8.8A Review

Front

What is the location of our solar system in the Milky Way galaxy?

Back

The solar system is within one of the outer spiral arms of the galaxy.

Front

What does the HR diagram represent?

Back

The HR diagram (Hertzsprung-Russell diagram) is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What are the stages of the sun's life cycle as a low mass main sequence star?

Back

Red Giant, Planetary Nebula, White Dwarf.

Front

What causes the seasons on Earth?

Back

The seasons are caused by Earth's tilt and its revolution around the sun.

Front

Which star is larger: the sun or Betelgeuse?

Back

Betelgeuse is larger than the sun.

Front

What is a main sequence star?

Back

A main sequence star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.

Front

What is a red giant?

Back

A red giant is a late stage in the life cycle of a star, characterized by a large size and a reddish color, occurring after the main sequence phase.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low or medium mass star after it has exhausted its nuclear fuel.

Front

What is the significance of hydrogen fusion in stars?

Back

Hydrogen fusion is the process that powers stars, converting hydrogen into helium and releasing energy in the form of light and heat.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object around its own axis, while revolution is the movement of an object around another object in an orbit.