Stars Luminosity

In comparison to other stars in the sky, the Sun appears brighter because it is–

• Bigger

• Smaller

• Nearer

• Further

A student notices that the moon looks larger than the stars.  Why?

• The moon is reflecting light from the sun
• The moon is closer to Earth then the stars
• The moon is much larger than the stars
• The moon is much larger than Earth

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

The color of a star depends on its

• size
• temperature
• shape
• magnitude

Put the stars in order from coolest to hottest.

• Blue, White, Yellow, Orange, Red
• Red, Orange, Yellow, White, Blue
• Red, Orange, Yellow, Blue, White
• Red, Yellow, Orange, White, Blue

Tags

NGSS.HS-ESS1-3

What color of star is the coolest?

• Red
• Yellow
• Blue
• White

Tags

NGSS.HS-ESS1-3

Which property of a star is the brightness of a star at a standard distance?

• Apparent (magnitude) brightness
• Absolute (magnitude) brightness
• Luminosity
• Size of the star

The brightness of a star as seen from Earth is its 

• apparent brightness.
• absolute brightness.
• parallax.
• reflective brightness.

A very bright star can seem to be dimmer because it is 

• further away
• cooler in temperature
• very close
• batteries are dying

As the _________ of a star increases, luminosity increases.

• size

• distance

• age

• composition

The luminosity of a star describes its ______________.

• brightness

• temperature

• age

• color