What is a star?

• small,cool ball of Hydrogen

• Medium square form of gases

• huge hot bright ball of gases

• large bright ball of water

Tags

NGSS.HS-ESS1-3

When stars are different colors, we can conclude that they have different

• sizes.

• layers

• temperatures

• gases

What is a star made of?

• gases

• liquids

• solids

• gases and solids

Which one of the following statements is true about a star?

• A star’s outer layers are hot and thin

• A star’s outer layers are hot and dense.

• A star’s inner layers are cool and dense

• A star’s inner layers are hot and dense.

Some of the light that radiates from a star

• is absorbed by elements in a star’s atmosphere.

• is absorbed by the star’s inner layers.

• is absorbed by other stars

• is emitted through the universe.

How can scientists identify a star’s elements?

• by its color

• by its shape

• by its light

• by its age

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

When white light passes through a prism, it creates a band of color called a(n)

• wavelength.

• spectrum.

• emission line

• spectrograph.

A continuous spectrum is a spectrum that shows

• some of the colors

• some of the colors and some black lines.

• all the colors.

• all the colors and some black lines.

Tags

NGSS.HS-PS4-4

What instrument breaks a star’s light into a spectrum?

• a continuous spectrum

• a telescope

• a spectrometer

• a spectrograph

. What can scientists tell about a star from its spectrum?

• its composition

• its composition and temperature

• its age

• its age and temperature