Physics: Universe Q&A
14 billion years ago - (CORRECT ANSWER)Almost _______, the Big Bang
happened.
not an explosion, but rather a rapid expansion of time and space - (CORRECT
ANSWER)If the Big Bang wasn't an explosion, what was it?
the fact that nearly all galaxies are moving away from us, with more distant ones
moving distant, helped us to conclude that - (CORRECT ANSWER)What helped us
conclude that the universe is expanding?
Hubble's Law - (CORRECT ANSWER)the farther away galaxies, the faster they
move
cosmic background radiation - (CORRECT ANSWER)radiation leftover from the big
bang
many scientists think the sun and the rest of the solar system formed from a giant
rotating cloud of gas and dust known as the solar nebula - (CORRECT
ANSWER)How do scientists think the sun and the rest of the solar system formed?
it spun faster and flattened into a disk - (CORRECT ANSWER)What happened as
the nebula collapsed because of its gravity?
form the sun - (CORRECT ANSWER)Most of the material was pulled toward the
center to ___________.
4.6 billion years ago - (CORRECT ANSWER)This occurred about _____________.
planetesimal - (CORRECT ANSWER)the asteroid-like bodies that formed the
building blocks of planets
the planetesimals collided and grew larger by sticking together, eventually combining
to form the planets - (CORRECT ANSWER)How did the planets form?
dark energy - (CORRECT ANSWER)a force that is causing the expansion of the
universe to accelerate
dark matter - (CORRECT ANSWER)matter that does not give off electromagnetic
radiation
they know the rate of expansion - (CORRECT ANSWER)How can scientist infer
approximately how long the universe has been expanding?
- universe will continue to expand as it is now
- force of gravity will pull the galaxies back together, resulting in a reverse Big Bang.
All of the matter will eventually be crushed into an enormous black hole -
14 billion years ago - (CORRECT ANSWER)Almost _______, the Big Bang
happened.
not an explosion, but rather a rapid expansion of time and space - (CORRECT
ANSWER)If the Big Bang wasn't an explosion, what was it?
the fact that nearly all galaxies are moving away from us, with more distant ones
moving distant, helped us to conclude that - (CORRECT ANSWER)What helped us
conclude that the universe is expanding?
Hubble's Law - (CORRECT ANSWER)the farther away galaxies, the faster they
move
cosmic background radiation - (CORRECT ANSWER)radiation leftover from the big
bang
many scientists think the sun and the rest of the solar system formed from a giant
rotating cloud of gas and dust known as the solar nebula - (CORRECT
ANSWER)How do scientists think the sun and the rest of the solar system formed?
it spun faster and flattened into a disk - (CORRECT ANSWER)What happened as
the nebula collapsed because of its gravity?
form the sun - (CORRECT ANSWER)Most of the material was pulled toward the
center to ___________.
4.6 billion years ago - (CORRECT ANSWER)This occurred about _____________.
planetesimal - (CORRECT ANSWER)the asteroid-like bodies that formed the
building blocks of planets
the planetesimals collided and grew larger by sticking together, eventually combining
to form the planets - (CORRECT ANSWER)How did the planets form?
dark energy - (CORRECT ANSWER)a force that is causing the expansion of the
universe to accelerate
dark matter - (CORRECT ANSWER)matter that does not give off electromagnetic
radiation
they know the rate of expansion - (CORRECT ANSWER)How can scientist infer
approximately how long the universe has been expanding?
- universe will continue to expand as it is now
- force of gravity will pull the galaxies back together, resulting in a reverse Big Bang.
All of the matter will eventually be crushed into an enormous black hole -
