar system?

Back

A galaxy is a massive system containing millions or billions of stars, while a solar system consists of a star and the celestial bodies that orbit it.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular.

Front

What is dark matter?

Back

Dark matter is a form of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.