REVIEW Earth’s Place in the Universe CP F25

According to the Big Bang Theory, approximately how old is the universe?

• 13.6 million years old

• 1300 years old

• 13.6 billion years old

• 4.6 million years old

Tags

NGSS.HS-ESS1-2

The Big Bang Theory suggests that the universe has been changing since the initial explosion/expansion and still continues to change. What are the two main ways the universe has changed since the Big Bang:

• a. The universe continues to expand.

• b. The temperature of the universe is decreasing.

• c. The universe continues to get more dense.

• Both a and b.

Tags

NGSS.HS-ESS1-2

Cosmic background radiation is a remnant from the beginning of the universe and provides evidence of the ______________ and ____________________

• Big Bang; universal expansion

• Cosmic Inflation; temperature increase

• Nebular Theory; cosmic inflation

• Big Bang; Dark Energy

Tags

NGSS.HS-ESS1-2

The life cycle of a star is determined by its initial_______________.

• Supernova

• Temperature

• Mass
• Color

When thermonuclear fusion (nuclear fusion) begins in a star, energy and light is created. Which equation best represents the FIRST processes of thermonuclear fusion?

• H + He → He + water

• H + H → He + energy

• Li + O → Si + oxygen

• None of the above

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Nuclear fusion usually occurs in which layer of a star?

• Photosphere

• Corona

• Radiative zone

• Inner core

Tags

NGSS.HS-ESS1-1

The Hertzsprung-Russell (H-R) Diagram is a tool astronomers use to classify stars. The H-R Diagram classifies stars based on a star’s ________ and ________.

• Mass and size

• Color and composition

• Brightness and luminosity

• Temperature and luminosity

What is the relationship between temperature and luminosity for all main sequence stars?

• As temperature increases, luminosity decreases.

• As temperature increases, luminosity increases.

• As temperature decreases, luminosity decreases.

• There is a cyclical relationship between luminosity and temperature.

Our sun is classified as a __________________ star; after all the hydrogen is used up in nuclear fusion, our sun will become a ___________________.

• Main sequence; red giant
• White dwarf; supernova
• Main sequence; black hole

• Supergiant; main sequence

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Which star has the following characteristics: Temperature of ~4000ºC and luminosity of ~100.

• Barnard’s Star

• Polaris

• Rigel

• Aldebaran

Tags

NGSS.HS-ESS1-3