EAPS 105 ANSWERS AND QUESTIONS SET A+
✔✔What is a fusion crust on a meteorite?
A) A crust that results from the fusion of carbon atoms upon impact with the ground.
B) A crust that has two different minerals fused together.
C) A crust that glows due to heating while passing through the atmosphere.
D) A crust that melted due to heating while passing through the atmosphere. - ✔✔D) A
crust that melted due to heating while passing through the atmosphere.
✔✔What is an accretionary disc?
A) A molecular cloud that gives birth to stars
B) A disc of gas and dust that surrounds every new star
C) A nebula caused by a supernova
D) A nebula that gives off light - ✔✔B) A disc of gas and dust that surrounds every new
star
✔✔What is the difference between hydrogen ions and molecular hydrogen?
A) Hydrogen ions are cool and dark, while molecular hydrogen is hot and glows.
B) Hydrogen ions are cool and glow, while molecular hydrogen is hot and dark.
C) Hydrogen ions are hot and dark, while molecular hydrogen is cool and glows.
D) Hydrogen ions are hot and glow, while molecular hydrogen is cool and dark. - ✔✔D)
Hydrogen ions are hot and glow, while molecular hydrogen is cool and dark.
✔✔About what percent of the mass of our Solar System's planets is contained in
Jupiter?
A) 50.0%
B) 70.0%
C) 85.0%
D) 99.9% - ✔✔B) 70.0%
✔✔Why does nuclear fusion produce heat and light?
, A) Because high energy collisions are converted into energy.
B) From the breaking of nuclear bonds.
C) Because the products of fusion have less mass than the original components.
D) From radioactive decay of unstable isotopes. - ✔✔C) Because the products of fusion
have less mass than the original components.
✔✔What is the fate of the largest stars?
A) To collapse into a white dwarf and outgas its outer layers.
B) To collapse into a black hole and outgas its outer layers.
C) To collapse into a white dwarf and explode as a supernova.
D) To collapse into a black hole and explode as a supernova. - ✔✔D) To collapse into a
black hole and explode as a supernova.
✔✔How many times does the Moon rotate about its spin axis during each orbit around
the Earth?
A) 0 times
B) 1 time
C) 24 times
D) 28 times - ✔✔B) 1 time
✔✔True/False: In 100 million years our Moon will no longer make a perfect eclipse of
our Sun.
A) True
B) False - ✔✔A) True
✔✔Which element is not fused within a low-mass star like the Sun?
A) Helium
B) Carbon
C) Oxygen
D) Iron - ✔✔D) Iron
✔✔True/False: Most of the objects that you can see in the night sky with your naked
eye are galaxies.
A) True
B) False - ✔✔B) False
✔✔How is the chemistry of the Sun determined?
A) From its continuous spectrum
✔✔What is a fusion crust on a meteorite?
A) A crust that results from the fusion of carbon atoms upon impact with the ground.
B) A crust that has two different minerals fused together.
C) A crust that glows due to heating while passing through the atmosphere.
D) A crust that melted due to heating while passing through the atmosphere. - ✔✔D) A
crust that melted due to heating while passing through the atmosphere.
✔✔What is an accretionary disc?
A) A molecular cloud that gives birth to stars
B) A disc of gas and dust that surrounds every new star
C) A nebula caused by a supernova
D) A nebula that gives off light - ✔✔B) A disc of gas and dust that surrounds every new
star
✔✔What is the difference between hydrogen ions and molecular hydrogen?
A) Hydrogen ions are cool and dark, while molecular hydrogen is hot and glows.
B) Hydrogen ions are cool and glow, while molecular hydrogen is hot and dark.
C) Hydrogen ions are hot and dark, while molecular hydrogen is cool and glows.
D) Hydrogen ions are hot and glow, while molecular hydrogen is cool and dark. - ✔✔D)
Hydrogen ions are hot and glow, while molecular hydrogen is cool and dark.
✔✔About what percent of the mass of our Solar System's planets is contained in
Jupiter?
A) 50.0%
B) 70.0%
C) 85.0%
D) 99.9% - ✔✔B) 70.0%
✔✔Why does nuclear fusion produce heat and light?
, A) Because high energy collisions are converted into energy.
B) From the breaking of nuclear bonds.
C) Because the products of fusion have less mass than the original components.
D) From radioactive decay of unstable isotopes. - ✔✔C) Because the products of fusion
have less mass than the original components.
✔✔What is the fate of the largest stars?
A) To collapse into a white dwarf and outgas its outer layers.
B) To collapse into a black hole and outgas its outer layers.
C) To collapse into a white dwarf and explode as a supernova.
D) To collapse into a black hole and explode as a supernova. - ✔✔D) To collapse into a
black hole and explode as a supernova.
✔✔How many times does the Moon rotate about its spin axis during each orbit around
the Earth?
A) 0 times
B) 1 time
C) 24 times
D) 28 times - ✔✔B) 1 time
✔✔True/False: In 100 million years our Moon will no longer make a perfect eclipse of
our Sun.
A) True
B) False - ✔✔A) True
✔✔Which element is not fused within a low-mass star like the Sun?
A) Helium
B) Carbon
C) Oxygen
D) Iron - ✔✔D) Iron
✔✔True/False: Most of the objects that you can see in the night sky with your naked
eye are galaxies.
A) True
B) False - ✔✔B) False
✔✔How is the chemistry of the Sun determined?
A) From its continuous spectrum
