Semester 1 Review

Front

What is a substance that tastes bitter?

Back

A base.

Front

Which type of electromagnetic wave has a frequency greater than ultraviolet waves?

Back

X-Rays.

Front

What is a main sequence star?

Back

A star that is in the stable phase of its lifecycle, fusing hydrogen into helium in its core. Example: Vega.

Front

What happens to a low mass star after the main sequence?

Back

It becomes a red giant.

Front

What is a substance that is corrosive to metals?

Back

An acid.

Front

Define an acid.

Back

A substance that donates protons (H+) in a solution and has a sour taste.

Front

Define a base.

Back

A substance that accepts protons (H+) in a solution and has a bitter taste.

Front

What is the electromagnetic spectrum?

Back

The range of all types of electromagnetic radiation, from radio waves to gamma rays.

Front

What is a red giant?

Back

A late stage in the life cycle of a star where it expands and cools after exhausting hydrogen in its core.

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.