the motion of a planet on its axis is called

a) rotation
b)revolution
c) shimmy
d) wobble
e) day

the answer i picked was a

Right.

thank ms sue :)

You're welcome, Babe.

The correct answer is indeed option (a) rotation.

To arrive at this answer, one needs to have a basic understanding of the terms related to the motion of celestial objects. Let me explain each option:

a) Rotation: This refers to the spinning motion of a celestial body, such as a planet, around its own axis. It determines the duration of day and night on the planet.

b) Revolution: This term refers to the motion of a celestial body, such as a planet, around another celestial body, typically an orbit around the Sun. It determines the planet's year or orbital period.

c) Shimmy: Unlike rotation or revolution, "shimmy" is not a scientifically recognized term related to the motion of planets. It is an irregular or jerking motion typically associated with vehicles, not celestial bodies.

d) Wobble: Although planets can experience a slight wobbling motion, it is not the term used to describe their primary motion on their axis.

e) Day: "Day" is a measurement of time and the period during which a planet completes one rotation on its axis. It is not the motion itself.

Considering the above explanations, the correct answer is indeed (a) rotation.