[ASTRO] Unit 4 Review

Radio waves and visible light are both types of EM radiation. What about them is the same?

• Speed

• Wavelength

• Frequency

• Energy

Tags

NGSS.HS-PS4-1

As the frequency of EM radiation increases, what happens to the wavelength?

• Increases

• Stays the same

• Decreases

• Not enough information to tell

Tags

NGSS.HS-PS4-1

Which color of visible light has the shortest wavelength?

• Red

• Green

• Blue

• Violet

Tags

NGSS.HS-PS4-1

All objects naturally give off EM radiation. What does the radiation of colder objects look like?

• Redder and dimmer

• Redder and brighter

• Bluer and dimmer

• Bluer and brighter

Tags

NGSS.HS-PS4-3

The hottest stars are always...

• Blue

• Large

• Bright

• Visible

Hydrogen has 4 absorption lines and helium has 6 absorption lines. If a star has ONLY hydrogen and helium in its spectrum, how many spectral lines would it have?

• 2

• 4

• 6

• 10

The temperature of a star determines its ________.

• Color

• Luminosity

• Type

• Size

Which property would cause a star to have thinner absorption lines?

• Larger size

• Moving towards Earth

• Rotating

• Only one gas in atmosphere

Which property would cause a star to have thicker absorption lines?

• Smaller size

• Moving away from Earth

• Rotation

• Multiple gases in atmosphere

All of a star's absorption lines are more blue than we would expect. What does that tell us about the star?

• The star is hotter than it should be.

• The star is cooler than it should be.

• The star is moving towards Earth.

• The star is moving away from Earth.

Tags

NGSS.HS-PS4-3