Stars

Front

What is a dwarf planet?

Back

A dwarf planet is a celestial body that orbits the sun and is similar to a planet but does not clear its neighboring region of other objects. An example is Pluto.

Front

What process occurs in the core of a star to produce energy?

Back

Fusion is the process where hydrogen atoms combine to form helium, releasing energy in the process.

Front

What do all stars begin as?

Back

All stars begin as a nebula, which is a large cloud of gas and dust in space.

Front

What color are very hot stars?

Back

Very hot stars are blue in color.

Front

Which star has the lowest luminosity?

Back

Star D has the lowest luminosity.

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 life cycle of a star?

Back

The life cycle of a star includes stages: nebula, main sequence, red giant, and then either a white dwarf, neutron star, or black hole.

Front

What is luminosity?

Back

Luminosity is the total amount of energy emitted by a star per unit of time, often measured in watts.

Front

What is the difference between a star and a planet?

Back

A star generates its own light through nuclear fusion, while a planet reflects light from a star.

Front

What is a black hole?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.