Stars Lesson and Quiz

Stars Lesson and Quiz

Please take your time, read the slides and answer the questions. This is a grade.

​Star

​A star is a huge ball of hot gas.

​Sun

​The Sun is a star in the

​center of our solar

​system.

Fill in the Blank

A star is a huge ball of very hot _______

Multiple Choice

The Sun is a star.

• True

• False

​More about Stars

​Stars may be different sizes and colors.

​

​When seen from Earth, most stars appear as small points of light because they are very far away.

​Star Colors and Temps

• ​The color of a star tells us the temperature of the star.

• ​Red stars are the coolest.

• ​Yellow stars are hotter than red stars.

• ​White stars are hotter than red and yellow stars.

• ​Blue stars are the hottest of them all.

Multiple Choice

What color star is the coolest?

• Red

• Blue

• Yellow

• White

Multiple Choice

What color star is the hottest?

• Red

• Yellow

• White

• Blue

​Why are some Stars brighter than others?

• ​One reason a star can seem brighter than another star is due to how much power a star has - which can also be explained as the amount of wattage it has (think of light bulbs!). Stars with more power (or higher wattage) will shine brighter than those with less power (lower wattage).

​Wait, there's another reason!

​Another reason is the distance of the star from the Earth. Just because a star looks brighter, doesn’t mean it actually is brighter. The more distant an object is, the dimmer it appears. Therefore, if two stars have the same level of brightness, but one is farther away, the closer star will appear brighter than the more distant star - even though they are equally bright!

Open Ended

What are two reasons that one star can appear brighter than another star?

Multiple Choice

The actual amount of energy a star gives off is its...

• True brightness

• Apparent brightness

Multiple Choice

All stars are the same color and same size.

• Tr

• False