Astronomy Test Review

Stars are born in nebulae. Which best describes a nebula?

• a collection of gas and dust

• a belt of asteroids

• a collection of older stars

• an empty space

The life cycle of a star is determined by:

• mass

• temperature

• color

• shape

Tags

NGSS.HS-ESS1-1

What element is found in all main sequence stars, which make up 90% of those in the universe?

• Hydrogen

• Lithium

• Iron

• Carbon

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Which 2 elements are the most abundant in the universe?

• Hydrogen & Oxygen

• Carbon & Oxygen

• Carbon & Iron

• Hydrogen & Helium

What two measurements are used to classify stars in an HR diagram?

• location & distance

• size & location

• brightness & distance

• temperature & brightness

To find brighter stars, what direction do you go on an HR diagram?

• up

• down

• left

• right

To find hotter stars, what direction do you go on an HR diagram?

• up

• down

• left

• right

To find dimmest stars, what direction do you go on an HR diagram?

• up

• down

• left

• right

To find coolest stars, what direction do you go on an HR diagram?

• up

• down

• left

• right

Which letter represents the waves with the shortest wavelength?

• W

• X

• Y

• Z

Tags

NGSS.HS-PS4-1