14.2 - Stars change over their life cycles

How can stars be different from one another?

• Size

• Brightness

• Temerature

• All of the above

Why do stars look so small in the night sky?

• Because they are so tiny

• Because they are so far away from Earth

What is a lightyear in astronomy?

• The distance astronomers use to measure the distance between stars

• The distance light travels in a year

• A character from Toy Story

• An amount of time that passes

How far is a lightyear?

• about 1 million miles

• about 6 billion miles

• about 3 trillion miles

• about 6 trillion miles

How far away is the closest star to our solar system?

• 2 light years

• 3 light years

• 4 light years

• 5 light years

What is true about how stars appear to us on Earth?

• Some very bright stars are very far away from Earth and look fainter

• Some less bright stars may appear brighter because they are closer to Earth

• All stars are exactly the same brightness and distance from Earth

• All stars are different sizes, temperatures, brightness, and distances from Earth

What do astronomers use to measure the distance of other stars from Earth?

• A tape measure

• A ruler

• A space rocket

• Parallax

How much bigger is the Sun than Earth?

• About two times as big as Earth

• About half the size of Earth

• About 100 times bigger than Earth

• About 58 times bigger than Earth

Tags

NGSS.MS-ESS1-3

The giants star Betelgeuse is ______ light years away from Earth, and one of the _______ stars in the sky.

• 522 ; smallest

• 255 ; biggest

• 522 ; brightest

• 525 ; farthest

What is TRUE about white dwarf stars?

• They are small stars

• They can be as small as the size of Earth

• They cannot be seen without a telescope

• They are very large and hot

• They can be 100 times smaller than the Sun