The Universe - 8th Grade

Front

What does the Big Bang Theory state?

Back

The Big Bang Theory states that billions of years ago, a small singularity suddenly started expanding in all directions, releasing a lot of energy. The universe is still expanding today.

Front

What type of galaxy is elongated and oval-shaped?

Back

Elliptical galaxy.

Front

What is one possible end state of a large mass star?

Back

A large mass star can end up as a Black Hole.

Front

Which star is most likely the Sun based on the Hertzsprung-Russell diagram?

Back

Star 3.

Front

What is a rocky object that orbits the Sun and is left over from the formation of our solar system?

Back

Asteroid.

Front

What is the definition of a comet?

Back

A comet is an icy body that, when close to the Sun, heats up and begins to release gases, forming a glowing coma and sometimes a tail.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

Front

What is the difference between a meteoroid and a meteor?

Back

A meteoroid is a small rocky or metallic body in outer space, while a meteor is the streak of light produced when a meteoroid enters the Earth's atmosphere.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle.

Front

What is the main component of the universe?

Back

The main component of the universe is dark energy, which makes up about 68% of the universe.