Which evidence of the giant impact theory suggests that Earth and the moon may have once been in the same place?(1 point)
Responses
The type of gases in the atmospheres of Earth and the moon is the same.
The type of gases in the atmospheres of Earth and the moon is the same.
The temperatures on Earth and on the moon are similar.
The temperatures on Earth and on the moon are similar.
The composition of moon rocks and some Earth rocks are similar.
The composition of moon rocks and some Earth rocks are similar.
The amount of water on the moon and on Earth is similar.
The composition of moon rocks and some Earth rocks are similar.
Why is deuterium oxide called “heavy water”?(1 point)
Responses
Its oxygen atoms are heavier than others.
Its oxygen atoms are heavier than others.
It has extra hydrogen atoms.
It has extra hydrogen atoms.
It has extra oxygen atoms.
It has extra oxygen atoms.
Its hydrogen atoms are heavier than others.
Its hydrogen atoms are heavier than others.
Why is it hard to find the age of Earth?(1 point)
Responses
There is no way to find the age of rocks.
There is no way to find the age of rocks.
There are too many layers of Earth.
There are too many layers of Earth.
Earth's surface is constantly changing.
Earth's surface is constantly changing.
The Earth is constantly moving.