EAPS 105: Asynchronous Quiz 1

Quiz 1: Unit 1. Part 1. Question 1. Watch the Unit 1 Part 1 lecture video and answer the following question: True/False: If you add up all the mass of all the planets, moons, asteroids, comets, and everything else in our solar system (except the Sun), it would contain less than 1% of the mass of the Sun.

A) True

B) False

A) True

Quiz 1: Unit 1. Part 1. Question 2. Watch the Unit 1 Part 1 lecture video and answer the following question: What is an astronomical unit (AU)?

A) The time it takes late to travel from the Sun to the Earth

B) The distance from the Sun to the Earth

C) The mass of the Sun

D) The distance that light travels in one second

B) The distance from the Sun to the Earth

Quiz 1: Unit 1. Part 1. Question 3. Watch the Unit 1 Part 1 lecture video and answer the following question: True/False: In millions of years, our Moon will no longer be at the right distance from Earth to form a perfect solar eclipse.

A) True

B) False

A) True

Quiz 1: Unit 1. Part 1. Question 4. Watch the Unit 1 Part 1 lecture video and answer the following question: True/False: The most distant objects to orbit the Sun (the farthest reaches of the Oort Cloud) are one quarter the way to the nearest star.

A) True

B) False

A) True

Quiz 1: Unit 1. Part 1. Question 5. Watch the Unit 1 Part 1 lecture video and answer the following question: True/False: When you look up in the night sky with your naked eye (no telescope), almost everything you see are stars in our own galaxy.

A) True

B) False

A) True

Quiz 1: Unit 1. Part 2. Question 6. Watch the Unit 1 Part 2 lecture video and answer the following question: Which of the following is correct regarding hydrogen?

A) Hydrogen ions have no electrons and emit light.

B) Hydrogen ions combine two hydrogen items.

C) Hydrogen ions are relatively cool in temperature.

D) Hydrogen ions do not emit light.

A) Hydrogen ions have no electrons and emit light.

Quiz 1: Unit 1. Part 2. Question 7. Watch the Unit 1 Part 2 lecture video and answer the following question: After the Big Bang, what did hydrogen atoms fuse into?

A) molecular hydrogen

B) helium

C) carbon

D) oxygen

B) helium

Quiz 1: Unit 1. Part 2. Question 8. Watch the Unit 1 Part 1 lecture video and answer the following question: Why does fusion produce heat?

A) Because an increase in mass causes an increase in energy.

B) Because a decrease in mass causes an increase in energy.

C) Because an increase in mass causes a decrease in energy.

D) Because a decrease in mass causes a decrease in energy.

B) Because a decrease in mass causes an increase in energy.

Quiz 1: Unit 1. Part 2. Question 9. Watch the Unit 1 Part 2 lecture video and answer the following question: Which of the following is correct regarding molecular hydrogen?

A) Molecular hydrogen have no electrons.

B) Molecular hydrogen combines two hydrogen atoms.

C) Molecular hydrogen is relatively hot in temperature.

D) Molecular hydrogen emit lights.

B) Molecular hydrogen combines two hydrogen atoms.

Quiz 1: Unit 1. Part 2. Question 10. Watch the Unit 1 Part 2 lecture video and answer the following question: If the universe is 13.8 billion years old, how large is the universe?

A) Less than 13.8 x 2 billion lightyears across

B) Exactly 13.8 x 2 billion lightyears across

C) More than 13.8 x 2 billion lightyears across

C) More than 13.8 x 2 billion lightyears across