Untitled Presentation

Open Ended

What is the significance of the Big Bang in the context of the formation and evolution of the universe?

Multiple Choice

Which of the following best describes a galaxy?

• A gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter

• A single star with its planets

• A cloud of gas and dust only

• A comet orbiting the sun

Open Ended

Explain how the Doppler effect helps astronomers determine whether a star or galaxy is moving towards or away from Earth.

Multiple Choice

Which of the following best describes the difference between terrestrial (rocky) planets and gas giants in our solar system?

• Terrestrial planets are composed mainly of rock and metal, while gas giants are composed mainly of hydrogen and helium.

• Terrestrial planets have rings, while gas giants do not.

• Gas giants are closer to the Sun than terrestrial planets.

• Terrestrial planets have more moons than gas giants.

Fill in the Blank

The astronomical unit (AU) is defined as the average distance between the Earth and the ___.

Multiple Select

Which of the following statements about the Moon are correct?

• The Moon is Earth's only natural satellite.

• The Moon always shows the same face to Earth.

• The Moon has been visited by 12 astronauts.

• The Moon's orbit causes both solar and lunar eclipses.

Fill in the Blank

The center of the Milky Way galaxy is known as ___

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Open Ended

Summarize how the structure of the observable universe is organized, starting from the local group up to the largest known structures.