ESSS1.1 Relative Brightness

Front

What is relative brightness?

Back

Relative brightness refers to how bright an object appears compared to another object when viewed from a specific distance.

Front

Why does the Sun appear brighter than distant stars?

Back

The Sun appears brighter than distant stars because it is much closer to Earth.

Front

What is the main factor that affects how bright a star appears from Earth?

Back

The distance of the star from Earth is the main factor affecting its apparent brightness.

Front

What is the relationship between distance and brightness?

Back

As the distance from a light source increases, its brightness appears to decrease.

Front

What does it mean if a star has a higher relative brightness?

Back

A star with higher relative brightness appears brighter than a star with lower relative brightness when viewed from the same distance.

Front

How can two stars shine the same amount of light but appear different in brightness?

Back

If two stars shine the same amount of light but are at different distances from Earth, the closer star will appear brighter.

Front

What is the significance of the Hubble Space Telescope in studying stars?

Back

The Hubble Space Telescope allows scientists to observe distant stars and gather data about their brightness and distance.

Front

What is the effect of a star's size on its brightness?

Back

A larger star can produce more light, but its apparent brightness also depends on its distance from Earth.

Front

What is the difference between absolute brightness and apparent brightness?

Back

Absolute brightness is the actual amount of light a star emits, while apparent brightness is how bright it appears from Earth.

Front

What can be concluded if a star appears dimmer than expected?

Back

If a star appears dimmer than expected, it may be farther away than other stars or have a lower absolute brightness.