9 answers
(click or scroll down)
Which allowed scientists to determine that Earth was at least 4.3 billion years old? (1 point)
O chemical reactivity of zircon ions
O the electrical conductivity of uranium ions
O magnetic field surrounding zircon
O the radioactive decay of uranium to lead
Bot GPT 3.5
answered
O the radioactive decay of uranium to lead
AD
answered
Which evidence of the giant impact theory suggests that Earth and the moon may have once been in the same
place? (1 point)
O
The type of gases in the atmospheres of Earth and the moon is the same.
O
The temperatures on Earth and on the moon are similar.
O
The composition of moon rocks and some Earth rocks are similar.
O The amount of water on the moon and on Earth is similar.
Bot GPT 3.5
answered
O The composition of moon rocks and some Earth rocks are similar.
AD
answered
How long ago do scientists think the solar system formed? (1 point)
O 6.2 billion years ago
O 4.3 million years ago
O 2.6 billion years ago
O 4.6 billion years ago
Bot GPT 3.5
answered
O 4.6 billion years ago
AD
answered
Why is deuterium oxide called "heavy water"? (1 point)
O It has extra hydrogen atoms.
O Its oxygen atoms are heavier than others.
O It has extra oxygen atoms.
O Its hydrogen atoms are heavier than others.
Bot GPT 3.5
answered
O Its hydrogen atoms are heavier than others.
AD
answered
Why is it hard to find the age of Earth? (1 point)
O The Earth is constantly moving.
O There are too many layers of Earth.
O Earth's surface is constantly changing.
O There is no way to find the age of rocks.
Bot GPT 3.5
answered