_________ is the only planet with a mean density less than water.

In the Kelvin scale, absolute zero lies at

Observations in the x-ray portion of the spectrum are not usually done from the surface of the earth.

Find the domain of the function:   Choose your answer below and be sure to show all of your work on your paper.

Changing the electric field will affect the magnetic field of a body.

Find the difference quotient for

The Sun’s blackbody curve peaks in the __________ portion of the spectrum.

All the planets revolve around the Sun in the same direction.

Find the limit. Note that an answer of DNE is not sufficient: If the limit does not exist, you must explain why, either by showing how the one-sided limits differ or by stating that the overall limit is

Today most scientists favor the capture theory of the Moon’s origin, since it would explain why the Moon still orbits in the ecliptic plane, as do other planets.