Unit 5 Zone 2: Life Cycle of Stars Mastery Check

What is a star?

• A small amount of heavier elements made inside the star

• A clue to a star's temperature

• A composition of different elements in the form of gases

• A luminous object held together by its own gravity

What does the color of a star indicate?

• The star's distance from Earth

• The star's temperature

• The star's brightness

• The star's composition of different elements

Tags

NGSS.HS-PS4-3

What is the H-R Diagram?

• A graph showing the relationship between a star's color and its temperature

• A graph showing the relationship between a star's surface temperature and its absolute magnitude

• A graph showing the relationship between a star's distance from Earth and its brightness

• A graph showing the relationship between a star's size and its age

How do astronomers measure the distance to stars?

• By analyzing their composition

• By observing their brightness

• By using parallax

• By measuring their size

What happens during the red giant stage of a star?

• The star's core contracts and energy is radiated outward

• The star's outer shell increases hydrogen fusion

• The star's temperature decreases and it becomes cooler

• The star's size expands and it becomes hundreds to thousands of times larger

What happens to low mass stars at the end of their life cycle?

• They collapse into neutron stars

• They become black holes

• They turn into white dwarfs

• They explode in a supernova

What is a white dwarf?

• A star made up of hydrogen and helium

• A star that has exhausted all its nuclear fuel

• A star that emits beams of light and radio waves

• A collapsed star with extremely high density

What happens to high mass stars at the end of their life cycle?

• They become black holes

• They collapse into neutron stars

• They explode in a supernova

• They turn into white dwarfs

What is a supernova?

• A collapsed star with extremely high density

• A star that has exhausted all its nuclear fuel

• A star made up of hydrogen and helium

• A brilliant explosion of a high mass star

What is a black hole?

• A star that has exhausted all its nuclear fuel

• A star that emits beams of light and radio waves

• A star made up of hydrogen and helium

• A collapsed star with extremely high density