Mrs. Kim's Properties of Stars

Front

What is apparent magnitude in relation to stars?

Back

Apparent magnitude is a measure of how bright a star appears from Earth, which depends on its distance from Earth.

Front

What is absolute brightness of a star?

Back

Absolute brightness is the actual brightness of a star, measured as if it were at a standard distance of 10 parsecs from Earth.

Front

What process generates energy in the sun?

Back

The energy from the sun is created by nuclear fusion, where hydrogen atoms combine to form helium, releasing energy.

Front

Why do some stars appear smaller than the sun?

Back

Other stars appear smaller than the sun because they are much farther away from Earth.

Front

What is the relationship between a star's color and its temperature?

Back

A star's color indicates its temperature; hotter stars appear blue or white, while cooler stars appear red or orange.

Front

What is the significance of a star's distance from Earth?

Back

The distance of a star from Earth affects its apparent magnitude and how bright it appears in the night sky.

Front

What is the difference between apparent magnitude and absolute brightness?

Back

Apparent magnitude is how bright a star appears from Earth, while absolute brightness is how bright it actually is at a standard distance.

Front

What are the main types of stars based on their temperature?

Back

Stars are classified into types such as O (hot), B, A, F, G (like the Sun), K, and M (cool).

Front

What is a light-year?

Back

A light-year is the distance that light travels in one year, used to measure astronomical distances.

Front

What is a supernova?

Back

A supernova is a powerful explosion that occurs at the end of a star's life cycle, often resulting in the star's destruction.