Bio 1500 -- Exam 1 (MIZZOU)
comprehensive Questions and Answers
with Verified Solutions
Question 1:
When was the Universe formed by a big bang?
Answer:
13.7 billion years ago
Question 2:
When did the solar system (Sun and Earth) appear? -- Actual history on
Earth started
Answer:
4.6 billion years ago
Question 3:
When Earth first appeared it was a big ball of molten rock. How long did it
take for Earth to cool down enough to have solid rocks around?
Answer:
100 million years
Question 4:
When was the Moon formed?
Answer:
4.5 billion years ago
, Question 5:
How did the Moon form?
Answer:
Happened very likely due to a collision with young Earth and another
body (about the size of mars) -- this caused a lot of material to be
knocked out of Earth and then eventually that material transformed into
the Moon over several tons of millions of years.
Question 6:
What happened on Earth when it collided with another body (that
Answer:
The energy that was put into Earth due to the collision of Earth and the
other body resulted in everything melting again (probably a magma
covered ocean all around Earth) and then the cooling down process
happened again.
Question 7:
When were the oldest rocks formed?
Answer:
About 3.8 to 4.0 billion years ago After the Earth cooled down enough for
the curst of the Earth to have solidified
Question 8:
When were the oldest fossils (signs of life) discovered?
Answer:
3.5 to 3.8 billion years ago
comprehensive Questions and Answers
with Verified Solutions
Question 1:
When was the Universe formed by a big bang?
Answer:
13.7 billion years ago
Question 2:
When did the solar system (Sun and Earth) appear? -- Actual history on
Earth started
Answer:
4.6 billion years ago
Question 3:
When Earth first appeared it was a big ball of molten rock. How long did it
take for Earth to cool down enough to have solid rocks around?
Answer:
100 million years
Question 4:
When was the Moon formed?
Answer:
4.5 billion years ago
, Question 5:
How did the Moon form?
Answer:
Happened very likely due to a collision with young Earth and another
body (about the size of mars) -- this caused a lot of material to be
knocked out of Earth and then eventually that material transformed into
the Moon over several tons of millions of years.
Question 6:
What happened on Earth when it collided with another body (that
Answer:
The energy that was put into Earth due to the collision of Earth and the
other body resulted in everything melting again (probably a magma
covered ocean all around Earth) and then the cooling down process
happened again.
Question 7:
When were the oldest rocks formed?
Answer:
About 3.8 to 4.0 billion years ago After the Earth cooled down enough for
the curst of the Earth to have solidified
Question 8:
When were the oldest fossils (signs of life) discovered?
Answer:
3.5 to 3.8 billion years ago
