Earth’s gravity keeps the moon in orbit by pulling on it.
what does the moon’s gravity do?
a. pulls back on the earth
b. can only pull on smaller objects such as asteroids but has no effect on the earth
c. doesn´t affect anything
d. pushes the moon away from the earth

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to